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rstone4(at)hot.rr.com
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 Posted: Sun Jul 30, 2006 4:41 pm Post subject: Special tool |
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list members,
On the DVD "Building a glass panel" produced by "HomebuiltHELP" I saw a tool that I am very much interested in The tool was one round flat disk that worked like an anvil. The other disc's were round and different sizes with a 90 degree flange that was very sharp. There was a center hole where a large bolt would go in and a nut w/washer on the other end. this would be placed in a sheet of aluminum with a pre drilled hole the size of the bolt and when the nut and washer were tightend it would make a perfact hole to mount an aircraft instrument. This is by far the best system I have ever seen for making instrument holes and I would like to get one. Do any of you have any idea who stocks this tool.
Bob Stone, Harker Heights, Tx
Zodiac XL (Not too far along)
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p.mulwitz(at)worldnet.att
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| Posted: Sun Jul 30, 2006 5:12 pm Post subject: Special tool |
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That sounds a little bit like a Greenlee punch. These can be bought in many sizes to make perfect round holes in sheet metal. Alas, they cost the Earth. They are very popular in the electronics industry (where I spent a significant number of years), but perhaps a bit expensive for home builders to buy.
Paul
XL fuselage
At 05:40 PM 7/30/2006, you wrote:
| Quote: |
list members,
On the DVD "Building a glass panel" produced by "HomebuiltHELP" I saw a tool that I am very much interested in The tool was one round flat disk that worked like an anvil. The other disc's were round and different sizes with a 90 degree flange that was very sharp. There was a center hole where a large bolt would go in and a nut w/washer on the other end. this would be placed in a sheet of aluminum with a pre drilled hole the size of the bolt and when the nut and washer were tightend it would make a perfact hole to mount an aircraft instrument. This is by far the best system I have ever seen for making instrument holes and I would like to get one. Do any of you have any idea who stocks this tool.
Bob Stone, Harker Heights, Tx
Zodiac XL (Not too far along) |
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d.goddard(at)ns.sympatico
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zodierocket(at)hsfx.ca
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craig(at)craigandjean.com
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| Posted: Sun Jul 30, 2006 7:46 pm Post subject: Special tool |
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$300 for the 3 1/8" punch from AS&S.
www.aircraftspruce.com/catalog/topages/knockout2.php
Borrow one from your local EAA chapter if you can. Or use a fly cutter. For best results use it in a drill press and cut a test hole in scrap to check the size adjustment.
-- Craig
From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Robert L. Stone
Sent: Sunday, July 30, 2006 6:41 PM
To: Zenith List
Subject: Special tool
list members,
On the DVD "Building a glass panel" produced by "HomebuiltHELP" I saw a tool that I am very much interested in The tool was one round flat disk that worked like an anvil. The other disc's were round and different sizes with a 90 degree flange that was very sharp. There was a center hole where a large bolt would go in and a nut w/washer on the other end. this would be placed in a sheet of aluminum with a pre drilled hole the size of the bolt and when the nut and washer were tightend it would make a perfact hole to mount an aircraft instrument. This is by far the best system I have ever seen for making instrument holes and I would like to get one. Do any of you have any idea who stocks this tool.
Bob Stone, Harker Heights, Tx
Zodiac XL (Not too far along)
| | - The Matronics Zenith-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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jean-paul.roy4(at)tlb.sym
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| Posted: Mon Jul 31, 2006 1:42 am Post subject: Special tool |
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Robert, Averry tools has a punch that bear both sizes (3.125" and 2.25") on the same tool for $140.00.
http://www.averytools.com/p-234-panel-master-instrument-hole-punch.aspx
Hope this helps
Jean-Paul
| Quote: | Original Message -----
From: Robert L. Stone (rstone4(at)hot.rr.com)
To: Zenith List (zenith-list(at)matronics.com)
Sent: Sunday, July 30, 2006 8:40 PM
Subject: Special tool
list members,
On the DVD "Building a glass panel" produced by "HomebuiltHELP" I saw a tool that I am very much interested in The tool was one round flat disk that worked like an anvil. The other disc's were round and different sizes with a 90 degree flange that was very sharp. There was a center hole where a large bolt would go in and a nut w/washer on the other end. this would be placed in a sheet of aluminum with a pre drilled hole the size of the bolt and when the nut and washer were tightend it would make a perfact hole to mount an aircraft instrument. This is by far the best system I have ever seen for making instrument holes and I would like to get one. Do any of you have any idea who stocks this tool.
Bob Stone, Harker Heights, Tx
Zodiac XL (Not too far along)
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