Hi guys, Im turning to you after researching almost all alignement related topics and ytb videos and I just cant get it right. So yea I have as I read here classic fourth corner, but thing that I found out with my makeshift reverse alignement tool is that also my the dot from laser pointer travels and making loops around the near and far corner of the X-axis (M3 to M2). I tried thightening laser head or loosening and rethigtening belts but dot isnt stable, could there be some bumps on the actual rail or something? Should I buy a new rail?
I´m kinda despared, I ofc bought this Vevor 80W 70x50 cm from a vision of very friendly price, yet it came to bite me right back into my time cos Ive been trying to get it working properly almost ever since I got it.
First alignment, was kinda ok, then I noticed that the axis are not perpendicular. So I went to fix that, had to pull apart my Y axis gantry to manualy turn it to somewhat accetable angle. I did that and now this not sure if it was from the start or happend during my “maintanace” but I´m pretty bumed about it.
It’s difficult to tell if this topic is about the use of the reverse alignment technique or how to tweak a machine that has slides out of square or plane.
On the reverse alignment mirror alignment. it’s great to see that Ross posted a video. He posted a part 2 bottoms up video that actually described the process. I fully support using this process. I believe it’s much faster than the adjust and test fire method.
Well here some pics of what I’m talking about. The ones where the dots kind meet are at the end and the other is right after I start travel from one side to the other. I’ll post some video and share link here so you can see exactly. And it doesn’t look like much but it really is
So it appears that the laser pointer coming from M3 drifts along M2 as you move the X axis. That means the beam is not traveling parallel to the X axis. Just adjust M3 until the dot doesn’t move. Then move M2 until the dot is centered in the mirror. Similar process M2 to M1.
I also never use tape. You should be able to see the laser pointer on bare mirrors.
Also my experience is that you don’t need to get everything exact. Some drift is acceptable. I would have no problem with the videos amount of dot drift over the range of motion.
So I did watch them and gotta say that Ive never seen more detailed guide awesome. I went back to tápe method and I manage to get M1 and M2 visibly fine but the far corner is like 4,5mm off the near corner diagonally to the up right and I’m just not able to correct it on mirro 1 as described small movements doesn’t do anything and big adjustments ofc destroys whole process. And it just moves along with the slight adjustment. And no matter how I set(move) M1 this 4,5 mm stays there
