Hi Everyone.

I am a newly retired D&T teacher of 25 years with a lot of CNC experience namely Boxford cnc routers 3D printers and laser cutters.
I have acquired an old[ E5 redasil laser with an issue of water protection. After paying someone a lot of cash to look at it he obviously was self taught and had no idea.
I would be grateful if someone could point me to the relevant thread so that I can attempt to fix it myself.
Thanks for any help

Dave