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  #1  
Old 05-30-2017, 07:27 PM
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Default The Rockwell Is Running

With a couple of minions du jour (Norm and Trombone Pete), I finally got the new to me Rockwell 21-100 milling machine, into the shop (akin to shoveling 5# of crap into a 3# bag). We had to move 2 welders, 3 tool boxes, a plasma cutter, a bandsaw and numerous buckets of all kinds of stuff (I'm cleaning out my late FIL's shop). After shoehorning the mill into the shop, I got it permanently wired up, trammed the head and the vise. Hopefully it will actually cuts some chips in the morning.

The ER 32 x R8 collet chuck, I got, has a .008" run out, so I made arrangements to have a new on here ASAP (hopefully Friday). I'm also digging out a set of R8 collets, from the stockpile. I'm still not happy with the height of the mill, still working on a base design.The new drawbar seems to work fine.

I have to put a 1/4" keyway in a 1" shaft, it seems like a test for the new mill.
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Old 05-30-2017, 11:37 PM
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Originally Posted by platypus20 View Post
I have to put a 1/4" keyway in a 1" shaft, it seems like a test for the new mill.
Good! I'm really looking forward to seeing more of that little mill.
Can you maybe get Norm or Pete to take some video of you running it?
That would be fun.
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Old 06-04-2017, 11:30 AM
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Since my last post, I've been busy with the Rockwell milling machine. I changed out a bad bearing in the transmission (Graingers replaced no questions asked), I installed a different drive sheave/pulley, installed 2 new LED lights and raised the mill up 4".


1 - the mill in place
2 - the 4" x 4" x 1/4" box tubing, to raise up the mill
3 - the lights, bracket attached to the "transmission"
4 - bottom of the quill is now 57" off the floor
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Last edited by platypus20; 06-04-2017 at 12:15 PM.
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Old 06-04-2017, 11:36 AM
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5 - the new speed chart
6 - the Rockwell, the Franken-Drill and the modified HF 20" drill press (also raised 4") nested together
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Old 06-04-2017, 11:43 AM
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Very handsome. I'm liking the look of those foldup handwheels more, too.
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Old 06-04-2017, 12:24 PM
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The comment, that the lights were new, is a slight lie, I'm in the process of cleaning out the rest of the late FIL's shop and barn (MIL is selling the house after 53 years), I stole the flexible goose-neck lights from the shop, threw about 90% of the light assembly away, the base, switches, wiring and bulb sockets, hit the trash. I made a new mounting bracket, installed all new wiring, sockets and plugs, basically kept the goose-necks and the shades. That and some new super bright LED spot lights, I can now actually see the work area on the mill.
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Old 06-04-2017, 12:50 PM
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I like the creative re-use of old light fixtures.
New LED machine light prices are outrageous!

What LED bulbs did you use?
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Old 06-04-2017, 02:30 PM
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That and some new super bright LED spot lights, I can now actually see the work area on the mill.
Aha! Something to inspire me to improve Mildred's visibility.
She already has the re-purposed gooseneck lamps but still has the obsolete curly bulbs that don't do much to help us.
Help is on the way.
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Old 06-06-2017, 01:05 PM
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I had to reconsider the 4" box tubing, under the mill, while raising the mill up, it also gave me some leveling issues. After about 1-2 hours of shimming and cursing, I decided to add leveling feet to the mill.

So last night, I installed some leveling feet (from a source I can not remember) under the front cross brace and a some tubing of the same height, under the back, it was a lot better, but because of the floor condition, there was still some shimming needed.

This morning I ventured out to the industrial supplier, and picked up some hardware to manufacture some back leveling feet.

2 - 4-1/2" of 1-1/4" B-7 Hardened all-thread
4 - 1-1/4"-7 2H heavy nuts
4 - 1-1/4"-7 jam nuts
2 - 1-1/8" flat washers
2 - 1-5/8" flat washers
4 - 1"-8 2H heavy nuts
4 - 1"-8 jam nuts


Welded a 1-1/4" 2H heavy nut and a 1-5/8" flat washer on the end the 2 pieces of all-thread. I then after the welding, put the pieces in the lathe and cut the bottoms of the piece, flat. Then assembled them, the welded piece, a jam nut and a flat washer.

Using the Jet toe-jack, lifted the back of the mill, removed the back cross tube, drilled 2, 1-1/4" holes in the bottom of the tube. The using the fabbed piece, put a 1-1/4" 2H nut inside the tube clamping the nut down tight and then welded it in place. After it cooled down, installed both fabbed feet in the box tubing and reinstalled it in the mill.

I went to the front of the mill, raised it up and removed the front cross tube. Removed the acquired leveling feet, with 1"-8 thread, then welded 2 of the 1" 2H heavy nuts inside the tube, making the leveling procedure easier. Reassembled the front leveling feet and the cross tube assembly and reinstalled it under the mill.

Then leveled the mill, side to side and front to back, it is now level, and rock solid, this added an addition 2" to the height of the mill, putting the bottom of the quill at 59" off the floor, but with the ER32 x R8 collet chuck, thats on the UPS truck for delivery, today, with stick out ~2" from the bottom of the quill, bringing it back down to about 56"-57", which I think is just about right.

1 - the hardware
2 - the fabbed piece
3 - in the tube
4 - ready to go under
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Old 06-06-2017, 01:07 PM
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5 - the back
6 - the front
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