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Old 11-14-2011, 06:06 PM
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Default Milling Adapter Plate

About mid morning, I look in on the site and thought there was a camera in the shop and people were watching what I was doing. The thread from Nick, http://www.shopfloortalk.com/forums/...ad.php?t=31605, and his bandsaw plate, was almost exactly what I was working on in the shop. I had made adapter plates for the milling machine table, to hold odd shaped items to be milled. I lent out the last one for a quick job, about 4-5 years ago, to a guy that is no longer alive, so I finally wrote that one off. Saturday, I picked up a 12" x 14" x 1/2" steel plate from the ASME boiler shop, at about 7:30 am this morning, I started the plate. I laid the plate out with 1/2"-13 threaded holes, in 1" square grid, that gave me 120 threaded holes. Drilled all of (120) 7/16" holes with a single Jancy Slug cutter (annular cutter) and tapped all of the (120) holes with a single high quality, 1/2"-13 3 flute, spiral point tap.


1 - the 12" x 14" x 1/2" steel plate, with the grid laid out
2 - drilling the holes
3 - all of the 120 holes, drilled in the plate
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Last edited by platypus20; 11-14-2011 at 07:37 PM.
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Old 11-14-2011, 06:10 PM
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4 - tapping the holes, with the Jet JDP 20EVS/230
5 - finished plate
6 - the finish plate, with test pieces shown


I still have to square up the edges and round the corners, but pretty much done.
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Old 11-14-2011, 06:32 PM
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Nice job that's gonna come in real handy. Is that cold rolled plate?
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Old 11-14-2011, 06:41 PM
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Looking Good, I wish I had went with the 1 inch grid instead of the 2 inch on mine.
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Old 11-14-2011, 07:36 PM
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Quote:
Originally Posted by digr View Post
Nice job that's gonna come in real handy. Is that cold rolled plate?
Digr

Its a piece of certified tube sheet metal, a piece of the cut off, after a pressure vessel repair.

Quote:
Originally Posted by Nick View Post
Looking Good, I wish I had went with the 1 inch grid instead of the 2 inch on mine.

Nick,

Its not too late to back and do a slight modification, you know, a Mark II or Adapter 2.0
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Last edited by platypus20; 11-14-2011 at 07:51 PM.
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Old 11-15-2011, 07:18 PM
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Plate is done as far as I'm going to go. The edges are square, the corners are rounded and all of the holes have been checked. According to the surface plate, its very flat, I may send it out to be ground, a friend can do it in about an hour for $50, he was here today and looked at it, he said he would do it, but is probably flat enough for what I'm going to need it for.
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Old 11-15-2011, 07:31 PM
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Holy plate, Batman. That is nice.
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Old 11-15-2011, 09:28 PM
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About ten coats of gray paint & you'll be all set.
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Old 11-15-2011, 09:36 PM
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Quote:
Originally Posted by cutter View Post
About ten coats of gray paint & you'll be all set.
I'll put it in a USPS Flat Rate Box, you put the first 7-8 layers on then, I'll "touch it up", after you ship it back
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Old 11-15-2011, 09:55 PM
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Nice job on the plate.

That would have been a good workout for your new tapping head while it has a warranty.
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