Here we have Sans Souci Studios' armatures and Best Boys, Arnold Full Armature and Arnold "Han Solo" Half Armature. (Seriously, his name is Arnold. That's the name of the person from whom this was live-cast.) Other than being a handy place to put clay while sculpting, Arnold provides valuable points of reference. Especially Half Arnold. While building a sculpt on Full Arnold is a good way of seeing what a sculpt will look like in motion on a real wearer, Half Arnold provides a perfectly flat plane from which to build a system of reference points and angles. Invaluable, as otherwise reference points have a maddening way of seeming to shift on a 3D sculpture.

Above, finding the center of the sculpt, and making sure it's at a 90 degree angle to the armature back. I measure to find the center of the armature, mark the line on both the top and bottom of the head, and trace the center line around the sculpt, as shown above. At any point where the sculpt doesn't meet the armature back (here, at the throat)  I mark the center on masking tape and then extend a line up the tape onto the sculpt. I use various measuring tools to keep the line as perpendicular as possible to the armature back, but there's always a certain amount of eyeballing and guesswork involved.

Above, creating a "template" of sorts for the back of the sculpt, to help ensure its symmetry. First, I lay down that good old patterning material, duck tape over aluminum foil, on the armature base under the sculpt in progress. Then I trace on the tape along the edge of the sculpt, mark and fold it at the halfway mark, and trim so that the two sides of the template are symmetrical.  Then I lay the template back down on the armature and clay up the back edge of the mask along it. There's still a certain amount of eyeballing and guesswork involved, as the template can shift and stretch, and little bits of clay on the armature can put it out of whack. But still, it makes a pretty good guide.

Now I have a sculpt with a symmetrical back and a centered and perpendicular nose. Getting the sides of the sculpt to match is a lot trickier. Each side can cave in, bow out, or do some evil combination of those things in its own special way. The back template can help  address this by placing "landmarks" on the sides, to make specific areas on the sides easier to compare. For example, I can mark where the cut out is for the lower jaw on one side of the template, then fold the template, mark the same spot for the jaw cutout on the other side, then transfer the mark into the clay. 

Once I've placed the landmarks I can make a gizmo to compare the angles at specific points of each side of the head. Here, I have cut out a little piece from a cereal box, preserving one original corner so that I have a handy 90 degree angle for reference. Then I carefully cut a thin slot into the sculpt, press one edge of the box in, and trace along the side of the sculpt to get the angle of that specific spot, making sure one side of the 90 degree angle is flat on the armature back. I trim along the line I've traced and then compare the angle of my gizmo to the angle of the sculpt on the other side, again being careful to line up one side of my 90 degree angle with the armature back. Then I adjust the sculpt as needed. I don't have too long to play with the gizmo though, as being made out of thin cardboard the edges start squishing down and losing their shape fairly quickly.

And here we have my Glorious Goggles, my Reference Point Piece de Resistance. The goggles will help ensure that the eyes will be equidistant from the center line of the head, lie along a line that is at right angles to the center line of the head, and are both set back the same distance into the head. They will also help ensure that the eye bed I sculpt on my head will be parallel to the back of the mask and not tipped forward or back. Plus, if I'm fairly certain that my eye placement is accurate and even, I can use the eyes themselves as further reference points for sculpting the head.

How I made the Glorious Goggles. I've traced the backs of correctly sized eye cabochons onto a piece of thin craft plastic and cut the circles out. I've measured the distance between the eyes on my original resin head, cut down a disposable chopstick I got from Chinese takeout to that length, and carefully hot glued the plastic circles on the ends, lining up the outside edges of the circles with the ends of the chopstick. Then I marked the center of my contraption with a Sharpie. Next, I measured the distance from the armature back to a point a little bit in front of its eyes and cut two more pieces of chopstick to that length, thus making the "arms" of my goggles. I hot glued them on as well, taking care to hold the arms at more or less at a right angle to the front of the goggles until the glue cools. 

Above, beginning to set the glasses into the sculpt. I've started carving out holes into which to insert the arms of the glasses. These holes need to be pretty roomy so they don't force the arms out of their proper alignment. 

Adding a slot to the sculpt, into which I'll set the bridge of the glasses. I insert a skewer through the bridge of the sculpt's nose at the inside corner of each eye, keeping the skewer as perpendicular to the center line as I can. Then I cut a slot into the sculpt by pulling up on the skewer and removing clay along its path as needed with clay tools. 

