in this video we're going to drill through this tungsten carbide this piece
is approximately six millimeters or quarter of an inch thick this is come
out of a ball mill machine which is used to crush powders if you're not familiar
with tungsten carbide it is a very dense metal so it is very heavy and it's also
very, very tough if you try cutting it or drilling it you are really going to
struggle having said that it is very brittle but one of the ways that we
normally break this on site is by covering it with a cloth and then
hitting it with a hammer unfortunately you can't drill this using a normal
drill bit you have absolutely no chance of drilling through it in order to do
the drilling we're going to use a JCB diamond tech' hole saw these are
extremely good quality and are often used for very tough porcelain tiles etc
I've actually used these in the past to drill out a broken tap which is
another very tough piece of metal I will put a link to that video in the
description so in order to get this started I'm just going to start on an
angle until it bites in to the tungsten and then I'm going to tip the drill
upright so I've got that fixed down to a piece of wood at the side i've got
a tray with some water in it is recommended to cool these bits down
every five seconds in some cold clean water
and now actually got the Slug there in the center so we have actually all the way
through that so as you can see that has cut a perfect hole through there very
quickly indeed when I get this back of the computer I'll time just exactly how
long it took to drill that hole if you look at the condition of the drill bit
there is still plenty of life left in that as well I hope you found this video
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