Stuff I had to buy:
End mills from Lakeshort Carbide:
- $23 Arduino Uno clone plus CNC shield plus DRV8825 pololu-style drivers
- $40 safety power tool switch (e-stop power cutoff)
- $99 Makita RT0701C router (had a wider RPM range)
- $25 1/8" collet for Makita from Elaire
- $20 black rubber accordian chip shield (which I cut into bits to cover the lead screw)
- $21 24V 15A power supply
- $29 Yost 3 inch drill press vise
Stuff I had to 3d print:
- $10 1/4 uncoated carbide 2 flute square end mill
- $5 1/8 uncoated carbide square end mill
- $15 1/4 uncoated carbide 2 flute drill/mill (for chamfers)
- $12 1/4 uncoated carbide 2 flute ball end mill
- 65mm adapter for router holder
- chip shields / lead screw covers
- washers for vise mounting
- enclosure door hinges and latch
Tools I bought because I didn't have them yet:
- $45 shop vac to suck up chips / dust
- $18 laser tachometer to measure true spindle RPM
- $6 feeler gauges to help with zeroing
- $48 reciprocating saw & blades to rough cut stock
Joe's Minimill Build
Build in 'X/Y Table Style CNC Mill' published by bassgojoe, Mar 19, 2018.
I put this together to cut aluminum. Chips get everywhere! Cover your lead screws. Put the mill inside an enclosure. DON'T mount electronics (especially the power supply) inside the enclosure, chips will get into it and short it out. Remove the manual jog wheels, they contribute to chatter (something about having a mass on the end of the lead screw causes vibration). I cut at 14000 RPM, 0.05 inch width of cut, 0.05 inch depth of cut, 30 inches per minute and just barely avoid chatter.
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- Build Progress:
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- Build Complete!
MaryD, cdii, Mark Carew and 1 other person like this. -
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Build Author bassgojoe, Find all builds by bassgojoe
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Build Details
- Build License:
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- CC - Attribution - CC BY