The Jeweller's CAD Numbers
The dimensions, clearances and tolerances that decide whether a piece casts and sets. From The CAD/CAM Jeweller, Volume 1.
A render that looks right on screen can still fail on the bench. This is the checklist to run before a file goes to print or to a caster, every figure tied to the book page it comes from.
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The 31 dimensions, clearances and tolerances that decide whether a piece casts and sets, from The CAD/CAM Jeweller.
A one-checklist reference pulled from the published book: every clearance, wall thickness and tolerance a jeweller needs to check before a file goes to print or to a caster.
- ·Ring modelling minimums: sizing area, bridge, shoulders and outer walls
- ·Claw and bezel rules by metal, including the 1.20 mm platinum claw ceiling
- ·Culet clearance and flush-setting rules for secure stone setting
- ·Mould shrinkage and sprue diameter starting points for casting
- ·Print rules: support angle threshold and bridging span without support
From The CAD/CAM Jeweller, Volume 1.
What is inside
- ✓Ring modelling minimums: sizing area, bridge, shoulders and outer walls
- ✓Claw and bezel rules by metal, including the 1.20 mm platinum claw ceiling
- ✓Culet clearance and flush-setting rules for secure stone setting
- ✓Mould shrinkage and sprue diameter starting points for casting
- ✓Print rules: support angle threshold and bridging span without support
Three of the 31
Finishing loss: ~0.20 mm total on a shank (p.164)
Platinum claw ceiling: 1.20 mm (p.165)
Culet clearance: 0.5 mm minimum (p.193)
When you want the method, not only the numbers: Rhino CAD/CAM training.