Not certain "Cast" what ?
Malluable, ductile, grey? etc. etc.
It was cast from original patterns decades old.
A 1.38" endmill start was way out of position. My guess, a collision
while travercing. Note; on one-offs, and work worth a month's wages
travence with the spindle OFF! Goes for large lathe-work too.
Babbitt and phenolic in the region, part is done.
NO preheat allowed, nor heat-build-up.
Knew it was on the schedual so had time to rehearce (in the mind).
Took pointers from several other discaplines.
I've been told over the years to get as comfortable welding while standing
as sitting doing repairs and/or tool welding. Always made excuses to avoid standing.
Had little choice so, remembering advice to brainstorm, phone-interview
and the like standing, for sharper mental focuss I went for it.
I knew I'd have to do rapid targetted peening with no helper.
A Blacksmith book from the 1800's advises a 1/4 turn pivot
no greater than one step, for moving form op to op with a peice
that cools quickly, and have your tools sittuated smartly.
So hammer, punch, and wire brush were on the bench to my left,
not on the part.
Used conventional helmet, Tiger-hood, and scratch-start and no glasses (correction)
I wanted to be in close harmony to the work so-to-speak.
I tend baddly to weld too far with tig, when a deposition goes right where I want it.
You can quickly loosen Babbitt or char Phenolic that way, SO
I discaplined my mindset and rehearced this for a while.
Peening is second nature for me, many ways, many reasons, many uses.
Welding is not; hence all this effort.
I could touch the weld after each peening. Felt no warmer than say 130 degrees.
It worked better than I ever dreamed of. Got Pics but I'm fading fast.
I can sleep now that I have unloaded my Geeked Excitement.
I'll put em up later if any interest is generated.
Cheers and G'nite.
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