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Old 15th Mar 2021, 12:29 pm   #3
Join Date: Feb 2009
Location: Chesterfield, Derbyshire, UK.
Posts: 3,008
Default Re: Enlarging an existing hole in a steel chassis.

I did come across this problem , for future ref you can buy the correct base , to enlarge the hole I use a stepped drill bit, apply a squirt of wd when drilling ,I had eight to do on this Rock Ola amp all good fun , Mick.
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