Bill of Materials
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| 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! | ||||