Well, now your seeing why Lincoln is dumping them.
I repaired a 5x10 torchmate, and got it running for the owner.
As far as water and rusting, if you keep the water up to, and
even slightly over the part, there will not be any steam,
so the machine ways won't get rusty.
If you run water 2" below the part (to just catch the sparks) you
will get steam all over the place, and rust.
Now this mount problem, why not post a picture ?
The 5x10 I repaired had a solid mount (no breakaway) but IIRC the squareness
could be adjusted.
CAD, I had no problems bringing in .dxf files from AutoCAD, importing only into the torchmate post processor section (adding tool path program)
AFTER I got this one running, I bought a homemade project table, and fixed it.
It runs Mach3 & SheetCam and is much better to work with.
I always tried to keep the water as high as possible, but the slats that are in there right now keep the part at the very top of the water. If anyone walks by and bumps it at all water spills on the floor. I do want to replace the slats and chose the same thickness material, but a different width. No idea if it got ordered or not. Just regular stock that we cut on the iron worker (if it decides to work on that particular day. Intermittent issues are so fun to troubleshoot). The different width would mean that when they are put in the table the width is now the height from the bottom of the water table to the bottom of the part, meaning we could use less water.
I would love to post a picture and be in the shop machining a new mount, but it is summer now and the shop is closed until August. Definitely a project I want to complete when I get back there.
I can easily import DXF files into Torchmate 4 or Torchmate CAD, but neither recognize some very common things. Such as if you model half of a part and mirror it. The DXF will show it all as one, but when imported into any torchmate program you only see half. Pretty much any feature like mirror or array where you are copying geometry does this. It is easier to just throw something on the mill and use the bolt circle pattern on the DRO.
We have both a machine torch and a hand torch. The machine one is always mounted to the gantry and we just unplug it and plug in the hand torch when we need to do any cutting off the table.
A break away mount sounds like a good investment, especially when the machine has no true home position or limit switches. Though it looks like the controller may be able to have some connected easily. No idea if that would require a firmware update on the controller though. I've always wanted to hit the home button, but have been afraid to since it could run at a fast feed rate and crash.
How beneficial is it to have a computer controlled Z axis? The one on the machine is just a threaded rod with a crank on it to manually adjust the height. I used to have to practically stand over it and manually adjust the height during the cut to compensate for warping. Now it really isn't an issue with the ability to keep the material cool.
I will definitely look into sheetcam. I have heard of it before, but haven't really looked at it all myself. Software purchasing is kind of tricky at the school, especially with all of the budget issues in Illinois and the proposed budget cuts for higher education across the country.
I want to make some plasmaquench but we need to order the materials. May be justifiable to prevent rust though.
Are there any suggested starting feed rates and settings for on the plasma cutter? I understand that every machine is different, but having somewhere to start would be really helpful. I generally try to get scrap of the same material and then just do a bunch of test cuts until I find something that won't take forever to clean up on the grinder. The shop air is regulated to 90-100 PSI most of the time. I think it comes in at about 110. I think the machine is a Lincoln Electric Tomahawk 1000 with standard (not fine cut) consumables. Max current on the machine is 50 amps, it is usually around 35 for most of the cutting we do. Most of the material we cut is around .1 to .25 inches thick, usually the cheapest steel we could get.