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Drilling 42mm Hole
prelude1980 - 9/6/14 at 07:21 PM

i need to drill a load of 42mm holes in 2mm aluminum,

Normally i'd used a stepped cone cutter but the largest i have goes up to 40mm
I don't like holesaws much as i find they tend to move around a lot.

Also i can't use a pillar drill so can only use a corded drill.

Any ideas on how to do this easily?

HowardB - 9/6/14 at 07:46 PM

cone drill, and then a file? or invest in the next size drill,. or ask a friend?

Theshed - 9/6/14 at 07:48 PM

You could use a Q Max type sheet metal cutter - loads on ebay but not a cost effective one hole solution....whereas that half round file you know you have lurking behind the tin of elbow grease...

prelude1980 - 9/6/14 at 07:52 PM

i have about 100 holes to do so that q max cutter is an idea if i can find the correct size

DIY Si - 9/6/14 at 07:54 PM

Is something like a tank cutter any good? No idea how much they are though!

prelude1980 - 9/6/14 at 07:57 PM

quote:
Originally posted by DIY Si
Is something like a tank cutter any good? No idea how much they are though!


if i had a pillar drill maybe but trying to hold that steady in a drill gun maybe a bit tricky?

mark chandler - 9/6/14 at 08:00 PM

You need one of those cutters where you have a former that pushes into a tube, like a void bush removal tool with a cutting face.

bi22le - 9/6/14 at 08:05 PM

quote:
Originally posted by mark chandler
You need one of those cutters where you have a former that pushes into a tube, like a void bush removal tool with a cutting face.


Kind of the thing I was thinking of but also dont know the name.

Its a circular cutting press that you drill a smaller hole in the middle (10mm) and then wind the two sides of the tool together from separate sides of the sheet. It then cuts the hole. Kind of like a circular tin snip. I dont know, maybe make one!

mark chandler - 9/6/14 at 08:07 PM

Like this

eBay Item

prelude1980 - 9/6/14 at 08:14 PM

quote:
Originally posted by mark chandler
Like this

eBay Item


i think that would be perfect

Many thanks for all the help

wicket - 9/6/14 at 08:48 PM

That is a Qmax cutter

BenB - 9/6/14 at 09:05 PM

Yup. That's a qmax. Grease the thread and piece of piss. I have quite a few now. Lovely things.

ashg - 10/6/14 at 09:31 AM

Plasma cutter with a compass attachment