Dremel and a rotary burr or a rat tail file?
Ace, borrowed the former, will try to borrow the latter. The finish isn't super important as it'll be hidden by the (stupid) crank strain gauge. I should really start a build thread for this silly TT machine.
I've a file you're welcome to borrow if you fancy a trip to SE4 or I can bring it into town (work) tomorrow?
With the Dremel, if you find the burr is catching try rubbing some wax (supposedly tailor's chalk is the ideal but I've used candle wax before) on the cutting edges. The cutting tools can have a tendency to catch and gouge into the work piece.
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