78 fence rod threads?

[bridger berdel]

So I have a need to set up to make up some fence rods for the 78 rabbet plane. For some reason that seems to be the part most likely to go missing in action. The plane in question is pre-square notch logo, not sure what to call that, gothic script? Anyway, I have been gathering parts and now just need the rod. It's just a section of 9/32 steel dowell necked down and threaded to fit the body. Seems to be one of Stanley's famous propietary threads, though. I have a random bolt that threads in loosely which I'm pretty sure is metric. The closest in my set of pitch guages was 22tpi, but that's not it, and the diameter is off too.

I have a south bend engine lathe. I have never used it for threading, but I believe it is complete and capable of making about any imperial thread. There will be some learning curve for me, so I'd like to maximize the return on setup and make a few.

Somewhere there must exist a thread table for old stanley planes....

[Jim Koepke]

Somewhere there must exist a thread table for old stanley planes....

We can only wish. Stanley used some odd threads.

Does your gauge have a 28 thead pitch? Stanley used 28 tpi in a lot of places.

jtk

[Greg Wease]

I don't know if the threads were constant over the years but mine measures 1/4-28.

[Chuck Hart]

I just checked my 78 and its 28 tpi.

[bridger berdel]

I finally arrived at 1/4 - 28 for mine too, tonight. Found a piece of 9/32 rod, too. Now I just have to get the lathe cleared off.

[don wilwol]

http://lumberjocks.com/donwilwol/blog/24090

There is a link on this blog to 2/pdf s that explains Stanley threads

[Robert Payne]

Reproduction rods for the Stanley 78 are available from St. James Bay Tool Company (http://stjamesbaytoolco.com/). I found that link in the lumberjocks link Don provided above.

[Jim Koepke]

http://lumberjocks.com/donwilwol/blog/24090

There is a link on this blog to 2/pdf s that explains Stanley threads

Thanks Don, that is a great resource to have.

jtk