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Old 19th November 2004, 09:21 PM   #31
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Quote:
Grainger carries individual punches and parts for them too.
But does not accept PayPal...
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Old 19th November 2004, 09:44 PM   #32
Coulomb is offline Coulomb  England
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I punch 4 inch holes in .375 Aluminum for fans with my Hydraulic Greenlee. Its like cutting butter with a hot knife

Anthony
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Old 20th November 2004, 05:20 AM   #33
arnoldc is offline arnoldc  Philippines
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I use BRADRAD stepped drill bits which is available from either Farnell or RS Components.
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Old 20th November 2004, 11:23 AM   #34
cedus is offline cedus  France
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I read your thread yesterday night.
I was greatly interested as I was still wandering how to cut the holes for the tubes of my valve buffered gainclone.
So yesterday night I ordered a Punch Hole at Radiospares I received this morning (I am always amazed by their efficiency).

And in 2 minutes my holes were cut. A very very nice job looking professional for 25 euros !!!

So thank you to everybody. I just wish I saw the post about the QMAX post before because they sell them at Farnell for 10 euros each !
But I am still happy with my Greenlee and I am sure I will still have it in 30 years !

Edit : Just for info it was two 25 mm holes in 3 mm thick aluminium panel. And it was easy like cutting butter !
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Old 20th November 2004, 11:30 AM   #35
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Quote:
Originally posted by mjounot
Greenlee tools are ridiculously expensive.
Have you got a subscription to the Princess Auto sale flyers?

Greenlee punches can be had as low as $40 to $80-a-pop during their big sales (far cry from their $150 to $220 regular price)

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Old 20th November 2004, 12:07 PM   #36
SY is offline SY  United States
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Cedus, your point is a good one- I bought my Greenlee punches in 1967, have used them to build hundreds of amps, preamps, transmitters, receivers, and Zeus-knows-what-else, and they still work beautifully. At this point, I think the investment has amortized out to less than a penny per hole.
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Old 20th November 2004, 12:58 PM   #37
markp is offline markp  United States
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I use Greenlees here at work to make holes for BNCs, XLRs, and sub-D connectors in rack panels and bulkheads. They are worth their price and some. To get a professional result use them.
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Old 20th November 2004, 05:06 PM   #38
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I'm not sure if these good prices, but here are some Greenlee knockout punches, on sale from irvan smith, from 31 to 355 USD.

http://www.irvansmith.com/catalog2/p..._punches.shtml

rgds
yac
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Old 20th November 2004, 05:48 PM   #39
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Guys,

Mouser Electrnics has a good selection of hole punches at reasonable prices.

http://www.mouser.com/index.cfm?&han...&N=0&crc=false

If that link doesn't work just click here and search for hole punches:

www.mouser.com/

Lowes here in the US did carry them, but the last time I was there they were clearance items. Darn it! Maybe Home Depot carries them.

Wayne
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Old 20th November 2004, 06:44 PM   #40
DIAR is offline DIAR  Finland
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Someone here recommended this:
Click the image to open in full size.

My thanks to that person. The drill works like a charm!

Believe or not but this drill was excellent for drilling 2 mm aluminum. It took a while but result was perfect!
Click the image to open in full size.

A photo of the plate that I drilled is attached. As you can see I had to adjust the drill about +/- 0,1 mm. I think this kind of drill is one of the few drill types that can be adjusted that accurately.

AND REMEMBER TO USE OIL WHEN DRILLING !!!
Attached Images
File Type: jpg unfinished.jpg (48.5 KB, 301 views)
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