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Bill of Materials
Many of you have asked me to provide a list of materials and
costs for the CNC Machine. Here, I will provide a list of the
materials, costs and where they can be purchased. In the list,
I will also include various alternatives for different types of
applications. This may include types of cutting tools, types of
motors for the axes, etc. I will keep this list alive and
updated in the "stuff for sale" in lieu of a better place.
Please write me with suggestions, and if you know of better
prices and places to get these materials. This list is a work
in progress, since I wanted to make it available immediately.
Most prices are from memory, until I find my receipts somewhere
in one of my packing boxes, so you may see numbers change, but
it gives you a general idea.
| CNC Machine Structure |
| Description |
Unit Cost |
Qty |
Cost |
Upgrade Cost |
| MDF 2' x 4' x 3/4" |
$9.00 |
3 Sheets |
$27.00 |
$27.00 |
| Aluminum Angle 3/4" x 1/8" |
$1.50/lf |
8 |
$12.00 |
$12.00 |
| Bearings (for sale here) |
|
30 Pack |
$24.00 |
$24.00 |
| Bolts 5/16" - 18 x 3/4" L (for slide bearings) |
.17 |
24 |
$4.08 |
$4.08 |
| Nuts 5/16" - 18 (Box of 100) |
|
100 |
$7.00 |
$7.00 |
| Screws 1/4" - 20 (Box of 50) |
|
50 |
$6.00 |
$6.00 |
| Nuts 1/4" |
|
100 |
$3.50 |
|
| Cross Dowel Nuts (for sale here) |
|
60 |
|
$28.00 |
| Couplers (1/4" bore - 2 hubs and an insert) |
$8.00 |
3 |
$22.50 |
$22.50 |
| Aluminum Angle 1 - 1/4" x 1/8" |
|
8' |
$20.00 |
$20.00 |
| |
|
Sub Total |
$127.88 |
$152.08 |
| CNC Electronics |
| Description |
Unit Cost |
Qty |
Cost |
Upgrade Cost |
| Driver Board L298 L297 Combo (Very inexpensive alternative and Total DIY) |
$16.00 |
3 |
$48.00 |
|
| Driver Board (HobbyCNC 3 Axis) |
$79.00 |
1 |
|
$79.00 |
| Power Supply Components: |
|
|
|
|
| Transformer - 24Volt 10Amps |
$39.00 |
1 |
$39.00 |
$39.00 |
| Bridge Rectifier |
$4.00 |
1 |
$4.00 |
$4.00 |
| Capacitor (Min 14000 uF) |
$20.00 |
1 |
$20.00 |
$20.00 |
| Steppers: |
|
|
|
|
| NEMA 23 80 oz-in (surplus) |
$10.00 |
3 |
$30.00 |
|
| NEMA 23 305 oz-in |
$45.00 |
3 |
|
$135.00 |
| Cables contingency |
$100.00 |
1 |
$100.00 |
$100.00 |
| Cutting Tool: |
|
|
|
|
| Router |
$100 |
1 |
$100.00 |
$300.00 |
|
|
Sub Total |
$341.00 |
$677.00 |
| Computer (Quad core) |
|
|
|
Priceless! |