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Author: Subject: Drilling 42mm Hole
prelude1980

posted on 9/6/14 at 07:21 PM Reply With Quote
Drilling 42mm Hole

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?





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HowardB

posted on 9/6/14 at 07:46 PM Reply With Quote
cone drill, and then a file? or invest in the next size drill,. or ask a friend?





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Theshed

posted on 9/6/14 at 07:48 PM Reply With Quote
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...
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prelude1980

posted on 9/6/14 at 07:52 PM Reply With Quote
i have about 100 holes to do so that q max cutter is an idea if i can find the correct size





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DIY Si

posted on 9/6/14 at 07:54 PM Reply With Quote
Is something like a tank cutter any good? No idea how much they are though!





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prelude1980

posted on 9/6/14 at 07:57 PM Reply With Quote
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?





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mark chandler

posted on 9/6/14 at 08:00 PM Reply With Quote
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.
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bi22le

posted on 9/6/14 at 08:05 PM Reply With Quote
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!





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mark chandler

posted on 9/6/14 at 08:07 PM Reply With Quote
Like this

eBay Item

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prelude1980

posted on 9/6/14 at 08:14 PM Reply With Quote
quote:
Originally posted by mark chandler
Like this

eBay Item


i think that would be perfect

Many thanks for all the help





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wicket

posted on 9/6/14 at 08:48 PM Reply With Quote
That is a Qmax cutter
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BenB

posted on 9/6/14 at 09:05 PM Reply With Quote
Yup. That's a qmax. Grease the thread and piece of piss. I have quite a few now. Lovely things.
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ashg

posted on 10/6/14 at 09:31 AM Reply With Quote
Plasma cutter with a compass attachment





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