Table Tube Locking Knobs

[dusty]

I few days ago someone here on the forum posted some photos that showed 520 table rails. It appeared that maybe Shopsmith has made a change. A change that I should have made long ago because I have always been dissatisfied with what I have.

To the point: Are these the knobs that are now on the newer 520 tables?

My 520 Table Rail locking knows

20200723_094109.jpg (1.13 MiB) Viewed 4177 times

[chapmanruss]

Dusty,

I just upgraded a 505/510 Main Table and Extension Table to 520/M7. Below is the knobs I received from SS. They are the same as most of the Knobs I have on 520/M7 Tables already. I couldn't find the right size locally, darn Covid19.

520-M7 knobs.jpg (197.61 KiB) Viewed 4175 times

[dusty]

Dusty,

I just upgraded a 505/510 Main Table and Extension Table to 520/M7. Below is the knobs I received from SS. They are the same as most of the Knobs I have on 520/M7 Tables already. I couldn't find the right size locally, darn Covid19.

520-M7 knobs.jpg

Thank you, Russ. These are what I had seen. I can probably find these in the SS online catalog BUT would you please provide me with the part number. I don't want to order new ones only to get more of what I have.

[chapmanruss]

Dusty,

They are P/N 515859 Knob with Stud and are the minimum SS price of $4.95. The springs are P/N 518462 Spring for Tables M7, 520 and $4.95 if you need them also. I could not find anything close to replace the those springs locally here either.

I should have added a picture of the other knobs I have on my 520 tables but I didn't even look at them yesterday when I took the previous picture. Below is a picture of the plastic knobs that came on my November 2001 Mark V 520. It is a full set on the Main, Extension and 2 Floating Tables.

520-M7 Knobs 2.jpg (220.77 KiB) Viewed 4105 times

They look the same as the one in the picture you posted although I cannot tell for sure what that knob material is. The knob part on mine are black plastic, like the current ones.

[reible]

I broke one of my nice rounded knobs and order a replacement and spare from Shopsmith. They sent the newer star knobs.

For me this new knob is a pain to use. Yes a real pain. Arthritis in my thumbs bothers when I use it. I swapped it to a less used extension table so I could have the "nicer" knobs on the main table.

I have not found a replacement but then I haven't spent the time but I wish I had all of the older style. If I ever do find one I get a half dozen so I will have replacements for the rest of my life, the kids, well they will be on their own....

Ed

[thunderbirdbat]

It should be fairly easy to find knobs in the style you prefer as the stud is 1/4-20 x 3/4". The 3/4 inch conical compression springs on the other hand, may have to be a special order from a fastener store.