MyJohnson;4147542; said:
Ive never drilled a hole for a bulkhead per say through acrylic bud, our culture is glass so very little exposure. Ive drilled with normal bits & jigged pieces of acrylic though. I found high range teeth numbering blades provides a superior finish. aka little to no heat seams. So due to my limited exposure, i'll leave your question to the experts.
To answer your other Q, You can drill anywhere you can fit & your comfortable, however in my opinion, always try to let gravity work for you. The weight of the drill is sometimes all the downward pressure thats needed to carve your hole. However once again, acrylic your asking, so as above.
As for glass, I'll drill from the top if possible, if not the side. Ive never drilled from beneath.
If you look at the below pic.You can see I made a flat sided timber bat for lack of a better word, & covered that in a rubber matting for placement on glass. 10min slap job thats come in super handy. I only bother taping the other side of the intended hole in a strip of racing tape & have a towel under that just in case. KISS method for me. Works every time.
Depending on chosen bulkhead sizing and actual placements in relation to access , its easy drilling on the fly with a hole saw the dimensions i need into the bat as my drill guide. Making it essentially a portable held jig per say (considering no arbour to keep you on track at the beginning).
I take this away once my groove is established, and presto on with the show. More often than not i'll even give the misses a water spray bottle & tell her to make herself useful with a few squeezes frequently while i pump the drill piece & talk sh^t for the next few minutes.
