A friend and I have recently gotten in to refurbishing Disk Systems, we redo the belts and troubleshoot issues. Recently a lot of the games we have bought end up with bad blocks and are useless. We're trying to work on reviving them since some are rare. Any help with a disk copier would be great, it doesn't matter what type. Can do a trade for rare stuff or cash, thanks
I have a disk copier, but sadly it's not for sale.
This sort of equipment (at least the old stuff from the 80s / 90s) is extremely hard to find. I have been looking for years for more of this, with little luck. On the other hand, Super Famicom copier equipment I have stumbled upon time and time again.
If you have a suitably modified drive and an adapter cable, you can use the FDSStick to write disks:
http://3dscapture.com/fdsstick/
http://www.famicomdisksystem.com/tutorials/fds-repair-mod/power-board-write/
I have a Super Game Doctor 4M. PM me if interested :)