The C6B is a crap lathe.
It does have a tumbler reverse IF you are prepared to remove the drive
pulley to swap gear over at the back.
The variable electronic drive is a waste of time, useable low speed is
around 250 rpm, below that it stalls if you piss on it.

I had one that I fitted a two speed poly vee drive belt system to in
an attempt to make it more useable.
It made it 100% better but 100% of crap is still crap.

There is no substitute for mechanical speed reduction that increases
torque unless like the big boys do and over spec the motor by a factor
of 7 or greater.

John S.