StrayAlien
Cast Iron
- Joined
- Aug 18, 2014
- Location
- Melbourne, Australia
Hi all,
Greetings from Melbourne, Australia. This is my first post in this forum. I've been looking for a BP for some time now that wasn't a silly price and wasn't 1000+ klms away. I recently scored a 'not working, condition unknown' 1981 BP from auction. Turns out the main belt was broken so I was lucky there. Nevertheless it is getting a complete teardown and refurb where needed (and affordable). Top end rebuild kit from HM is on the list.
The machine is metric with 5mm pitch leadscrews. The metric nuts are silly prices so I'll likely make them.
Does anyone know if the stock 5mm pitch leadscrews are 29deg acme or are actually 30deg trapezoidal?
Failing actually knowing that I am guessing grinding a threading tool to match an unworn portion of a screw is a good, if maybe inexact, solution.
Many thanks,
Greg.
Greetings from Melbourne, Australia. This is my first post in this forum. I've been looking for a BP for some time now that wasn't a silly price and wasn't 1000+ klms away. I recently scored a 'not working, condition unknown' 1981 BP from auction. Turns out the main belt was broken so I was lucky there. Nevertheless it is getting a complete teardown and refurb where needed (and affordable). Top end rebuild kit from HM is on the list.
The machine is metric with 5mm pitch leadscrews. The metric nuts are silly prices so I'll likely make them.
Does anyone know if the stock 5mm pitch leadscrews are 29deg acme or are actually 30deg trapezoidal?
Failing actually knowing that I am guessing grinding a threading tool to match an unworn portion of a screw is a good, if maybe inexact, solution.
Many thanks,
Greg.