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Old 13th October 2012, 02:31 PM   #31
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I drill a pilot hole then use a boring head on a milling machine. Don't have any punches, so have to go with what you have.
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Old 13th October 2012, 10:00 PM   #32
roline is offline roline  United States
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I found a source that has a waterjet that can cut 1/2 steel, they can use a DXF file from Autocad, so if it were to be cost effective, that would be another way.
Another source quoted around $120 for 2, laser cutting. I don't know how much slag would build in the curf.
I'm kinda twisted, those are triple triode compactrons driving 6LB6 outputs.. 12 pinners.
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Old 13th October 2012, 10:28 PM   #33
balerit is offline balerit  South Africa
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Quote:
Originally Posted by roline View Post
I found a source that has a waterjet that can cut 1/2 steel, they can use a DXF file from Autocad, so if it were to be cost effective, that would be another way.
Another source quoted around $120 for 2, laser cutting. I don't know how much slag would build in the curf.
I'm kinda twisted, those are triple triode compactrons driving 6LB6 outputs.. 12 pinners.
Laser cutting is clean, we have aircraft parts laser cut, saves time and has a real clean cut.

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Old 14th October 2012, 03:31 AM   #34
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I used a $13 stepped drill from Amazon for my first project. It worked OK. More function that finesse. If this addiction really takes hold, I'll get some punches.
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Old 14th October 2012, 01:52 PM   #35
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Roline....before you fork out that much money check and see if there is someplace that does EDM in your area. Works great on thicker material and should be substantially cheaper. Off topic, but i had 2 magazine wells cut on rifle receivers i was making. Accurate cuts and smooth as the proverbial baby's bottom. regards, J.D.
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Old 14th October 2012, 03:52 PM   #36
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There was a discussion on this before. Need a decent chassis punch set
For holes larger than 1/4 inch, I use Greenlee punch set I found used on ebay. For small holes, I use deep throat metal hand punch.
Click the image to open in full size.

The real one is $250 but I bought an imitation from ebay for $55. It's good enough for one or two projects but beyond that, it will wear out (because it's a cheap imitation). But it's still better than having to "set" the hole with set punch and possibly bend the plate and then trying to hold a drill bit in place for small holes. The hand punch produces more accurate location.
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