Help needed for cutting.080

[Seano32]

I am trying to cut some letters on our router and having a hell of a time. I am using and onsrud bit (63-620) and also cutting on 5052 alum sheets. I am running @13800 max rpm and running a feed rate of 50 IPS, but getting build up on the bit and ruining the cut. Any advice?

 

[Moze]

5052 is better for applications where bending is required. 6061 is better for machining. Might want to switch up your alloy.

 

[nwsigns]

And slow your RPMs down to around 9k. I run mine at 8000RPM 1/4" end mill upcut at 50 IPM but also run a vortex air cooler. Your problem is that the aluminum is soft, getting hot and then gumming up your bit which as you know makes a nasty mess and ruins your bit. Make sure your bit is sharp - as in perfect.

 

[Seano32]

Ok. I have a new bit and will try to slow it down. I have an air line blowing directly on the bit and cut area. Would this be ok? Also I have read in other places to spray the bit with wd 40 to help. Opinions on this.

 

[Techman]

WD 40 sux..

Tap magic for aluminum is best.

 

[J Hill Designs]

WD 40 sux..

but works in a pinch

I prefer Tri-cool