I’m not competent enough to weld it, should I tack it and send it out ? Is it better to weld it between centers to avoid shifting , is tacking it before sending it out going to cause problems ?
What would make me comfortable would be the mating parts not shifting out of alignment from heat, maybe I’m being unnecessarily cautious about it moving.If you do decide to weld, What ever you do, Do not ground you lathe, Ground your shaft or as close to your weld as possible. Logic being is you might arc your ball bearings or cylindrical roller / taper roller bearings in the headstock.
You will get 1000 different approaches from the members on this forum, In the end do what makes you feel comfortable.
Do not ground you lathe, Ground your shaft or as close to your weld as possible. Logic being is you might arc your ball bearings or cylindrical roller / taper roller bearings in the headstock.
Like you said in your post earlier, usage is going to be a factor.“Most” driveshafts don’t need to be balanced. Is it a good idea? Sure, but it’s extra money, too
So I suggest you unplug the lathe and pull any fuses it might have.
it came out fine, I did tack it, had a pro weld it, checked runout, no movement. After everything gets shaken down with the drivetrain running while on blocks, both front and rear drive shafts are going out for balancing.shorten it at the rear u joint if there is concern about breakage, no pole vaulting that way