Overhaul of my SB 9A

[steamer]

OK this week, I'll be sending my bed out for grinding hopefully this week,,,,,as long as work doesn't get in the way.

Dave

[steamer]

OK!    The bed has been ground!   It should be here on Friday....then the fun begins! 

The bed was a mess.   There was .007" of wear on the front way....the rear way was higher than the front way...which means it was machined that way in 1951...Neither of the saddle ways were straight and the gib way....the one underneath on the back of the bed that the saddle gib bears against was out of parallel by .003".   Additionally the V ways were not 90 degrees.

But all the flaking was there! .....which means it was machined...and flaked.., but not scraped for alignment...ever!

So much for Southbend quality!.....

All has been corrected...everything...I've been told .....is parallel to .0004" over the 54" length.

That'll do

Now the scraping begins....saddle first.

I have some mods to do to the saddle and the tailstock...and the bench...patience.


Dave

[Sic Semper Tyrannis]

Who ground it?  What was turnaround?  Can you share price?

[RotarySMP]

While you are waiting for it to return, you could build a wooden chuck carrier, so your don't ding that beautiful bed during a chuck change

http://www.homemadetools.net/images/3/handmade_chuck_carrier.jpg

http://www.practicalmachinist.com/vb/attachments/f38/11731d1234044888-lathe-chuck-how-big-can-i-hand-mount-000_0649-1.jpg

[steamer]

The grinder was Forest City Grinding, Rockford Illinois.

His prices are VERY reasonable.....but not cheap.  ( 500-1000)

However, I'd say they are far more reasonable than some I got quotes from 

If you contact him, have your act together and know what you want.   He's very busy.

I found him extremely easy to work with.

You have to find your own way to ship back and forth.

Dave

[steamer]

Thanks for the pictures and reply Rotary!


I plan to use a piece of plywood like I usually do...which should suffice.   I might mention my 12" logan has chucks heavy enough to use a cradle though

Dave

[RotarySMP]

Looking forward to seeing photos of the the newly ground bed.

[steamer]

Looking forward to seeing photos of the the newly ground bed.

Me Too!    shipping is delayed.....Monday!

Dave

[Rob.Wilson]

Dont no how i missed the start of this thread 

first rate job Dave 

Now this is a true machine overhaul showing how it really should be done ,i am sure you will be rewarded a hundred fold by the work and attention to detail you have put in .

what make of marking dye are you using ?

Rob

[steamer]

Hi Rob,

Here you go.

It's water soluable and readily available.    E S Dyjek

Dave

[steamer]

Here's the bed....need to check it but it sure looks nice!









Dave

[RotarySMP]

Nice!