Zee Needs Popcorn

[Stuart]

Sure it’s not metric as your lathe I think is not old iron ,

5/16 and 8 mm are very close but not quite ,but if you make both it can be what ever you like

Have fun and be safe

Stuart

[zeeprogrammer]

Sure it’s not metric as your lathe I think is not old iron ,

Nope, not sure. I used a tool to measure the threads and they look 20/in which seems to imply imperial.

But that's why I'm taking the good bolt/nut to the store with me.
It actually doesn't matter which system so long as it fits.
Have to be careful though. If I have to get another nut...it can't be too thick, although I guess I could machine it down.

I haven't investigated thoroughly but it does seem some bolts/nuts/screws on the lathe are imperial while others are metric. Same for the mill.

[Jasonb]

Most likely M8 x 1.25.

That is a pitch of 1.25mm which equates to 20.3tpi so would look similar to a 20tpi imperial screw.

Also worth looking at the parts diagram at the back of the manual as they usually give all screws / bolts as M# x length

[Tennessee Whiskey]

+1 on what Jason said. I’ll have to say that all the “fixing bolts” on my Grizzly are pretty soft.

E

[zeeprogrammer]

M8 x 1.25...not 5/16 x 20. I was close! 

I checked the manual. It does call out M8 (bolt and nut) but not the thread pitch nor the length.

Good thing I took the old one in.

I got both hex cap and machine bolt. But tghe hex doesn't have enough meat on it. The machine is fine but the sides have to be slightly trimmed.

  2mm too short. I'll have to go back. Hope they have longer and then trim them.

[Tennessee Whiskey]

Wonder how come you have to make two trips to get anything done  . Think about it

Eric

[zeeprogrammer]

Wonder how come you have to make two trips to get anything done  . Think about it

I'm doing well at two trips and my single trip frequency has been increasing. It used to be three - no matter what.

Got the last package of bolts.  This store is close enough I can be there and back well within an hour. Other stores would double the time.

[b.lindsey]

As Whiskey said, the main issue I have with the imports is the softness of the hardware. We had the same issues with all the JET mills and lathes at school. Students can be notoriously rough on such things too!!

Bill

[zeeprogrammer]

Back up and running. 

A little mill work got me a functional bolt. Could have been done with a hack saw and file...but I like using my tool.

Picture for proof.

Re: softness of hardware. Yes, I'd noticed that on my mini(s) and new equipment as well.
I'm fine with it. I'd rather they let go (fail) before something more valuable does.

Now I've got an extra bolt for next time.

[EDIT] I didn't shave the sides as much as the original. I'd rather have more meat to press against.

[propforward]

Nice save!

[zeeprogrammer]

Thanks Stuart.

I like to think I'm helping (newbies anyway).
I remember when I started this hobby. Had this happened then, I'd feel lost, frustrated, and perhaps fairly upset.
This forum and a bit of experience has made many changes in me. (Some good...some not so good  )

[propforward]

You are. And getting some encouragement in the process, which us newcomers need.

[zeeprogrammer]

Manufactured sometime after sunrise but before 5:00pm. 
Finished the oiler for the crosshead guide. In between which was the repair to the lathe.

Two things (problems) to note...

1st is that I don't have the equipment to make tiny holes. So the holes for the oil is a bit large. Not a biggie. This engine isn't going to run for long periods of time.
"Not a biggie" 

2nd, the top doesn't sit flush with the bottom. That was a bit of surprise given the dimensions I was working towards. But I'm kind of liking the look anyway.

1st pic is the two parts to the oiler. You can tell the hole in the cap is a bit large. Same size hole going into the crosshead guide.
2nd pic shows the oiler installed. You can see how the cap is not flush with the bottom. But seems to look okay to me.

It's after 5. You shouldn't expect anything from me. 

[10KPete]

Nice! Keep 'er goin' Zee.

 

Pete

[Mike Bondarczuk]

Hi Zee,

If you undercut the top of the thread and then perhaps shorten the overall length of the externally threaded stub you should find that the oiler will fit flush with the recipient component.

Mike