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Old 04-23-2017, 12:19 PM
David Paule David Paule is offline
Join Date: Dec 2009
Location: Boulder, CO
Posts: 3,613

It's a bit off the topic of this excellent hole-finding method, but I've found that two strong flat magnets do a great job holding pieces of aluminum together in places where clamps can't reach.

Mine are 1/2" diameter and about 3/32" or 1/8" thick.

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