10.5 x 25 cnc plasma table retrofit

Check under the gantry, one side has side bearings, the other does not, so the side with side bearings - use a laser to get properly straight.
The other side can be 1-2mm off and still very usable as the THC will compensate that easily.
Mind the part where two rails touch, try to get those as leveled as possible, when gantry moves over them, there should be no noticeable "jump".

Okay so im putting together a parts list to get started with this build. I put power to the driver box, tripped the contactor with a screw driver and a green light comes on the power board and fan runs. im not sure what else I could do to test it besides connecting the burny 10 back up.
So far in my parts list I have

7I83 Analog output/ analog servo interface
7I85S 4 Channel encoder, 8 differential output 1 channel Serial RS-422 interface
THCAD-300 High isolation A-D accessory (Go to replacement: THCAD2)
7I96S STEP/IO Step & dir plus I/O card

I am going to assume that I can hook straight up to the raw arc voltage of the hypertherm ht2000 with the thcad-300. Is there any advantage to a voltage divider board other then the potential risk of electrical shock? Will I need a power supply to go along with these boards? do you have any recommendations for a reliable one on my previous build I used a cheapo china one and the fan stopped working a while ago.

Get the Mesa 7i85, without the S.
And THCAD5 or 10 and 2 of 1MOhm/2W resistors, it is most probably a HF/HV pilot start plasma, and 300 is not recomended for those, although i am sure it works, i have several of those in daily use.
For power supplies, 5V and 24V, both at 5A should do just fine, MeanWell or Delta preferably.

Hey Tom good day to you, my names Tom as well BTW
(theres never enough Toms on the job! haha)
So THCAD5 would be for a divider board with a 0-5v range and thc10 would be for a divider board with a 0-10v range correct? So I will need to see what the voltage output of the divider board on my hypertherm is if there is one or purchase a divider board and wire it up to the raw arc voltage correct? I apologize for bugging you guys with so many questions but I really don't want to order the wrong components so it is very much appreciated.

Do you have the HT200 plasma?
It should have a divider, so try to find the service manual for it, Hypertherm had those always available on their website, but not anymore, now they want money for documents, but still not much, so at least they are not greedy.
Have you looked inside the HT200?
Get the THCAD5 if available, with added resistors it works with any divider or raw voltage.

Yes I have the ht2000 I briefed threw the manual did not see anything about voltage divider. I'm going to give a try calling hyperherms tech support. I asked them a few questions before and they were pretty helpful guy was telling me about how he took part in developing the system. I'm shifting the project slightly into a new direction. I decided because I have 50 foot of rails I am going to take 30 of the feet and build a overhead gantry that will ride on the rails to load and unload plate steel. I am going to set these rails parallel to the gantry rails. I really like this idea because down the road it would be very easy to convert the gantry to being powered and possibly even CNC. I can use the gear track on the rails to move the gantry in the y axis. I will need to figure something out for the x and z axis but I figured I could program it to pick up the plate steel and set it down all automatically, avoiding the danger of moving the plate steel with a crane by hand. It would also potentially be possible to hook up a electro magnet to pick pieces off the table all cnc. I found one example of somebody doing it. youtube.com/shorts/DvBW-bO678k?si=3gM8novCpRZhSCEu