Recently I got inspired by this guy who models their cosplays with cardboard and I got surprised by how good the round shapes ended up look like. I only want to make a mask with round shapes but every tutorial I found uses straight strokes for the template and I want to know if I can find more information of how to do it the other way
>>625421im sure there's some technical name for this, i have a template for dark souls helmets made of foam that do this too.
>>625421I have a book about cosplay making with Eva foam if you want? can email it to youwould translate to cardboard pretty well
>>625423Yes! It would be very helpful. How can I found you?
>>625424just post an email and i'll send the book to that, if you want a fake one you can use Proton mailhttps://proton.me/mail
>>625425or just email me herePaperPigPaperPig@proton.me
>>625424Ended up just using my email, proton has a 25mb limit lol
>>625427Sent an email to your proton account! Hoping to get a copy of this book please.
>>625428sent
>>625429Thanks mate!
>>625427I just checked the content of the book and it is actually very helpful for what I am looking for. I really appreciate your help! !
>>625431hell yeah! I got a bunch of cosplay books from Humble Bundle awhile agoglad I could help
>>625421That's dragon ball z armor.
>>625423Would you be able to upload it to a host like catbox or Mega please? I'm interested too.
>>625434same here
>>625434>>625435Sorry i completely forgot about this thread, here you gohttps://mega.nz/file/DyRwxB6D#tsff2T3F8mMUDFOGiVIecCcIHH27keEcMkGG0uCRtvI
>>625436thank you!
The technical name for a shape that can be made from a flat plane via cutting, folding and bending but without stretching or compressing is a developable surface-https://en.m.wikipedia.org/wiki/Developable_surfaceCylinders, cubes, pyramids and cones are basic examples, and with computers extremely complex shapes can be segmented and unfolded to create patterns for 3-D objects.Curved creasing/folding (see pic) is another option that can develop amazing shapes with minimal cutting and assembly work
>>625438Has someone got this image? only the thumbnail is avalible
>>625421>https://mega.nz/file/DyRwxB6D#tsff2T3F8mMUDFOGiVIecCcIHH27keEcMkGG0uCRtvIthat saiyan armor caught my eye, it looks really good ! I want that template
i think its interesting, the structure looks good.
>>625438yup.
>>625421For searchable terms: a **dart** is the sewing/pattern term for the type of cut shown in your helmet pattern photo used to turn a flat surface into a ball-like curved surface. The opposite concept of adding material to get a saddle-shaped surface doesn't have an exactly analogous term in sewing to my knowledge, but **godet** comes kinda close.
>>628206If you just want to start getting your hands dirty, one way to come up with 2d cutting patterns like you see here is to work backwards from 3d to 2d. For example, let's suppose you wanted to design a suit of cosplay armor that will fit you, and you want to know what shapes to cut out of foam or cardboard that can be fitted together into your armor. You get a friend to wrap your whole body in saran wrap, then wrap around that saran wrap with duct tape. Then you draw on the duct tape with a sharpy and try to partition the surface of into areas that have roughly zero gaussian curvature (either flat-ish surfaces like the front of your chest, cylindrical-ish sections like your upper arm, or conical sections like the taper of your forearm), areas with negative gaussian curvature (pringle/saddle shapes, like where your pectoral muscle attaches to the arm), and areas with positive gaussian curvature (roughly spherical bumps like your shoulders or roughly spherical indents like your armpits). mark each region with a +, -, or 0 according to what its curvature is.Once you separate the surface into these curvature areas mark each side of each label each side of each sharpie line with a number so you can put it all back together later. Then carefully cut off the saran/duct tape along the sharpie lines, preferably with kiddie scissors so you don't stab yourself.
>>628207Now sort the pieces +, -, and 0 piles. The zero pieces should flatten out nicely as they are. They can just be cut out of foam as they are. + and - pieces will stubbornly not want to lie flat as they are. The (+) pieces will get taught around the edges and loose in the middle when you try to flatten them. They may even tear around the edges if you try too hard. To get it to lie flat, you add some some labeled sharpie lines around the outside then cut them (like in your helmet photo). These are your darts. Do this until it lies flat.The (-) pieces will get all wrinkly and fold over themselves around the edges if you try to flatten them. to get these flat, you gotta remove some material around the edges. Draw some pizza slices (godots) around the outside and label the edges, then cut the pizza slices all the way out, but hold onto them. Do this until each of the pieces lies more or less flat with no overlap around the edge of each main (-) piece. Now you have a bunch of flat pieces which you can trace onto your cardboard or whatever. Add a little extra size around all edges (except for the edges from darts and godots) so the thing isn't skin-tight. Cut all the pieces, bend them into shape, and glue them together by the edge labels. Now you have some fitted armor.
>>628208If you want to learn about this stuff in more detail here are a few different avenues you can dive into pretty deep:For sewing and patterning stuff: look up Colette Wolff's "The Art of Manipulating Fabric". Which covers darts and godots and a million other things that come in handy for this kinda work.To learn about the curvature type stuff requires a lot of math background, but generally speaking this is the primary topic of differential geometry of surfaces. Here's a URL to a free textbook pdf: https://docenti.ing.unipi.it/griff/files/dC.pdfChapters 1 through 4 would get you to a working knowledge of why the saran-wrap and duct tape method with the +, -, and 0 curvature regions works. Fair warning that diff geo pretty much demands you understand multivariate/vector calculus and linear algebra, and maybe some real analysis.I have also seen someone mention developable surfaces, which is the principle object of study in paper-folding mathematics, AKA computational origami. That's another fruitful avenue of study, but I warn it's significantly more challenging math than the diff-geo. That being said, you can just use tools other people have made based on this math without understanding it. Here's a list of resources you could use to wet your beak surrounding comp origami: https://langorigami.com/article/computational-origami/
