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  #21  
Old 10-29-2021, 07:29 PM
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Originally Posted by milomilo View Post
You beat me to it.
Cleaned it up a bit
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  #22  
Old 10-29-2021, 10:39 PM
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Just wondering, that piece won’t fit inside the bore of your headstock? If not your setup is reasonable for what you’re doing.

If it does, then I would have slid it in and skipped the steady rest.


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  #23  
Old 10-30-2021, 09:41 AM
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Originally Posted by greywynd View Post
Just wondering, that piece won’t fit inside the bore of your headstock? If not your setup is reasonable for what you’re doing.

If it does, then I would have slid it in and skipped the steady rest.


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Nope, won't fit the spindle bore. Also I'm assuming a few tries to make the part I need with nothing to copy.
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  #24  
Old 10-30-2021, 12:25 PM
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Originally Posted by OldRedFord View Post
Nope, won't fit the spindle bore. Also I'm assuming a few tries to make the part I need with nothing to copy.
So you have more stock than you need to make one good part? If so cut one of them off enough to clean up the ends and practice making a good part and put in your mind you only have enough to make 1 good part.

It is a good mental exercise, because you may well wind up with only enough to make 1 good part.

It helps to make up a drawing even if on a sheet of notebook paper and think through the process from largest feature to smallest.

After all, a lathe and milling machine mostly make little ones out of big ones.

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  #25  
Old 10-31-2021, 05:12 AM
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Personally I hate ‘copying’ parts. Is a diameter fussy due to a bearing fit, or is it wide open tolerances. Does the finish need to be good, or is it something that is going to be painted. A lot of quesrions that are a guess at best.


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  #26  
Old 10-31-2021, 09:11 PM
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Originally Posted by greywynd View Post
Personally I hate ‘copying’ parts. Is a diameter fussy due to a bearing fit, or is it wide open tolerances. Does the finish need to be good, or is it something that is going to be painted. A lot of quesrions that are a guess at best.


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I thought I was the only one who had questions like this. Boss will give me a messed up part and say he needs a new one. I want to know what’s it for, tolerances needed to be held to, and maybe even actual sizes if it is worn out, and I cant figure out if it was a metric size or imperial size.

The more info I know about it, then I can make more educated decisions on how it needs to be finished.


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  #27  
Old 11-01-2021, 05:32 PM
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Originally Posted by toprecycler View Post
I thought I was the only one who had questions like this. Boss will give me a messed up part and say he needs a new one. I want to know what’s it for, tolerances needed to be held to, and maybe even actual sizes if it is worn out, and I cant figure out if it was a metric size or imperial size.

The more info I know about it, then I can make more educated decisions on how it needs to be finished.


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Picky, picky machinist ... My younger son is one. Tolerances, RA finish, etc. I talk a good fight but it's hard to keep up. I love it. Keeps him off the streets for sure.
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  #28  
Old 11-02-2021, 04:25 AM
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Picky, picky machinist ... My younger son is one. Tolerances, RA finish, etc. I talk a good fight but it's hard to keep up. I love it. Keeps him off the streets for sure.
I thought machinists were supposed to be picky, that's why they make their dainty little hammers as projects.
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  #29  
Old 11-02-2021, 05:10 AM
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I thought machinists were supposed to be picky, that's why they make their dainty little hammers as projects.

I did a nice drawing of a hammer I wanted to make when I started my machinist job 4 years ago. I have yet to make it though.

Maybe one of these years, I will get round to it.


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  #30  
Old 11-02-2021, 12:46 PM
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The set-up men on Brown and Sharp automatics had a "Set" of hammers. All the tooling was held by clamps. To adjust them .002 took a smaller hammer than a .010 adjustment. That and having just the right "Touch".
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