Above, the glasses have been added. Now just to fill the clay back in around them. It's already easy to see adjustments I need to make to the cheeks and brows, with the right hand brow being raised higher and there being more material on the outside edge of the right eye. 

And, here we have the goggles completely clayed over, with a pair of acrylic eye cabochons resting on top of them, and a more developed sculpt in general. I'm happy to have this pretty solid point of reference in the sculpt, though it also makes me think how sculpting software makes symmetry so effortless!

It all started with these pictures, my favorite reference pics out of stacks and stacks of pics for dog feet. The pic of the tan dog foot is especially useful as it's relatively easy to see the bony structure underneath the skin.

Using my handy dandy Artograph projector, I enlarged tracings of these two pictures, one for the bottom of the paw and one for the top, to the size I wanted my finished handpaw to be. These would be my "master patterns" and I would use them to trace out smaller parts of the pattern....

....like so Here are patterns for individual toes and pads, traced from the "master patterns" using the light table and cut out.

I had actually started using these patterns before I started the clay feet I blogged about earlier, but I then I hit a snag and at the time couldn't figure out how to get around it.  

Yuck. This looks more like a hoof than a paw. There's the question, what to do with the space between the fingers? How to make this work as a glove? The fingers here are all separate pieces but they're all attached to a one piece underside. How would the fingers move?  (I could figure this out now, but this doesn't change the fact this paw is just plain old ugly.)

That's when I switched over to making and taking patterns from the clay feet, coming up with this "tubular" style of toes in the process. Here we have our friend the foam foot from my previous post, made from the enlarged and refined clay foot pattern, along with a selection of unattached toes and toebeans, showing off their tubular style. 

But then, as it so often happens, just as I was ready to tweak the sizing a little bit and then call it done, I got very excited about how cool the palmar pad for this foot looked, carefully carved and patterned the way it was. Then I got the itch to do the fingers that way too. I could carve knuckles! And tendons! How cool would that be??

 Here, the foam foot with the original tubular toes torn off and replaced with carved toes. The potential  is clear, but at least for me, carving each toe out of a single piece of foam made it easy for proportions and proper placement of various parts to get out of whack.

​I decided to try out a combination of carving, using the "tubular toes", and tracing and cutting out parts from my original patterns, thus coming up with this most recent foam foot. Here's a little demonstration of my method, making a random toe.

 First, using the patterns pictured at the beginning of this post and a sheet of 1/2" thick foam, I traced and cut out out two finger pieces and one knuckle piece and glued them into a stack. I inserted a claw shaped piece of cosplay foam in the end of the finger to mark the placement of the nail. I then used a pattern piece from my previous foam foot attempt and glued it underneath my finger/knuckle stack for the "tube", leaving an opening for the toebean. I then started to give the whole thing a little shape with scissors and an Exacto knife.  

Next, toebeans. Using my patterns again, I traced and cut out toebeans from the cosplay foam and some  1" thick sheet foam. I glued the cosplay foam into the end of the "tube", being careful to check my reference pics to get it aligned correctly and  at the proper angle inside the toe. (Be sure to line up the tip of the toebean wth the claw!) I then  glued the 1" foam toeabean in, using the cosplay foam toebean as a base.  Using a Sharpie, I sketched out the side of the toebean on the 1" foam and gave it some shape with my scissors and Exacto knife.   

Now, to  give the top of the toe a little bit more of a curve. Again I used my patterns to trace out just the half of the knuckle nearest the claw, and just the part of the finger underneath the knuckle. I tapered both pieces with the Exacto knife so they would be thickest around the knuckle and thinnest towards either end of the finger, and glued them into the appropriate spots on the "stack". Then I shaped them a little with my scissors and Exacto knife. 

​Using the patterns like this takes a lot of the guesswork out of the placement of the different parts, such as knuckles and toebeans.

The outline of the knuckle was getting a little  lost with all the layering and trimming, so I made the outline clearer by curving a thin piece of foam around it, gluing the foam down, and trimming the top a little to blend it in.   

Now to give the underside of the toe a little bit more of a curve. (I'm sorry but that first picture looks really rude!) With a Sharpie, I marked where I wanted the curve to be, cut a slit along that line, pulled one edge of the slit under the other and glued it down.  A curve, tada!

And here, our finished demonstration toe. I continued to refine the toes on the handpaw adding little pieces of foam and carving them down to get them just right, but this toe does get the basic process across. 

