Posted 11 November 2008 - 08:54 AM
I am in the woodowrking industry, so I don't have a whole lot of experience with plastics, although I ran this job before, I didn't get very good results, so this time I figured I would ask the experts first.
I used a Down sprial 7/16" Solid Carbide Endmill, tried verying feeds and speeds...between 200-350 ipm, and 16000-18000rpm
Due to how narrow the parts are, one problem became apparent was material hold down at higher feeds, although I seemed to get better cuts.
Another problem was that the plastic that was already cut would melt right behind the cutter (could be due to the down spiral not cleaning out the chips enough...reason I used down spiral was to lessen the chance of material lift off -should note that I am using a flat bed Router with vacume for hold down on top of a MDF spoilboard)
Any knowledge shared on how to machine this would be greatly appreciated.
I Thank you in advance.
Posted 11 November 2008 - 09:25 AM
the down cut should be OK. if perimeter or channel cutting, try a ramping type toolpath. you do not want to plunge that material, especially if you have no cooling element available.
other than that, pretty basic stuff to cut.
Posted 11 November 2008 - 10:06 AM
Posted 11 November 2008 - 10:09 AM
Air cooling...I hadn't thought of that.
Posted 11 November 2008 - 11:49 AM
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