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In The Shop Shop talk, shop tools & fixtures, shop wear, anything for the shop that is not covered in another forum.

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Old 05-20-2016, 02:30 PM
Defender Chassis's Avatar
Defender Chassis Defender Chassis is offline
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Join Date: Nov 2006
Location: Mid-Ohio Valley
Posts: 412
Louver Punch/Press

I have had the material for this project for long enough. Time to get r' done.


Thanks for watching!
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Old 05-23-2016, 10:17 AM
fabcam's Avatar
fabcam fabcam is offline
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Join Date: Aug 2004
Location: MN
Posts: 4,567
Super cool
The Designers of Bend-Tech Products
Bend-Tech Dragon web site:

Cris Merry
Phone: 651-257-8715

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Old 05-23-2016, 04:16 PM
alwaysFlOoReD's Avatar
alwaysFlOoReD alwaysFlOoReD is offline
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Join Date: Jan 2010
Location: Red Deer,AB Canada
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Use a punch and hammer to set the tube to the keyway.
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Old 05-25-2016, 10:30 AM
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Graham08 Graham08 is offline
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Join Date: May 2006
Location: Denver, NC
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I finally had a chance to watch. Very cool project!

I like your machinist buddy's idea of green Loctite. I have used Loctite 680 to fit bushings into slip fit bores, and once it sets, they don't move. 680 is good for up to 0.015" clearance. Sounds like your application would be better with 641, which is for closer fits and recommended where disassembly might be required.

The only thing I wonder about with using a band saw frame for a louver press is the section of the backbone is kind of skinny. Granted, it worked against the blade tension when it was used as a saw, but I'm not sure how the loads compare. I think that's why the Mittler Bros. plans are for such a huge frame...they rate theirs for something like 16 gauge mild steel with a 5" louver, and it's a 48" throat. I have 2" louver dies for my lever press, and the tonnage is pretty low in 0.050" and 0.063" aluminum...but it's something to think about if you get to a situation where you're doing big/heavy stuff.

Last edited by Graham08; 05-25-2016 at 10:39 AM.
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Old 05-25-2016, 01:38 PM
entropy's Avatar
entropy entropy is offline
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Join Date: Sep 2007
Location: 95-miles from the center of Oregon.
Posts: 8,379
The solution to locking the rotation of the table is too simple.
Where it is convenient drill and ream a 1/4" hole through the table mount and the Tapered tube. Precise location and angularity is not necessary only that the two pieces are solidly assembled when you drill & Ream. (note drill through not blind)
You want a press-fit on a 1/4" Dowel pin.
Presto the table is now locked rotationally can be taken apart if need be and a hand drill is all you need to do it.
Does it work?

I locked the rotational axes on my original drill press 35 years ago and have never had to adjust the table for square to the spindle since even after knocking the pins out for some angle work. Just tap the pins back in and go.

When did empirical knowledge get replaced by a theoretical education?

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