Now to start taping this foam foot and making the pattern for a fabric foot! So excited!

I continue on my quest to make a handpaw pattern using Matrices' tutorial, in which a small clay model is made, a pattern is taken from the model, and the pattern is enlarged to the proper size with an overhead projector.  I have fantasies of selling said pattern as a download, and maybe any actual handpaws too. Above, my fifth and final attempt to sculpt said model. Now, to take a pattern from the model and enlarge it.

Here we have the paw partially taped up, using white Duck tape over a layer of plastic wrap. I've sketched in lines where I think the seams will be, and registration marks (those little hash mark things) to help line the pattern up again once it's disassembled. I forgot to take pics before I started cutting the pattern off, so there's pieces missing between the middle toes here.

Here, the underside of the foot, again showing potential seam lines and registration marks. 

The pattern cut off the foot, lots of little pieces everywhere, don't sneeze! Then laid out and taped down on a piece of construction paper, to help keep them from slipping and sliding all over the place under the projector lid. 

And my very high tech projector setup in the basement, a piece of paper taped onto the washing machine for tracing out the enlarged pattern. (My daughter says the projector is the most analog thing she's ever seen in her life.)  I rolled the projector back and forth on its little wheely cart until I got the pattern to what looked like a good size, comparing it other patterns such as Matrices' and Freakhound's to get it in the ballpark.

The enlarged pattern, cut out and ready to go.

And, a first paw mockup using the pattern and cheap material. It does kinda sorta look like a paw, but I'm not happy with it. Next, revisions! 

I have two goals in mind here. One to make my own handpaw pattern. The second is to use this really cool technique furry how-to goddess Matrices describes in this tutorial, in which a small clay model is made, a pattern is taken from the model, and the pattern is enlarged to the proper size with an overhead projector. I have fantasies of selling said pattern as a download, and maybe any actual handpaws I make with it too. I have been told that the furry world could use another good feral handpaw pattern and that there's probably untapped market demand there. Charge!

For this first attempt I tried making a rough paw shaped chunk of clay and carving toebeans out of the bottom and knuckles and toes out of the top. This sculpt has a lot of problems but the worst in my mind is that the toebeans and palmar pad all wound up on the same plane, parallel to the wrist, making the paw look stiff and unnatural. 

For this second attempt, I tried to make the angles of the toe bottoms more natural. Closer, but not there yet. The top of the foot also  leaves a lot to be desired, looking like a featureless cube of clay, especially when viewed from the top.

Attempt number three, when viewed from the side, has a little more of that oval shape we're going for. The top of this foot also looks more shaped and natural than those in the previous two. However it also looks a little squished and disproportionate. When viewed from the top, the toes look too long and the back of the paw too short.  

Attempt number four features... an armature! What a concept! Underneath the clay the armature looks like a little wire tree, with the trunk for the wrist and palm and four branches for the toes. The armature helps to hold the parts of the foot in place, keep them from getting squished out of shape, and maintain the correct proportions.  The wire also makes it easier to bend the toes into the proper position without breaking them off.  I'm happier with this foot, but I can't help but think the back of the paw looks a little swollen, like it was stung by a bee.

​This group of photos shows a slightly earlier version of the last paw undergoing some last minute edits. The first photo  shows the foot being checked against a favorite reference pic, and the second photo shows a tracing of this earlier version being checked against a superimposed tracing of the reference pic. (I especially love this tracing as it really shows how the two outer toes on a dog's foot are different sizes, with the "pointer" toe being larger than the "pinky" toe.) The third pic shows the finished foot, after all the edits have ben made. 

Above, a turnaround of this last paw, looking a little worse for wear from the pattern making process. (More on that later!) This paw is also built on an armature, similar to that in attempt number four. ​ Perhaps more improvements can be made on this foot but at this point I was thoroughly sick of clay feet and wanted to get on with it. Charge!

I love both Silas and Artemis, don't get me wrong! But I'm also really entertained by the difference between these two, especially considering that they're built on identical resin bases, with identical resin and silicone parts.

Here we get a little peek under the skin, as it were. For Artemis (and her brother Garm) I extended the top of the head back and made ruffs out of foam, made the ears out of Varaform and felt instead of Foamies, and used the ear vents as bases/supports for the ears instead of sewing the vents in afterwards. The ears are glued onto and supported by the foam instead of the resin base, which allows more flexibility with their size and shape. I got this idea from Stuffed Panda Studios, and the designs of the ears and ruffs are adapted from her designs. Credit where credit is due!

