Trained monkey looking to level up!

[m_c]

First thing I'm going to ask, is do you have a backup of the Mach3 config files?

The most likely thing to fail is the PC, so make sure you have a back up of all the critical files. Main one is the machine config (.ini file IIRC - it's been a while since I've used Mach3!), and the macro directory for that machine. Easy option is just copy the entire Mach3 directory to a memory stick, but upload the critical files somewhere safe as well.

Next would be to make sure you have a plan should the PC/control box fail.
Is the control box parallel port, or some form of USB controller?
I'd probably start by making a wiring diagram of the existing setup, as should something fail, it then removes a big part of diagnosing/replacing things.


Other than that, the mechanics should be pretty simple. Given it's a MD machine, they're not likely to be ideal, but should be simple to identify any problems and find replacement parts.