First attempt in aluminum

[elcar903]

hmm not sure why they didn't show up but I'll re post them.

RPM is based on machine and feed rate so adjust it as needed

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[DarinB]

Interesting speeds. I've never ran my spindle lower than around 10k rpm. I'll have to try these numbers next time. What kind of parts do you cut on the vacuum plate?

I found a good page on this : http://credentiality2.blogspot.com/2...ds-speeds.html

[elcar903]

I do engraving and plastic parts with the vacuum plate mainly

[RossMosh]

With a router there are two ways people recommend cutting aluminum.

1. Fast and multiple passes. You might run at 100+ipm but only take .02"-.05" per pass.

2. Slow and deep. You need a machine with some horsepower to do it, but with a high HP spindle (5hp+), coolant/lubrication, and air you can make some pretty heavy passes. .125" no problem in one pass with 3/16" cutter.

You'll absolutely find pocketing is way easier than cutting. When cutting you need to keep the kerf and area around the cut very clean. It's very easy for aluminum to weld itself on to the bit. If this happens, you will snap a bit. A blast of air is very effective along with a spray every once in a while with WD40