You can quench in water if you like but it's not necessary to quench the copper when annealing it. I normally do so I can handle the part sooner but sometimes I flame anneal a bunch and leave it to cool on its own. There's no metallurgical reason to quench.How do we anneal copper? Actually, it is the complete opposite to steel in that you heat it up until it gets a greenish hue and then plunge it into water.
It is, with a collet chuck on a back plate it gives you capacity up to and over the standard Myford spindle capacity, I use ER40 which gives me capacity up to and above my custom Super 7 30.5mm through capacity.The ER system may be good too, but I have never tried that.
It's good when a man knows his limitations, even when he falsely foists them upon his lathe ;-)Hi
Running a lathe in reverse with a threaded spindle is like driving down the wrong side of the road. Sooner or later, it is going to end in tears.