I bought the 236 pound model from these people.

http://www.cut40.com/secure/

Not got it working under CNC yet as it wasn't bought for that but I did test it cutting on a piece of plate tight at the side of the CNC mill when it was air cutting a part to see if it affected it, It was fine which is far better than the old Cebora plasma which crashes everything electronic in the workshop when it runs.

John S.