Process pics. Ears freshly assembled, being inspected by the Feline Assistance and Cat Hair Distribution Department.

Foam added to the top of the head, ears partially glued on. Does this dude look weird or what?

Cheek fluffs added, and approved by the Feline Assistance Department. The triangular part under the chin helps with patterning the neck later on, and is cut off afterwards.

Brother and sister with ears and foam added, ready for patterning!

Above, two straps made by cutting webbing (not elastic, we don't want these guys to stretch!) to about 12” lengths, feeding them through the two front clips, folding them in half and gluing the halves to one another.   No glue on the clips, they need to be able to rotate on the straps. The suspension will be (well) suspended from these straps inside the head, allowing it to move and conform to the wearer's head.

​Now, to make the "slots". The short story is, these two new straps will be glued between two layers of foam inside the head. I imagine the straps could also be riveted inside, or perhaps just glued to the bare resin, but foam sticks really hard to the scored-up inside of a head with hot glue, and the straps stick really hard to the foam so… Plus the foam provides a much larger gluing surface and therefore more security, in my mind anyway.

​

Above, the first layer of foam, visible underneath the browband, has been glued into the head. Then, the the correct placement for the suspension is found, with the browband going across the forehead just above the eyes. The clamps are only temporarily holding the suspension in the correct place, the browband will not actually be fixed to the mask like this but will be able to move inside the head somewhat.  

Next, the two new straps are glued on the foam directly underneath the two preexisting straps with which they share clips. I glue the straps all the way from the front of the mask to the back, where I  trim off any extra. The more gluing surface the  better.  Again, no glue on the clips! 

I start working the top layer of foam before the suspension is glued in, and finish it afterwards.  Above, making a pattern for this part using standard duck tape patterning procedures. I often use aluminum foil under the duck tape in place of the more standard plastic wrap as it is easier to handle, especially in a concave shape like this. 

Next, cutting the slots for the clips into the pattern. Cut a little bit, try sliding the pattern over the clips, cut a little more, slowly but surely. Worse comes to worst the slots can be taped over and started over again.

Above, the finished pattern for the top layer of foam. 

 

Above, the second foam piece has been cut out, laid into the head over the freshly glued pair of straps, and held in place with Wonder Clips. Working from one end to the other I'll unclip one Wonder Clip, smear hot glue around underneath the foam, and press it down until it cools. I work my way systematically across the head, unclipping each Wonder Clip in turn, putting glue under the foam, and moving on. The Wonder Clips keep the foam in the exact correct position while it's being glued. I'll cover the entire underside of the foam with glue, paying special attention to the openings for the clips. Lots and lots of glue, but again, none on the clips!!

Trying it out. I'm pleased with how it works.

Above, the suspension in the finished head. From these pictures you can get an idea of how it "floats" inside the head. It also makes the mask nice to take off and on, as once the back strap is adjusted to the wearer it's a lot like putting on a baseball cap. No straps to fasten and unfasten. 

I hope that this has been helpful to you. If you have any questions please feel free to ask! Thanks for looking!

​

Usually I make masks by negative casting, that is, casting *inside* of a mold. But since I've been getting requests for rabbit masks faster than I can have a mold made, I've been making them by positive casting, ie, casting them *outside* of a form, in this case the original plasticene sculpture. Here's more about this method.

First, I liberally apply Vaseline to the sculpture as a release agent. Then I mix Celluclay (a kind of commerial paper mache pulp) and roll it out into approximately 1/8" thick sheets between two pieces of wax paper. These I put into the freezer for 8 minutes to make them less sticky and easier to work with, and then I peel the wax paper off and apply the sheets over my sculpture. I blend the edges of the sheets together and smooth out any major lumps, but otherwise I don't fuss too much over the texture. It's much easier to deal with after the Celluclay is dry.

The cast will need to be cut into pieces in order to remove it from the original sculpture. After I apply all the Celluclay, I make score marks along the parting lines with a clay tool. Otherwise, the Celluclay would be very difficult to cut apart when it is dry.

Then I set the mask in front of a fan to dry. Usually after an hour or two the Celluclay will start to feel leathery and I'll be able to add a little more detail back in with a wooden clay tool. After a day or two it is usually dry enough to remove from the sculpture.

