How to drill A Hole In A Stainless Steel Sink
Drilling Large Holes in Stainless Steel the Easy Way
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here's a short video I put together that
may help someone out that needs to make
some large holes and stainless steel I
sure would have liked to have seen
something like this before starting our
faucet upgrade the kitchen faucet in our
condo was over 30 years old and the
faucet stems kept going bad every couple
of months and it cost a lot to replace
it was adding up I decided to upgrade to
a dura pullout RV style which fit
perfectly into the small stainless steel
sink but it had a different hole pattern
so I decided to cut some new holes how
hard could that be it turned out to be a
little harder than I thought the
stainless steel on the older sink it's a
little tougher than I expected I first
started out with a bi-metal hole cutting
bit but after 20 minutes of cutting and
not making much progress I'm looking
like I was making a mess I realized that
I needed to try something else out
there's nothing wrong with this bit it
just wasn't working out for the
stainless steel as you can see I called
the maintenance manager for some advice
and he recommended a graduated step
drill I had never heard of that before I
made a quick trip to the local hardware
store and sure enough they had some
various sizes I picked up a titanium
coated bit from bosch this self-tapping
bit steps up and can drill several holes
sizes I placed it in my drill chuck and
tightened it down good with safety glass
on and a small bottle of milling oil I
started the seemingly impossible task
again to my happy surprise it was much
easier with the new step bit I applied
oil often while drilling and took my
time letting the bit do the work without
forcing it
the bit did get hot and smoked a little
but I kept applying the light milling
oil backed off a little and continued
drilling with each hole size level it
worked best to back off even more on the
pressure or the bit tended to grab and
got stucked a couple times once I got
used to that it was easy
on to the next hole I used a punch to
help start the hole but this drill is
self tapping and it started very well
the smaller holes went much faster and
were much easier to do
the bit makes very smooth holes and you
can deburr by drilling lightly from the
other side I cleaned up each hole
further with a round stone on my dremel
tool next the faucet gasket feeding the
assembly opposes through the main hole
and tightening down the Holding nuts to
the faucet
I hooked up the water supply and the
sink works perfectly I hope this helps
you in some way I'm planning some more
projects with stainless steel and now I
shouldn't have any problems doing them
and I won't dread doing them either
