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Bmyers
07-20-2008, 09:54 PM
I picked up a nice 9" Junior South Bend today and it is lacking a thread dial. What gear is needed to ride on the lead screw to make my own dial ?

J Tiers
07-20-2008, 09:56 PM
Any crummy gear that has 2x or 4x the teeth as the TPI of the screw, and the tooth spacing to fit. In your case, 16 or 32 teeth.

All it has to do is turn with the screw, no special precision needed, although it won't hurt any.

torker
07-20-2008, 10:34 PM
Here ya go... 32 teeth/3* "angle" on the teeth
http://bbs.homeshopmachinist.net/showthread.php?t=9978&highlight=threading+dial

Mike Burdick
07-20-2008, 10:37 PM
bmyers,

If you want, I have an AutoCad drawing for a thread dial that uses the SB gear. I designed it for a different brand of lathe but the dimensions can be modified so it will fit on a SB. If you post or send me an email address I'll get it to you. It's in pdf format. I'll even show you how to make the markings very easily - no special tools either! It'll be a fun project for you. I'll also show you how to make the oil fitting at the top.

http://img.photobucket.com/albums/v157/MikeBurdick/combined_dial_pic-1.jpg

Mike

Herm Williams
07-21-2008, 11:34 AM
Mike
I would appreciate a copy
Thanks
hermwill@cox.net

Bmyers
07-21-2008, 12:32 PM
Mike,
email sent,
thank you

recoilless
07-21-2008, 01:26 PM
B:

If you want to make one, more power to ya. However, Check w/ Joe B at Plazamachinery.com. He has loads of SB parts above/beyond what is listed on his website pdf.

dp
07-21-2008, 01:54 PM
bmyers,

If you want, I have an AutoCad drawing for a thread dial that uses the SB gear. I designed it for a different brand of lathe but the dimensions can be modified so it will fit on a SB.
Mike

Nice looking dial, Mike. What are the details behind the marking?

Mike Burdick
07-22-2008, 11:11 PM
Herm and Brent,

I emailed you the information...If you don't receive it please let me know.

Thanks,

Mike

Bmyers
07-23-2008, 05:13 PM
I have to make one, I spend all my money just to buy the lathe :D

Bmyers
07-23-2008, 09:25 PM
What pitch gear would I need for a home made thread dial ?

garyphansen
07-23-2008, 09:30 PM
Go over to the PM site, look under the South Bend section for a thread "Thread Dial Kits, Any interest?" In that thread you will find every thing you need to know to make you own thread dial. Gary P. Hansen

panchula
07-23-2008, 09:51 PM
The 9" SB Junior that I started with had a 16 tooth gear on the thread dial. The 9" Junior has much more in common with a SB 10L (heavy 10) than the more common 9" Workshop lathe.
Change gears are 16DP rather the the 18DP on the Workshop series.

-Mike

Bmyers
07-25-2008, 10:38 PM
Would a thread dial from an Atlas lathe work ? I see they are more available and affordable on ebay