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CNC template · Workshop
Roll holder with ball bearings
Dispenser for filament spools, tape, wire or paper: two tenoned cheeks carry ball bearings, a dowel runs in them and two hubs with flanges keep the roll centred. Roll width, roll bore and axle height adjustable.
- Size
- 337 × 261 mm, 12 mm thick
- Material
- Plywood
- Difficulty
- Intermediate
- Milling time
- approx. 29 min
- Bits
- End mill Ø 3.175 mm
- Customise
- Size, text and details adjustable with sliders
- With a laser
- diode laser from about 32 W (cuts 12 mm)
Free with an account · carve with Chrome or Edge · no installation
Build instructions
Materials and accessories
| Qty | Part |
|---|---|
| 2 | Deep groove ball bearing (bore × outer diameter × width) 8 × 22 × 7 mm (608) |
| 1 | Beech dowel rod 8 mm |
| 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.
- First mill a test piece with one bearing seat and press the bearing in: it should go in with your thumb or a clamp and then sit firmly. Too tight: increase the fit by 0.02 mm; too loose: decrease it.
- Mill the bearing seats, mortises and hub holes, then cut out the base, cheeks, hubs and flanges.
- Free the parts at the holding tabs with a utility knife or fine saw and sand the tab remains flush.
Assembly and final touches
- Press the bearings into the cheeks and glue the cheeks into the base. Glue one hub centred onto each flange.
- Put the roll between the two hubs and push the dowel through bearings, hubs and roll; the hubs sit tight on the dowel.
- The roll must run easily without wobbling; the largest roll has a diameter of twice the axle height minus 10 mm.
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.
