Drilling holes in stainless steel can be
incredibly difficult because it can work
harden as you're drilling it. This is
316 stainless which is
non-magnetic which is one of the hardest
stainless steels that you can actually drill.
It's not very thick it's probably only a
couple of millimeters wall thickness but
it is still incredibly difficult to
drill. If you try and make a hole in this
using a traditional hole saw it will
burn out very quickly you would even be
lucky to get through the stainless steel
at all. For that reason I'm going to use
one of these which is a Starrett  Carbide
tipped hole saw . These are incredibly
good quality. One thing I will point out
with these is that you do need a very
powerful drill to be able to use these.
I've actually tried using these in my
pillar drill and that won't actually do
it it just keeps jamming and stalling
all the time. So I'm going to use the
trusted old Dewalt
and I've put the side handle on because
there will be a lot of torque because
these bits do bite very aggressively.
The beauty of these is that once you've
drilled your hole the spring in the
center there actually ejects the center piece
which with most hole saws actually gets
stuck in the middle then you have to
mess about removing it. So these are an
incredibly good design and these are
superb for stainless steel. You can
actually cut stainless steel up to an
inch thick using these hole saws.So I'm
just going to center punch where I want
the hole to be, that will prevent the
bit from slipping when I'm starting to
drill the hole. I've now set the drill to a
law speed and I've got it on number 19
torque setting that will prevent the
drill from snagging when it is cutting.
I'm just going to apply some cutting
paste to the drill bit at the end there
and that will keep that cool whilst we
get the pilot hole drilled.
You can see that that has cut a clean 1 inch hole in that 316 stainless
steel which is approximately two
millimeter thick wall thickness. So that
is a very tough piece of metal to drill
if you tried doing that with a traditional
hole saw you would really struggle you
probably just burn it out. But the Starrett
Carbide tips hole saws are absolutely perfect for that type of job. I  hope you've enjoyed
watching this video and if you haven't
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