How to drill A 50mm Hole
How to drill large holes in metal using a hole saw
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it can be difficult cutting larger
diameter holes in metal especially when
you are at home you don't have a massive
drill press we're going to use this
small bench drill to drill through some
5 millimeter mild steel plates and we're
using an awl source to do that if you've
got a variable speed pin the drill you'd
need to set it on to a law speed you do
not want it going fast when you are
using all saws you can see that I've put
a piece of sacrificial wood underneath
salsa once we go through the metal we're
not going to damage the base of the
pillar drill you'll also notice that
this piece of metal is actually jammed
up against the pillar at the back so if
the actual also does grab all of the
metal and spin it's not actually going
to go anywhere and I've also got two
good-quality clumps on there and they
are both very tight indeed so that metal
is now firmly fixed to the drill we can
now proceed to make me all through it
this hole is going to be about 26
millimeters or an inch and an eighth
when you do this you're going to need
quite a lot of cutting fluid or coolant
because if you don't put cutting fluid
on these all soils they do burn out very
quickly so I just and I'm going to set
the machine going and we're going to
carefully go through the steel
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so you could see them take too long to
get through there it did struggled the
machine did Jam a couple of times but
this is a very weak on drill press so
it's not real up to the job but you can
actually use it for drilling large
diameter rolls in steel
