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#13
 
02-20-2008, 08:23 AM
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3003 should be a good candidate for the step drill. I wouldnt think you will have any problems with burring or pullup. As mentioned earlier, I would at least predrill some holes for fastening as .040 thin material will flex and the holes will remove clamping bars from the work area. I would support the cover on a board so that any burring will be on the inside surface and will be easily removed with a deburring tool. I would drill in the areas where the slots will be machined as I mentioned earlier. and after a tool change it will go very smoothly without the aformentioned disk left behing by the endmill during the plunge cut. Good luck Bob  |
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