(SD4) X axis binding in only certain areas of the bed? (vid included) (Page 1 of 2)

So when the motor is powered off and you slide it by hand, can you feel resistance in that area?

That being the case I'm gonna suggest you remove the tape off the bearings on one side.  My guess is that the y rods aren't perfectly parallel.  As the gantry moves to the rear it is pushing in on the X rods misaligning them.  You also can check that the y carriages and belts are aligned by moving the carriage all the way forward.  Then compare the distance of the X carriage as you move it all the way left to right to the front top angle of the frame.  This distance should remain constant the whole way across.

Yes, even if the bearings wobble.
Obviously you don't want them to be loose but it's better then binding.  We can use it to trouble shoot then figure a way to fix the underlying cause.

Absolutely, if that gantry isn't running perpendicular the the Y rods it will cause all sorts of problems.

Ideally you want the bearings to not move in the carriages but I suspect you've just got them a little too snug.  Once you get it to the point that you feel no noticeable resistance compared the rest, then it becomes an issue of VREF and cooling of the board and motor.

That's normal, nothing to worry about so long as it doesn't do it when the belts are on. Check VREF, if everything else is moving smoothly.

additionally..
One tning you should note about the Lawsy carriage is that the holes in the model aren't exactly in the same place on the left and right side. The rods will still go in straight and line up, but you'll notice that if you run the carriage to the front of the machine, one side will hit the idler block before the other. this is normal, the holes are spaced correctly in each model but they are offset by a few mm. If you line up the holes on a left and right carriage piece, you'll see what i mean. It can be tricky to get the X axis rods in straight and keep them straight before putting the X axis top piece on. It needs to move smoothly left and right. The Solidoodle rods are fairly low quality, consider replacing them with hardened steel or stainless steel if you can't get your bearings to move smoothly at all.

At this point I'd start by adjusting the VREF up slightly and get a fan on your board. Additionally a heat sink on that motor wouldn't hurt either.  Based on your description you have a cooling issue as it seems things got worse the longer it ran.
Jagowilson is correct about the rods, if the bearings aren't smooth you will have problems.
For that I would use my hand and exercise the X carriage back and forth until things loosen up as a temporary fix.

Ok so even with a fan on the board and fan on my X motor (huge thanks to AZERATE for sending me the printed part) I get binding from the first print. My X VREF is at the max and still binding. Then I tried to turn up the Y as well and no improvement.

certainly not as bad as before.

Is there anything else I can try? I have been also searching for similar problems and solutions, but coming up empty handed.

Ok so to gauge the torque, I take the belt off and hold the motor pulley with my finger and keep turning the VREF up until it starts to move?
Should I also start looking into a new X motor?

Ok so I took the belt off and slowly adjusted my VREF but again even at max it binds, but this time any where on the bed. BUT strange but, when I move it to the very front of the bed, it doesnt move at all, no binding or sounds. Shown in the video. When it doesnt make a sound or move, im still controlling it.

Also just to confirm, but this is the VREF right? Im sure it is, but maybe its not

Sounds like you may have a broken wire, you should be able to make it do that just by moving the wires.

Ok so I removed the X motor didnt seem to be any breaks between the plug and the motor. I opened up the motor and didnt see anything that look out of place, besides a oddly bent metal spacer. But I assume its normal since it's bent pretty consistently, but idk if its something deeper in the motor that I cant get to.