Well, almost same "problem" herre, having a CPE2 the bought as used and not knowing how long it will last, I looking into building one my self.
I will use a old printermotor, a stepmotor a simpel driver to control it an haveing total control of the motor( direktion, speed, time) from the PC. Also include a waterpump for circulation and a more exact temp. and a heating element that can be controled hopefully from the PC.
I'll be useing the attatchment to the JOBO drums from the Old.
Found that a new or old is to expencive... and like the challenge to build a my own.
Good luck with this project. Please keep us posted of progress.