I want to drill some 7/8" holes in some 1/4" thick aluminum.
I was planning on using a hole saw, but then found I had a 7/8" masonry
drill. Would that work, or is the hole saw a better bet?
Do I lubricate the surface, or just cut dry?
of course a metal bit would work like a charm
but i owuld try the hole saw first
i feel like a mason bit would only superheat that area and weaken that
if it even cut / it might work
you got a 7/8 mason bit? dang, that's a farily hefty bit, and we all
know the tip can be sharp.. it might get you through 1/4" maybe drilli
from both sides..
I woiuldn't worry bout no oil, or cooling the bit
but a splash of water on the metal might keep it from getting to hot if
your bits are dull
For cutting aluminum a twist, hole saw, spade bit or forstner bitt will
work.....I've used all of these with good results. Any cutting tool
(carbide preferred) that gives decent results with wood can be used
with success in aluminum (slow, steady feed & sharp tool)
Luckily your material is not that thick.
If your work piece is held down well, clamped or fixed to soemthing,
just have at it. Only the twist drill would need a smaller pilot. The
hole saw, spade bit &
A masonry bit is not a good choice, they're meant for brittle
materails, esp if it is a bit for a rotary hammer
If the choice is masonry bit or hole saw.......use the hole saw.
Hole saw, WD-40 for lube, medium speed if available, stop for nothing other
than going to the next hole, many holes put a piece of wood or another piece
of aluminum under the bit if in a drill press so you don't have a big burr
or an airplane prop on the spindle of a drill press. 30 year machinist if
that makes a difference.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.