Coming soon
STL file
Kaiju Mask
Original wearable kaiju mask, split for home printers. Personal-use licence.
$7Regular price $10Launch price · Personal-use licence
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STL files & CAD design
Print-ready files, designed by people who print.
Original STL files for masks, cosplay and useful parts, tested on our own printers. Need something that doesn't exist yet? We'll design it from your sketch, photo or measurements.
- Test-printed before release
- Supports & orientation notes
- STL + STEP on request
Catalog
STL files, launching on Thangs
Our first original designs are being prepared now. Launch prices: simple files $5, masks and props $7, larger kits $10, with a members' club for everything.
Coming soon
STL file
Print-in-Place Hinge Kit
A set of print-in-place hinges in several sizes for boxes, lids and props.
$5Personal-use licence
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STL file
Light-Up Crown
Crown with channels for an LED strip, for costumes and parties.
$7Regular price $10Launch price · Personal-use licence
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STL bundle
Christmas Advent Kit
A printable advent calendar kit with small surprises to print and fill.
$10Personal-use licence
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Membership
EMA STL Club
Monthly membership: every new EMA file while you're a member. Planned on Thangs.
$10/moPersonal-use licence
Notify mePersonal-use licence. Want to sell prints? Add a commercial licence for $18 per design.
Custom STL & CAD
Quote engineering work
Your idea, as a file you own
Fixed price per design. You get the STL (and STEP on request) and can print it anywhere, or have us print it for you.
Fix / repair
Launch price Regular price $25
$19
Existing file
- Fix a broken or non-manifold STL
- Resize, split for print bed, add keys
- Hollow or thicken walls
Simple part
Launch price Regular price $49
$29
1 part, 1 revision
- Brackets, knobs, caps, spacers, adapters
- From a sketch or measurements
- Print-ready STL
Most picked
Standard
Launch price Regular price $149
$89
Up to 3 parts, 2 revisions
- Enclosures, mounts, assemblies
- Snap fits, threads, hinges
- STL + STEP files
Complex / cosplay
Launch price Regular price $299+
$149 +
Scoped together
- Masks, helmets, props, sculpted forms
- Split, keyed and test-fit
- Original designs only (no licensed characters)
Engineering CAD + simulation
Stress, thermal, mold-flow and shape optimization before you print or machine. Launch price from $299 (regular from $499).
Launch prices apply to our first 10 custom designs. Regular prices (struck through) apply after that.
Our design process
1 · Sketch 
2 · Technical drawing 3 · CAD model 
4 · Simulation
From sketch to simulated part
Simulation work
Injection mold flow 
Thermal stress 
Electronic cooling 
Gripper arm
Tested in software before it's printed
STL Club
Every design, one membership
Members get every new STL we release, early access to new drops and a vote on what we design next. Hosted on Thangs, so downloads, licences and payments are handled there.
- $10/month, cancel any time. Founding members keep $10/month for as long as they stay subscribed
- New original designs each month
- Members-only variants and remixes
STL & CAD FAQ
What do I need to send for a custom design?
A sketch, photo or reference plus key measurements and what printer or material you'll use. If you're not sure, describe the job the part needs to do.
Do I own the custom design?
Yes. Custom designs are yours once paid, including the right to sell prints. Catalog files are personal-use unless you add a commercial licence.
Can you design licensed characters?
No. We only make original designs or parts you have rights to, so you never get a takedown.
Which file formats do you deliver?
STL by default. STEP, 3MF or OBJ on request at no extra cost.
Start here
Describe the part you need
Tell us what you need. We reply by email with a clear, fixed quote before any work starts. No payment until you approve it.
- 1. Send the brief. A sentence is enough. Links to files, sketches or examples help.
- 2. Get a quote. Price, timeline and what's included, in writing.
- 3. Approve and we build. You see progress and can request changes.
Prefer email? [email protected]