Mini CNC Subset
Description
This subset includes components to assemble the mini CNC contraption, as well as few extra components for modifying it. For example, faster belt drives can be used for X and Y axes instead of leadscrews. Other contraptions can also be built from this subset, for example Dremel table saw and routing jig, and probably many others.
Specifications
TBD
Cost
- DIY: TBD
- Fabricated kit without electronics & motors: $300
Requires
- Dremel rotary tool
- For Computer Numerical Control (CNC) you need NEMA23 stepper motors and control electronics, for example Electronics & motors subset
Includes
| fabbed items | qty |
|---|---|
| angle-1 | 8 |
| angle-2 | 16 |
| angle-3 | 12 |
| angle-4 | 12 |
| angle-6 | 8 |
| angle-9 | 6 |
| angle-12 | 6 |
| angle-18 | 6 |
| sliding-element-1 tube | 2 |
| sliding-element-2.5 tube | 2 |
| sliding-element-3.5 tube | 2 |
| sliding-elements UHMWPE center pads | 8 |
| sliding-elements UHMWPE side pads | 16 |
| linear-bearing-2.5 half tube | 4 |
| linear-bearing-3.5 half tube | 2 |
| linear-rail-12 channel | 2 |
| linear-rail-18 channel | 2 |
| linear-rail-12 drill rod | 4 |
| linear-rail-18 drill rod | 4 |
| coupling-nut-clamp angle | 4 |
| leadnut-mount | 4 |
| shaft-mount angle | 8 |
| belt-clamp angle | 2 |
| belt-clamp lug | 2 |
| belt-clamp belt pad | 2 |
| motor-mount-nema23 | 3 |
| captive-nut angle | 4 |
| dremel-mount | 1 |
| parts | qty |
|---|---|
| XL240 belt | 1 |
| XL280 belt | 1 |
| XL400 belt | 1 |
| pulley-XL10T | 4 |
| bearing #R188-2RS | 8 |
| bearing #R3-2RS | 16 |
| thrust-bearing #6655K13 | 2 |
| motor-coupling-set | 3 |
| plastic spacer 1/4 | 6 |
| threaded-rod-36 | 2 |
| screw 1/4 3L | 2 |
| hex nut 1/4 | 20 |
| coupling nut 1/4 (notched) | 4 |
| spring-washer 1/4 | 10 |
| square-nut 1/4 | 50 |
| screw 10-24 3/8L bsc | 50 |
| screw 10-24 1/2L bsc | 100 |
| screw 10-24 5/8L phillips | 20 |
| screw 10-24 3/4L bsc | 20 |
| screw 10-24 1L bsc | 20 |
| screw 10-24 7/8L flat | 50 |
| hex nut 10-24 | 250 |
| screw 6-32 1/8" bsc | 50 |
| screw 6-32 1/4" bsc | 20 |
| screw 6-32 3/8" bsc | 10 |
| screw 6-32 1/4" nylon | 50 |
| custom items | qty |
|---|---|
| acrylic table 6x8 | 1 |
* bsc - button socket cap
Assembly
Bill of materials
Todo
Variations
Table
- Standard - 1/4" acrylic table, 1/4" holes
- Tapped - 1/4" acrylic table, holes with 10-24 thread
- 3 layer table - 1/4" acrylic top + masonite with embedded nuts + masonite bottom; 1/4" holes (too expensive to fabricate)
Shaft mounts
- Standard - each shaft mount angle comes with 3 button socket cap 1/8" screws
- In-house-fab - each shaft mount angle comes with set of 1/8" screws: 3 button socket cap, 2 phillips (larger head) and 2 socket cap (smaller head)
- With bearing inserts - each shaft mount angle comes with masonite bearing insert and 3 screws 1/4" socket cap
Changelog
- 04/21/10: Replaced screws: 10-24 1/2L combo with 5/8L phillips (see http://www.contraptor.org/forum/t-218353/beta-kits-feedback#post-756608)
- 04/12/10: Increased number of 10-24 nuts to 250
