Why 3DM Files Are the Gold Standard for Jewelry CAD
If you're working in Rhino 3D or MatrixGold, you already know that the right file format makes all the difference. Unlike STL files, 3DM files are fully editable — you can resize, modify stone settings, adjust wall thickness, and customize every detail before sending to your printer or casting house.
At Jewelrystlfiles.com, all our 3DM files are built for production-ready workflows. Every design is tested for printability, with clean geometry and accurate wall thicknesses for lost-wax casting.
What Makes a Good Jewelry 3DM File?
- Clean, closed polysurfaces — no open edges that cause print failures
- Accurate stone seat dimensions — calibrated for standard round, oval, pear, and marquise stones
- Correct wall thickness — typically 0.6mm–1.2mm for wax casting
- Editable geometry — not just a mesh, but parametric surfaces you can modify in Rhino or MatrixGold
Our Best-Selling 3DM Files for Rhino & MatrixGold
Browse our most popular production-ready 3DM designs below — each available as an instant digital download:
- Marquise Kolet 3DM File – Perfect for marquise solitaire settings. Clean collet geometry, ready for stone calibration.
- Oval Kolet 3DM File – Versatile oval collet for rings, pendants, and earrings.
- Round Kolet 3DM File – The most-used collet in jewelry CAD. Accurate seat angles for brilliant-cut stones.
- Pear Kolet 3DM File – Elegant pear-shaped collet with precise tip geometry.
How to Use These Files in Rhino 3D & MatrixGold
- Download your 3DM file instantly after purchase — no waiting, no shipping.
- Open directly in Rhino 3D or import into MatrixGold as a reference object.
- Scale to your required stone size using the Scale1D or Scale3D command.
- Boolean union with your shank or setting design.
- Export as STL for 3D printing or send the 3DM directly to your casting partner.
Compatible Software
All 3DM files are compatible with: Rhino 3D (v6, v7, v8), MatrixGold, RhinoGold, TDM Solutions, and any software that supports the .3dm open format.
Download Instantly — No Subscription Required
Every file on Jewelrystlfiles.com is a one-time purchase with instant delivery. No monthly fees, no subscriptions. Download, modify, and use in your production workflow immediately.
Not sure which file to start with? Download a free sample and test our file quality in your own software before purchasing.