🛠️ Design Your Own

Combine boxes, cylinders, spheres, cones and block letters. Mark a shape as a hole to cut it away. The download is merged into one watertight STL, right in your browser.

Add a shape

Shapes (tap to select)

I’ll use this lawfully (no weapons or weapon parts, no copyrighted or trademarked designs) and I accept the Terms.

Loading the geometry engine…

Blue outline = selected shape · drag to rotate · scroll or pinch to zoom

Heads up: designs aren’t test-printed. Check the slicer preview before printing. Overhangs steeper than about 45° (like a sphere’s underside) may need supports.

How it works

Add shapes with the buttons. New shapes start in the middle of the plate.
Select a shape from the list, then use the sliders or type numbers for size, position and rotation (all in mm and degrees). Lift Z is the height of the shape’s bottom above the plate.
Make holes: tick Hole and the shape is subtracted from everything solid it overlaps.
Overlap shapes that should be one part. The page warns you if your design comes apart into separate pieces.
Snap to plate drops the selected shape so its lowest point sits on the plate. The finished model is always dropped onto the plate when you download.
Download STL and slice it as described on the 3D Printables page.

🏭 Print On DemandNo printer? Upload your STL and have it made and shipped to you. 3D manufacturing affiliate: we may earn a small commission at no extra cost to you.Print On Demand

Get it printed

No 3D printer? Download your STL file, then have a print service make it and ship it to you.

Design and download your STL
Upload it to a print service
Pick a material (PLA or PETG for most things)
Check the quote, order and wait for delivery

Craftcloud

Compare prices

Upload once and see quotes from print shops around the world side by side. Good for one-off hobby parts.

Get quotes

JLC3DP

Low-cost & fast

Budget-friendly printing in plastics and resin, popular for small parts and prototypes.

Order a print

Treatstock

Find a local maker

Search for printers near you, which can mean faster shipping or local pickup.

Find a printer

Shapeways

Marketplace

A long-running marketplace and print service, handy if you want a wider range of materials and finishes.

Visit Shapeways

Tips: Check the size shown in the generator against the service's limits. Thin walls under about 1.5 mm can be rejected. Prices, materials and shipping vary by service and change often, so compare before you order.

Disclosure: Some links above may be affiliate links. If you place an order through one, we may earn a commission or credit at no extra cost to you. We are not responsible for third-party pricing, quality or shipping. See our Terms.