Comments on: Our CNC Machine’s First Cuts

By: Harford HackerSpace | Powered By Nerd

Harford HackerSpace | Powered By Nerd — Wed, 23 Jun 2010 01:52:39 +0000

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By: Jason McMahon

Jason McMahon — Wed, 13 Jan 2010 01:22:23 +0000

Lubrication is really not necessary. The heat generated is actually pretty low.

Also, we broke the bit because the material we were cutting was not flat, but raised unevenly on one side. (It was a scrap piece of aluminum and had a slight bend in it.) When the bit hit the raised part, it was like hitting a brick wall. On a flat piece, it cut just fine.

By: Chad

Chad — Tue, 12 Jan 2010 22:59:09 +0000

Hi guys. Neat little build. I have built several cnc machines using mach, I also do machining for a living.

Anyway you need to use some lube for aluminum. A can of wd40 or similar will help lots.

Also look into ‘chip load’ for the cutter. That spindle rpm is really high and It will be real easy to load the bit and snap it (like you found out).

Have fun,

chad

By: Ril3y

Ril3y — Sat, 02 Jan 2010 21:24:16 +0000

hey guys.

Very cool stuff! I have been working on a different project for the past few weeks other than my CNC. Here shortly I plan to pick it back up.

But great work!

Ril3y

By: Gilliam

Gilliam — Fri, 01 Jan 2010 23:20:30 +0000

holding a freshly cut star, wearing a ninja turtles shirt. nothing wrong here