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Design help for Myford style saddle stop

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old mart09/02/2023 16:21:26
4655 forum posts
304 photos

I am thinking of a variation on the 254 stops which can be locked at any point along the bed rather than a bolted on fixture at the left hand end. The fixed type would be more suitable for a shorter lathe, the Atlas is 24" between centres. I made two for the museum's Smart and Brown model A to go either side of the saddle, but they fit on the inverted vee of the bed and are simpler to design.

DiogenesII09/02/2023 19:30:54
859 forum posts
268 photos

Another variation. Sorry 'bout the awful contrast.. ..a couple of collars so that you can insert calipers / pins / blocks between collar and body adds usefulness img_2073.jpgimg_2072.jpg

Edited By DiogenesII on 09/02/2023 19:31:44

DiogenesII09/02/2023 19:37:24
859 forum posts
268 photos

Harold Hall Saddle Stop for the Lathe

Hopper09/02/2023 23:11:07
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7881 forum posts
397 photos

Diogenes, I like your simplified version with the hacksaw slot instead of a separate moving piece. Very clever in its simplicity.

ega09/02/2023 23:28:56
2805 forum posts
219 photos
Posted by Hopper on 09/02/2023 23:11:07:

Diogenes, I like your simplified version with the hacksaw slot instead of a separate moving piece. Very clever in its simplicity.

I agree!

Dan Gelbart on YouTube calls this a "flexure".

DiogenesII10/02/2023 06:40:18
859 forum posts
268 photos

I wish I could claim my own ingenuity for that one, but I think it might have also have come from HH, or an article in MEW 'back in the day'..

Cutting the slot off-centre and using screws of different patterns are style innovations of my own however..

I'm afraid much of my own tooling is made 'for my eyes only'..

old mart10/02/2023 18:45:38
4655 forum posts
304 photos

I have milled a block of aluminium in a similar fashion to Diogenes II one, but I hadn't thought of the "flexure" design and may have left the gap too wide relative to the bed width. I will find out tomorrow when I go back to the museum. The collar on the rod is also a useful thought.

bernard towers12/02/2023 19:20:23
1221 forum posts
161 photos

Martin, Hemingway stop works fine on my pcf super 7

Martin Kyte12/02/2023 19:43:30
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3445 forum posts
62 photos

Just had a look on the site and they do say it's a new design so all well and good then

Martin

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