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Plasma is great but you have to run it in the right direction because it make what they call kerf angle from the swirl of the gasses....so one side is flat and the other side if the cut has a slight angle on it....the thicker material the more kerf angle kinda looks like this...... I/ Weter Jet is better
We have got a plasma attachment with our table but haven't taken the time to set it up. Some weekend I need to though, I be sure to check the direction of the cut when I go to cut something though, I wouldn't of known otherwise.
I have a plasma/router combo table and am happy with it. I use the router mostly.
Running a plasma cutter has many issues that are sometimes overlooked. You will need a large 2 stage compressor with an excellent dryer. 2 60amp 220v dedicated breakers are required (1 for the plasma cutter and one for the compressor). Plasma cutting is very messy. The metalic dust will get everywhere (including the operators lungs if not careful). Do not consider one without voltage height control. Kerf width can be controlled by tip selection. The hypertherm has fine cut tips that work great on thinner material up to 3/8".
It is a great tool if you can combine it with welding expertise in your shop. You will be amazed at the tools and projects you can fabricate.
On the router side we use porter cable variable speed routers and either exported dxf files from flexi or V-carve software. V-carve is a neat cnc software package that was only $500 and has awsome support.
Yea if you plan to do alot of plasma cutting (which work awesome if you want to make stainless steel signs) you will need to invest in a water table. It has points that you set the material on and you can control the water level with air pressure!