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CNC template · Learning
Geoboard for rubber bands
Board with holes for wooden pegs: stretch rubber bands into figures, areas and angles. As a grid with coordinates or as a circle with twelve pegs for angles.
- Size
- 176 × 176 mm, 18 mm thick
- Material
- Hardwood (beech, oak)
- Difficulty
- Beginner
- Milling time
- approx. 16 min
- Bits
- End mill Ø 3.175 mm, V-bit 60°, End mill Ø 6 mm
- Customise
- Size, text and details adjustable with sliders
- With a laser
- milling machine only (deep pockets)
Try it without an account · carve with Chrome or Edge · no installation
Build instructions
Materials and accessories
| Qty | Part |
|---|---|
| 1 | Beech dowel rod 6 mm |
| 1 | Coloured rubber bands |
| 1 | Wood glue (water-resistant D3) |
Also: sandpaper (grit 120 and 240), a utility knife or fine saw and, for joints, a rubber mallet.
Carving and finishing
- Clamp the workpiece flat on the spoilboard or secure it with double-sided tape, and set the origin as shown in the carving assistant.
- Carve the peg holes (5.9 mm, 10 mm deep) with the 3.175 mm end mill, engrave the labels, then cut out the board.
- Free the parts at the holding tabs with a utility knife or fine saw and sand the tab remains flush.
- Lightly break the edges with sandpaper (grit 120, then 240) and remove burrs.
Assembly and final touches
- Saw the dowel into 25 mm pieces, chamfer the ends slightly and tap them into the holes with a drop of glue; all pegs the same height.
- Stretch triangles, squares and areas with rubber bands and count the squares; on the circle show angles in 30° steps.
How to carve this template
- OpenOpen the template in the app and adjust size and text if you like.
- CheckLook at it in 3D, check run time and warnings.
- Set upThe carve wizard guides you through material, clamping, bit and zero point.
- CarvePress start; the app drives your Grbl router directly over USB.