Here's the beginnings of the cast, with the score lines pressed in:

Here's the cast with one of the pieces removed and the original sculpture showing underneath:

Here's all three pieces removed from the sculpture, ready for assembly:

At this point speed is of the essence. I reassemble the pieces as quickly as possible, as if I leave them for any time they will warp out of shape and not fit together well. I make holes along the edges of the pieces, lining them up with each other on either side of the seams. If the pieces are still a little damp I can make the holes with a bamboo skewer, if they've dried more thoroughly I'll need to use a drill.

Then I tie the pieces together using twist ties (I save these compulsively) and apply glue all along the seams:

I dry the cast on a wig stand or stuff it with wadded up newspaper to help it keep its shape. Then I fill in the seams and any thin spots with more Celluclay and let it dry again.

After I've gotten a sturdy shell on which to build, I begin to add texture and refine detail, both by adding back on with wet Celluclay or by carving with a Dremel. Here's the rabbit mask with the beginnings of hair texture, created by adding a thin layer of wet Celluclay and working it with a wooden clay tool:

Here's the mask hairier and more refined. The brown marks around the eyes are scorch marks from the Dremel.

Hairier and more refined still:

Then painted and finished! The Celluclay will need to be sealed before it is painted, as it will absorb humidity and warp like a son of a gun otherwise. I brush on a layer, inside and out, of slightly diluted Weldbond (a kind of waterproof PVA glue) to do this.

As you can see, in a positive cast, much of the original sculpture's surface detail (hair, wrinkles, etc) is lost and needs to be added back in. How much detail is lost depends on the material used- a lot with Celluclay, but less with leather and other types of paper mache. In a negative cast, surface detail is preserved by the mold. This is the major reason why I use molds to reproduce most of my masks. However the fur texture on this mask is fun to create by hand, and I play with the original rabbit sculpture a little every time I make a new positive cast, mostly tweaking its fit. Positive casting also allows me to go more quickly from an original sculpture to a wearable mask, since there isn't the intermediary step of having the mold made. Plus, it's always good to have more than one tool in the tool box!

During our last thrilling episode, our bold heroine had just finished a mask sculpture in a blazingly fast twenty one hours. Tune in this week to see if she can actually make a mask before Halloween!

I positive cast the mask in Celluclay over the plasticine rabbit sculpture and let it dry with the help of a fan. Then I cut it off, reassembled it, filled the seams and added the hair texture with more Celluclay. I just got a new batch of Celluclay and don't know if it's because it's been reformulated or just because it's fresh and new, but it was so much smoother and took texture so much better than it has before.

Here is the mask with texture freshly applied. The hair on the nose and muzzle looks rather schnauzer-ish, so I later sanded it down.

Here is Brian the hapless hubby modelling the mask with the flash going off in his eyes. I've tamed the hair texture somewhat, as well as sanded down the eyes, the nose, and inside of the ears. At this point I deemed the mask was ready for paint!

The customer sent me this wonderful traditional Aurthur Rackam illustration for ideas for colors.

I love this color scheme, with the creamy/yellowy white, the sepia undershadings, and brownish/reddish eyes and nose. That is one seriously wierd looking bunny though!

And.. (drumroll please).. the finished mask!

I added just a tiny bit of metallic copper paint to the irises, so that the eyes will flash when the customer moves his head. Overall I'm really pleased with how this mask came out.

And... as an added bonus, this is the only Sans Souci mask to date that is really two masks for the price of one. What a deal!

While I was getting this cutie ready for eBay, it occured to me I could snap some pictures and give a demonstration of my current method for hairing a mask. (This mask is available at auction on eBay until March 15, cheap because it's a materials test and too heavy to wear.)

Equipment and materials needed: Wefted and perhaps bulk Kanekalon hair in choice of colors; glue (I use a tacky white craft glue, others I've spoken to prefer hot glue); cotton swabs; wax paper; sharp scissors, a pencil, and a small container of water.

More on hair. I can imagine people out there scratching their heads and going, "wefted??" Essentially that means the hair is sewn onto long strips, which makes it much, much easier to apply. I've purchased just about all of my hair from African-American beauty supply shops, where it is sold as 'hair extensions'. I use the bulk hair for areas where I don't want the weft to show, ie, at and near hairlines, although I also use hair that has been cut from the weft on another mask during a bang trim or such. So far I have only found this hair to be available wholesale, so a wholesaler's number is needed to purchase it. However it is possible to buy repackaged (?) bulk hair for a somewhat greater cost from www.monstermakers.com.

