On 4/14/2013 11:24 PM, Gunner Asch wrote:
On Sun, 14 Apr 2013 20:55:22 -0500, Ignoramus25056
wrote:

On 2013-04-15, Pete C. wrote:

Ignoramus25056 wrote:

On 2013-04-14, Gunner Asch wrote:

https://picasaweb.google.com/1040422...aTurretRebuild

Gunner


I enjoyed it greatly, but I did not understand what you did.

i

He removed a tool changer/toolpost turret from a very large CNC lathe,
took it to a shop to repair a cracked casting properly and then
reassembled it. 9" spindle bore, probably threading oil well drill
string pipe fittings or something. Probably 100HP spindle. Big MF.

OK, I got it, thanks. I usually think that if it cracked once, it will
crack again. But it was a fun project.

i

If its fixed properly..and it was..it wont crack again. At least not
in that location.



It is an ART to repair a casting that won't crack again! A big part of
that is in the pre-heat and cool-down phases of the weld. I've had
mostly good luck but a bit of bad luck. A lot depends on the metal and
the phase of Venus.