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375w bench drill

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375w bench drill

Unread postAuthor: woodscout » Mon Jun 28, 2010 5:26 am

getting a new bench drill (dunno what its called) and thinking to buy Nova 16RF 375w drill. is the 375 wat enough to drill max 22mm holes to steel and aluminium?
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Unread postAuthor: Crna Legija » Mon Jun 28, 2010 8:20 am

if the chuck can fit a 22mm bit it will drill, just take it slow and use cutting cutting fluid

edit: looked it up it has a 16mm chuck so you will need to get a steped drill bit(idk its right name) or spade bits(only alu)
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Last edited by Crna Legija on Mon Jun 28, 2010 8:27 am, edited 3 times in total.
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Unread postAuthor: woodscout » Mon Jun 28, 2010 8:26 am

that was just what i wanted to hear. thanks!
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Unread postAuthor: inonickname » Mon Jun 28, 2010 8:39 am

That stepped drill is really intended for enlarging holes in sheet metal. You can buy larger diameter drills with a reduced shank size (13 or 16mm).

Image
The second one down has a reduced shank Look for these.

The reduced shank ones are most common in sizes above 13 or 16mm. Most large diameter drills you purchase individually or in a set from a hardware store will have reduced shanks.

You can plausibly drill 22mm holes with a 375W drill, but don't expect it to be quick. Take it slow and use a lot of lube.
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Unread postAuthor: ramses » Mon Jun 28, 2010 10:17 am

progressively drill larger holes. start with maybe 8mm, then 12mm, etc up to your desired size. It is amazing how well that works. I was having some trouble with 4140 the other day, and this accelerated the process by a factor of 5.

cutting fluid is always a good idea. WD-40 or kerosene is fine for aluminum. Tap-matic gold is amazing for steel and smells pretty good.
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Unread postAuthor: jhalek90 » Mon Jun 28, 2010 1:24 pm

ramses wrote:Tap-matic gold is amazing for steel and smells pretty good.


...yes it does.

But back on topic.... i used to work in a metal shop, we always drilled smaller holes first.. and enlarged them later.

This also makes the hole much easier to line up where you want them.
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Unread postAuthor: spudtyrrant » Mon Jun 28, 2010 3:37 pm

There was no useful information in this post so I put this here.....

Edited by jrrdw.
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