Small boiler build

[lakc]

Well, moving on, every boiler needs at least one valve, enter another of PMR's high quality casting kits.

I didnt document the valve build very well. From the first moment I read the prints I feared the long turning job on the valve stem. Lacking a steady rest or any follower setup for my lathe, I attempted the "full cut at one time towards the headstock" method with something I hesitate to call success, although it was servicable, barely. The stem did turn out quite triangular. I will have to remember that stuffup when it comes time to make a wankel.


At this point, it was time to light a fire and see what happens.

[Stuart]

The problem with the valve stem was not your method but the chuck.
There is no way a three jaw chuck will hold a part that small dia you need a collet chuck

The er type are pretty good just get the ones you need as you need them of course you will need the main chuck body

If you thick about what you posted the finished stock was triangular same number of flats as your chuck !
The part is moving in the jaws

With a collet chuck you will get it done .


Stuart