In addition to my welding class I'm taking a machine shop class. Our
project involves a little piston air motor.
To make the cylinder for this we're instructed to drill & ream a
blind hole. I finished and reamed the hole, it's straight and clean,
except that it appears a chip wedged itself between the reamer and the
wall and scored the inside of the cylinder, making my piece scrap.
Is that just a danger of making a hole this way, or is there
something I can do to prevent such a problem? I did run the reamer a
bit faster than I was supposed to because the mill I was on had a broken
low range. Could that lead to this sort of thing?

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