1
Pick your shape
The thing your mold will create
The longest side of your shape. 70 mm ≈ the size of a bar of soap.
Turn the shape so its widest part faces sideways — molds open easier that way.
2
Choose mold style
We picked the best one for you
3
Mold settings
Good defaults are already set
Pour spout
A funnel hole on top to pour through
A funnel hole on top to pour through
Snap-fit alignment bumps
The two halves click together perfectly
The two halves click together perfectly
Chunkier walls = tougher mold, more filament.
A tiny gap so your cast pops out without a fight.
Slide the split line up or down the shape.
Air vent
Thin hole that lets trapped air escape
Thin hole that lets trapped air escape
Need finer control? Flip on Advanced at the top.
4
Build & download
Print-ready STL files
Open mold
Closed ←→ Open
Drag to look around · scroll to zoom
Your mold
StatusNot built yet
Mold size—
Parts to print—
What you'll need
Wax—
≈ cost per cast—
Filament—
≈ print time—
Why makers switch to us
Free plan: 10 downloads a day, no watermark ever, and your files never leave your device.
Selling your casts? Pro ($15/mo) gives you a commercial license that you keep forever for everything you make while subscribed — even if you cancel. See plans →
Selling your casts? Pro ($15/mo) gives you a commercial license that you keep forever for everything you make while subscribed — even if you cancel. See plans →