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ask them WHY you need a new PC for the software you are going to get.
and let them spescify it to you why you can not use the current one.
and if it comes down to the operating system, well get one...

i see why not but thats me.
but you could mail them and ask if its possible to do what you think of.
just put in the machine and cnc table so they see what they have to work with to give you the...

the problem with plasma is that it makes a darn hard shell where it cuts.
leadins is places on a corner so it is easyer to finish.
its not that easy on a circle that it is on a square plate.

use a large suction car.
abrasive removal system: use pumps to pump out in to emty sand bags that hangs inside a "open case" whit water return to tank.
"case" just an example ->...

ask the manufactor you bought the machine from or is made.

the pump can be the dump side needle or gasket ( pakninga som nålen er i ) change them next time you guys have WJS on service ( on both pumps ).
you can do it your self but be 100% shure you have...

when did you change the gaskets on the "head" last time ( abow the abrasive head ) and needle?
needle can get "bent" if used too mutch force on it.
or it can be too mutch preshure on the "screw"...