Milling on Brass

Milling on Brass

This topic has 4 replies, 3 voices, and was last updated 30 October 2016 at 13:42 by john dakin.

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30 October 2016 at 10:04 #263757
john dakin
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@johndakin59277
Hi, I need to profile cut out a 100mm disc out of 3mm thick engraving brass on a small cnc machine, I have used cambam to design the disc and use mach3 for machine control, my question is that when I run the program its making too many cuts to get through the stock, I am using a 3mm 2 flute mill cutter, considering that the thickness is only 3mm thick would it be safe and ok to just take 3 cuts to go through to the target depth of 3.75mm, I am new to all this so any advice on feeds and speeds and types of milling cutters best for this would be welcome.
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30 October 2016 at 10:04 #8355
john dakin
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@johndakin59277
30 October 2016 at 10:36 #263763
Russell Eberhardt
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@russelleberhardt48058
Can't you tell Cambam what depth of cut to use?

For this sort of thing I just draw the toolpath I want in Draftsight, save the file as a dfx then translate it to gcode with DXF2GCODE, telling the latter what depth of cut to use for each pass. All free software and easy to use.

Russell
30 October 2016 at 10:43 #263765
Anonymous
Three passes should be fine. What I'd do is create a spiral toolpath that kept going round with a continous cut depth of, say, 1mm rather than generate separate constant depth passes. That saves having to ramp, or spiral, in on each pass.

Andrew
30 October 2016 at 13:42 #263795
john dakin
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@johndakin59277
Thanks very much for the info guys, ill give it a try
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