Gears and transmission
3D-Printed Mini Bandsaw for Small Rod
- Bounding box
- 210.0 × 225.0 × 270.1 mm
- Engine
- Precision B-rep
- Parameters
- 28
- Published
- November 8, 2026
Download
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The prompt
3D-printed mini bandsaw for cutting small rod (8 mm and under) accurately, driven by one small 24 mm DC motor through a 5:1 gear stage: crowned 80 mm blade wheels with a tensioned sliding upper wheel on 608 bearings, table with blade slot, roller blade guides on 683 bearings above and below the table, and a sliding V-block rod vise with a clamp bolt plus a length stop
Parameters
| Name | Value | Range |
|---|---|---|
| Blade wheel diameter | 80 mm | 60 – 120 |
| Blade loop length you will buy | 560 mm | 450 – 700 |
| Blade width | 6.35 mm | 3 – 8 |
| Blade thickness | 0.3 mm | 0.15 – 0.5 |
| Wheel rim width (narrower than the blade so the teeth hang off the front) | 4.8 mm | 2 – 6 |
| Rim crown (helps the blade track) | 0.4 mm | 0 – 1 |
| Gear module | 0.8 mm | 0.6 – 1.2 |
| Pinion teeth (15+ avoids undercut) | 15 | 14 – 20 |
| Reduction ratio (x:1) | 5 | 3 – 6 |
| Gear face width | 6 mm | 5 – 10 |
| Added centre distance (backlash) | 0.2 mm | 0.1 – 0.5 |
| Motor body diameter | 24 mm | 20 – 30 |
| Motor body length | 12.5 mm | 10 – 20 |
| Motor shaft length | 9.7 mm | 8 – 14 |
| Motor pocket clearance (snug) | 0.15 mm | 0 – 0.5 |
| Bore clearance on the 8 mm shaft | 0.2 mm | 0.1 – 0.4 |
| 608 pocket clearance (diametral) | 0.2 mm | 0.05 – 0.4 |
| Frame plate thickness | 8 mm | 8 – 12 |
| Table top height above the lower wheel centre | 70 mm | 66 – 90 |
| Table length to the left of the blade (rod stock side) | 82 mm | 60 – 130 |
| Table length to the right of the blade (cut-off piece and stop) | 84 mm | 70 – 100 |
| Blade slot width in the table | 3.2 mm | 2.5 – 5 |
| Upper guide height above the table | 14 mm | 10 – 40 |
| Gap between the roller pairs beyond the blade thickness | 0.1 mm | 0.02 – 0.3 |
| Largest rod the vise V-groove is cut for | 8 mm | 6 – 10 |
| Where the vise is drawn along its rails (more negative = further from the blade) | -60 mm | -110 – -40 |
| Hole for M3 heat-set insert | 4.2 mm | 3.8 – 4.6 |
| M3 clearance hole | 3.5 mm | 3.2 – 3.8 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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