Mini CNC
Description
This is a mini CNC machine that uses Dremel rotary tool.
- Axis travel: 8" in X, 6" in Y, 2" in Z
- Feedrate: 15 IPM (all-thread rods)
- Accuracy: estimated 0.01"
- Assembly time: 6-8 hrs
Issues
- Higher feedrates (20 IPM) are unreliable
- Needs vacuum system for removal of chips/swarf
Firmware
Arduino GCode Interpreter
Source Files
Build Logs
- http://www.contraptor.org/forum/t-192541/mini-cnc-case-study
- http://www.flickr.com/photos/mantao05/sets/72157623378696709/
More pics
In action
Fabricating a wheel from 3/8" HDPE cutting board (left) and making pockets in UHMWPE (right)
Component list
| components | qty |
|---|---|
| angle-1 | 6 |
| angle-2 | 14 |
| angle-3 | 8 |
| angle-4 | 11 |
| angle-6 | 4 |
| angle-9 | 2 |
| angle-12 | 6 |
| angle-18 | 6 |
| coupling-nut-clamp | 4 |
| leadnut-mount | 4 |
| linear-bearing-2.5 | 4 |
| linear-bearing-3.5 | 2 |
| linear-rail-12 | 2 |
| linear-rail-18 | 2 |
| motor-mount-nema23 | 3 |
| shaft-mount | 8 |
| sliding-element-1 | 2 |
| sliding-element-2.5 | 2 |
| dremel-mount | 1 |
| parts | qty |
|---|---|
| XL240 belt | 1 |
| pulley-XL10T | 2 |
| bearing #R188-2RS | 8 |
| bearing #R3-2RS | 16 |
| thrust-bearing #6655K13 | 2 |
| motor-coupling-set | 3 |
| nut 1/4 | 24 |
| washer 1/4 | 4 |
| spring-washer 1/4 | 10 |
| screw 1/4 1L | 4 |
| square-nut 1/4 | 12 |
| threaded-rod-13 | 1 |
| threaded-rod-14.5 | 1 |
| threaded-rod-15.5 | 1 |
| threaded-rod-21 | 1 |
| screw 10-24 3/8L | |
| screw 10-24 1/2L | |
| screw 10-24 3/4L | |
| nut 10-24 |
| custom items | qty |
|---|---|
| acrylic table 6x8 | 1 |
Assembly
Todo
Bill of materials
Todo
page_revision: 22, last_edited: 1267991947|%e %b %Y, %H:%M %Z (%O ago)
