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Posted by on July 29, 2008, 3:37 pm
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I need to make a two inch hole near the center of a four foot square
3/16" steel plate. It doesn't need to be perfect, could be slightly
irregular. Would a cutting torch be OK, or would the heat permanently
distort the plate?
What other methods would work? A plasma cutter sounds good to me, but
I don't have one. I guess I could take it somewhere and pay to have
it done.
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Posted by Joe AutoDrill on July 29, 2008, 4:39 pm
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>I need to make a two inch hole near the center of a four foot square
> 3/16" steel plate. It doesn't need to be perfect, could be slightly
> irregular. Would a cutting torch be OK, or would the heat permanently
> distort the plate?
>
> What other methods would work? A plasma cutter sounds good to me, but
> I don't have one. I guess I could take it somewhere and pay to have
> it done.
Best option: Very large radial arm drill press... Find someone with one.
Has to have a 24" or greater throat.
Second best: Magnetic mount drill with an annular cutter - See
www.hougen.com or a similar manufacturer.
Third best: Really good geared down, two hand hand drill with a hole saw,
annular cutter, etc. Lots of prayer...
They might just make hole cutters for electrical panels that work too...
The kind you drill a small hole for then put a device that "shears" it's way
through as you tighten it like a bolt...
Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills: http://www.AutoDrill.com
Multiple Spindle Drills: http://www.Multi-Drill.com
V8013-R
** Posted from http://www.teranews.com **
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Posted by Martin H. Eastburn on July 29, 2008, 10:57 pm
Please log in for more thread options That could be watercut cnc job -
That could be lasercut cnc job -
That could be Plasmacut cnc Job -
The plasma would slice through - and if kept moving wouldn't distort
the plate. That small hole in a big plate won't give much possibility
for a warp.
Circle cutting is typical (drill press), but you need a deep throat.
Plasma torch can be guided between or around (inside is best) a wood circle.
Lots of ways.
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/
Joe AutoDrill wrote:
>> I need to make a two inch hole near the center of a four foot square
>> 3/16" steel plate. It doesn't need to be perfect, could be slightly
>> irregular. Would a cutting torch be OK, or would the heat permanently
>> distort the plate?
>>
>> What other methods would work? A plasma cutter sounds good to me, but
>> I don't have one. I guess I could take it somewhere and pay to have
>> it done.
>
> Best option: Very large radial arm drill press... Find someone with one.
> Has to have a 24" or greater throat.
>
> Second best: Magnetic mount drill with an annular cutter - See
> www.hougen.com or a similar manufacturer.
>
> Third best: Really good geared down, two hand hand drill with a hole saw,
> annular cutter, etc. Lots of prayer...
>
> They might just make hole cutters for electrical panels that work too...
> The kind you drill a small hole for then put a device that "shears" it's way
> through as you tighten it like a bolt...
>
> Regards,
> Joe Agro, Jr.
> (800) 871-5022
> 01.908.542.0244
> Automatic / Pneumatic Drills: http://www.AutoDrill.com
> Multiple Spindle Drills: http://www.Multi-Drill.com
>
> V8013-R
>
>
>
> ** Posted from http://www.teranews.com **
----== Posted via Pronews.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.pronews.com The #1 Newsgroup Service in the World! >100,000 Newsgroups
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Posted by John Martin on July 29, 2008, 11:40 pm
Please log in for more thread options wrote:
>
> Circle cutting is typical (drill press), but you need a deep throat.
>
> - Show quoted text -
And if the throat isn't deep enough, you can set the drill press on
the plate, clamp it, swing the head out to the side and drill away.
John Martin
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Posted by Winston on July 29, 2008, 6:01 pm
Please log in for more thread options mark.lauritsen1@gmail.com wrote:
> I need to make a two inch hole near the center of a four foot square
> 3/16" steel plate.
Don't pay more than 16 bux.
http://www.acehardware.com/product/index.jsp?productId=1285836&cp=&sr=1&origkw=HOLE+SAW&kw=hole+saw&parentPage=search&searchId=30057612773
Use a big drill motor, cutting oil, be patient and stay under ~170 RPM.
--Winston
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> 3/16" steel plate. It doesn't need to be perfect, could be slightly
> irregular. Would a cutting torch be OK, or would the heat permanently
> distort the plate?
>
> What other methods would work? A plasma cutter sounds good to me, but
> I don't have one. I guess I could take it somewhere and pay to have
> it done.