So essentially I divide areas to hair into three parts: the back of the mask, where I can use the wefted hair; an area roughly 2 or 3 inches away from the hairline where I will glue loose hair; and any actual hairline itself, for which I will construct a little 'hairpiece'.

Here we see the mask looking something like a tonsured monk, with about half the wefted hair applied. Applying wefted hair is easy peasy. First I cut the weft to appropriate lengths. Then starting at the back of the mask and working forward, I apply a bead of glue to the weft and apply it in rows approximately 1 - 1 1/2 inches apart. Sometimes I'll need the hold the ends of the weft down for a few minutes until the glue starts to set, or worse comes to worst I'll reglue the ends down after the rest of it has dried.

In this picture I have applied all the wefted hair and am now gluing on loose hair. To hide the weft, which is convenient but rather ugly, I switch from the wefted hair to the loose hair about three inches or so from the hairline. I apply a bead of glue to the mask, and then I pick up small (about 1 inch wide) and thin handfuls of hair, trim the edge square with a sharp pair of scissors, and lay it down into the glue. Then I press it down using a damp cotton swab. When the swab starts getting too gluey and the hair starts sticking to it instead of to the mask, I throw it away and get another. It helps to have a small container of water and a big pile of swabs nearby before starting this task.

I am more likely to err on the side of making the handfuls of hair too thick instead of too thin. Too thick, and most of the hair will not stick in the glue, it will just come loose and make a mess. It is almost impossible to err on the side of making the handfuls too thin.

I make the rows closer together with the loose hair than I do with the wefted hair, about 1/2" apart. The loose hair has to be applied more thinly, so the rows need to be placed more closely together to cover adequately.

Above are a series of pics showing the creation of a hairline. I usually do this part first, before I do anything else with the hair on a mask, so that the pieces have time to dry and will be ready by the time I need them.

(First pic.) I trace the hairline with a pencil on a piece of wax paper, lay down a line of glue, and then press loose hair into the glue using a damp cotton swab. Again, if the swab starts to get too sticky, and the hair wants to stick to it instead of the glue, I throw it out and start with another. I let this dry until the glue is clear (usually overnight) and then (second pic) trim along the pencil line. After this I (third pic) very carefully peel the finished hairpiece from the wax paper, and (fourth pic) glue it in place.

Above is a pic of the nearly finished hairline in the front of the mask as well.

After the glue has dried overnight, I comb out the loose hair (there is always a lot of loose hair, don't worry too much about any shedding at this point) and then trim and style if I so desire. I put any big hanks of trimmed hair in a ziplock baggie to save for future hairing projects, and then to tone down any shininess, I color over the dried glue on the hairline with acrylic paint or a matching Sharpie.

There it is! Any questions, please feel free to drop me a note at info@sanssoucistudios.com!

As I've been casting different masks using papier mache strips, I've been noticing that the masks' overall shape has a lot do do with the degree to which they try to warp during drying.

Above I have posted pics of the backs and insides of a "Rip" mask, a "Rival" horse mask, and a little eyeball mask.

The "Rip" mask really wants to warp during drying. I believe it's because the mask has an overall cylindrical/conical shape with a wedge cut out of the bottom. I think papier mache strips tend to want to pull along curved surfaces as they dry. There is nothing to stop that pull along the bottom of this mask, so it warps. You can see that I wound up putting a triangular "plug" in the jaw to prevent this.

The horse mask "Rival" warps only a tiny bit during drying. I believe this is because the cylindrical/conical part of this mask is closed, and the open part on the bottom is circular. As the papier mache strips dry and try to pull, there isn't anywhere that they can move to. All the available space is filled.

The little eyeball mask does not warp at all during drying. It doesn't have much of a curved shape to it, and besides, it has 1/4" lip at a roughly 90 degree angle to the mask all around the edges. I believe the pull of the papier mache strips on this little lip cancel out the pull of those on main mask as they dry. This lip, while a tremendous pain in the butt to cast, also adds a lot of strength to the edges of the mask, which also helps to reduce the number of layers of paper I need to use.

In general, the more details a mask has (folds, wrinkles, bone structures, etc) the less likely it is to warp, as the details interrupt the pull of the strips as they dry. Conversely a smooth mask is more likely to warp, as little interrupts that pull.

Technicalities... but let me tell you, a warped mask is no fun!!!