PlasmaCam makes a 2 x 2 unit that is basically stripped (as compared to its larger units. It has a motorized z axis, but no torch height control (operate it manual with a switch) and has no CAD drawing software. Needs a table with slats and a fume control system....you can import parts in .dxf format (from most CAD programs) and cut. This unit is called Go Torch (
www.gotorch.com) and is priced at around $3k. You can upgrade to height control, advanced CAD software and advanced machine control (I recommend it all) and the price will be in the $7k range.
Torchmate also has a 2 x 2 stripped machine in the $3500 range. No motorized z axis, no slats, needs a table and fume control. Imports .dxf files similar to the PlasmaCam. If you add the height control and software you will be in the $8k range.
These are the two big sellers in the industry. You can go to
www.candcnc.com and look at their electronics, drives, motors, torch height control, software and cable offerings...and build your own machine. This method will get you into a 4 by 4 machine with all the best features for less than about $5k.
You can also buy a machine frame from
www.precisionplasmallc.com and bolt up the candcnc components and be cutting with a 2 x 2 or 4 x 4 for under $6k.
There are a lot of low cost finds online.....issues there are very little support and hard to find parts, etc.
4x4 machine equipped with good software and height control will start in the $12k range.....without plasma and fume control.
20 years ago you could not buy a cnc plasma for less than $40k. The above prices are the result of breakthroughs with software for motion control that allow the use of a PC or Laptop as the cnc control for plasma cutting...as well as the development of non high frequency start plasma cutters (thanks Hypertherm!)
Attached are pictures of a 2 x 2 Go Torch.....it is just the top of this machine...the base is a fume control unit, slat bed that eliminates the smoke and fumes from cutting. This one also has been upgraded with the advanced software, machine control and height control.
Jim Colt