I feel like I have more trouble with countersinking than anything else. This is my second part that I have to replace due to a countersinking error. I have a dedicated microstop cage for my 3/32 bit, and I always do a few test holes in scrap, but I still seem to get inconsistent results. Fortunately, this was only an $18 part. I've been using my cordless drill for the countersink. Would it be any better to use the pneumatic drill? Any advice appreciated.
Another countersinking error by Matt McCoy, on Flickr
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