Hi PK owners out there. I have a query.
But first some background. I bought my PK (PKA 800 of 1945) in 2015. It came with two mitres - and it soon became apparent it had some accessories from a second PK (the second being a 1955 machine). Originally PKA 800 was not supplied with an extension for the sliding table - but when it came to me it had an extension table (just the table - no stand, no long fence). I made up a box for the extension and put it aside (no room in my garage workshop for the extension). However, recently I managed to pick up a PK sliding table extension complete (extension, stand with angle, long fence, and pivot for same).
When I tried the long fence I found the pivot wouldn't screw into my sliding table. the pivot has a 5/8" BSW 11tpi thread, while my table only has a 9/16" BSW 12tpi tapped hole .
Similarly, the main mitre pivot pin on mine wouldn't stay in the pivot hole. Initially I thought the thread had stripped. But when I tried the pivot pin of another PK (the one I got the extension pieces from), it screwed in perfectly. So I measured my mitre pivot pin as being 9/16" BSW 12 tpi, while the hole in my table has a 5/8" BSW 11tpi tapped hole.
No, I didn't put the wrong pin in the wrong hole .
However, IIRC Jack has said the mitre pivot hole is 1/2" BSW (12tpi) on his. So there seem to be a whole bunch of wrong size holes in my sliding table. Here's what I've got:
Blue circles indicate 1/2" BSW (12 tpi) threaded holes;
Yellow circles indicate 9/16" BSW (12 tpi) threaded holes; and
Red circles indicate 5/8" BSW (11 tpi) threaded holes.
I believe the red holes should be 1/2" BSW (blue), and the yellow holes should be 5/8" BSW (red). I've spoken with a friend in Australia and that's what he's got on both his old PK (PKA 390 of 1937) and his newer PK (PK 1892 of 1956).
Can I ask if anyone else has anything different?
Cheers, Vann.