Doepfer

Just before I dive in, does anyone have advice or experience of
drilling through doepfer module faceplates? I want to put an extra
switch across jumper J1 of my a112 to switch the LP filter in and out
(I quite like digital artefacts). Should I go through the palaver of
removing all the electronics boards first? Should I really though? And
will my cheapo dremmel-clone go through the aluminium quickly and easily?