I finished assembling my 1000mm X Carve a couple days ago. It was doing amazing until yesterday. I noticed the cuts started drifting about 1/8" up and to the right. Grabbing a square I found the X axis had become out of square with the Y axis. Everything is square and level except for the left gantry plate where it meets the makerslide. I have included pictures of the left and right below. I am pretty overwhelmed and could use any input from the community.
You’ll notice that when the motors aren’t on that there is flex in the x axis. That is the time to put it square to the Y axis. Then turn the motors on. The motors will hold it in that position through the program you run. One guy here uses a couple blocks of wood as a gauge to do that. He sets them in front of the riser plates.
when you move your carriage to the middle and back of the machine do you get the same results? it appears you have a bow from the riser plates to X axis. Typically if you make sure your machine is square you can resolve the issue similar to what you are seeing. PawPaw or Phil Lunsford has a good video on it but I am not sure this is what your problem actually is.