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Need Some 8" Round Stock Cut - Calgary

Easy fix I use a magnetic broom with the pull to release handle they work a charm but the always magnetic ones are a pain though. PA has them on sale every once in a while.
 
Getting close now.....

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This is where I screwed up last time. I need to open that slot up 3/16" or less. Enough for today.
 
Now what to do????

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This is so close to the tolerance I was hoping for that I'm afraid to put it in the mill for one more pass.
 
Actually check the channel for squareness too. Cast iron shouldn't stress relieve much if any (as in the lips came in a couple thou). But kind of depends on the material, heat aging, material removal profile etc.
 
I can measure it up tomorrow with the corresponding dimension of the bar it rides on. I screwed up the bolt hole /
It is 0.050” off centre due to not compensating for the edge finder - ugh! Works fine though.
 
Brent H said:
I can measure it up tomorrow with the corresponding dimension of the bar it rides on. I screwed up the bolt hole /
It is 0.050” off centre due to not compensating for the edge finder - ugh! Works fine though.
Click to expand...

Should be the same size as my bar. Yours came from a 9" Utilathe. Just curios as neither looks like the image in the manual, which looks to be a casting with machined surfaces.
 
I took my “block” from a 16” utilathe that had the block at work. Just “guessing” on the scale -but seemed to work well. Will send you off measures
 
Some dimensions- just with the verniers

00BDCBB3-E333-4472-88A2-486B3F7A5FCF.jpeg

EF6FE59D-582C-4F63-804E-720AB89A5B2C.jpeg

BCE03966-449A-4015-957F-38C703C51696.jpeg

2800A38E-FCC6-47DA-A33C-5D4ADC1D068F.jpeg

9C0D2A5C-6555-4CA7-86B4-23A805B13082.jpeg

DB491B81-40AA-4EFC-9864-01BBF36BE676.jpeg

looks like 1.5 thou clearance on the bar - no movement so may be a bit tighter than that - slides nice.
 
My bar appears to be 1.186" wide by 0.693" high. I'm starting to think I don't know how to measure things properly. Neither of those values makes sense even in metric?
 
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IIRC, the bar was ground. So if they cast the slider block and machine the U-shape to 1 3/16”(1.1875) and take nominal cold rolled 1 3/16” bar (which would measure a bit oversize) and surface grind the bar, they could end up with a bar width of 1.186” for a nice sliding fit in the block.
 
There will be some clearance needed once the block is bolted to the cross slide extension- the slot in the block has the side grooves for oil/gunk.

my bar measures 1.374 x 12.000 and 0.694 thick

here are the block dimensions:

CD4FFA58-C367-413A-9F4A-396B4CD6D2D7.jpeg

It is a snug fit under the cross slide extension:

5252DB35-FC28-43AD-B6E1-4D3B6F09C78F.jpeg
 
Hi Craig, following your thread with lots of interest nice work however, somewhere along the way I missed out on what your project is.

From your latest photos I assume you're making a taper turning attachment for you lathe so you can reproduce tapers?

Thanks for hitting the like button, appreciate that.
 
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