06-19-2007, 10:25 AM
I bought a 37 GAL Acrylic frag tank and I need to drill out the drain hole from 1" to 2" and install the new bulkhead. The issue is since the hole is already there and there is no way to have a center guide for the core bit, how do you drill it bigger? Almost messed up one of the return holes trying to enlarge it last night but quit in time. Any suggestions from those that have worked with acrylic before? Thanks in advance!