I drive heavy truck and try to fix my own junk as much as I canWell I tried again today, a 3” section of 3/4 joiner nut in the chuck and a internal pipe wrench with a breaker braced against the base in the other end of the spindle. Then used a 1/2” impact on the joiner. No luck.
It’s a really old lathe that came from a farm, had bird leavings on it so I assume it wasn’t a dry heated shop. I suspect it was put together dry decades ago and has Mother Nature’s loctite in the threads now.
I’m pretty familiar wth getting stubborn stuff apart as I run a heavy truck shop, but I’m trying to be gentle here. It’s soaking in penetrating oil now, I’ll spray it down regularly for a bit and try again.
If it was a truck part I would have counted to ten with the 3/4 gun rattling, then reached for the sparkle wrench if it wasn’t moving or broken off yet. But I don’t think that would have been productive here...
Sent from my iPhone using Tapatalk
Zamak has a pretty good expansion rate (ie:fast) as you probably have already experienced. Many of the v-belt pulleys we think of as aluminum are actually Zamak, and you know that it doesn’t take much to get them on or off a snug shaft. However, a word of caution: Zamak will melt at around 700F, so go gentle.know what the Zamak does when it’s heated and cooled?