I had all my hopes that this would be my solution to the overheating warn msg, I did my test of two thin rectangles at 1mm depth, one horizontal and one vertical to measure the result and get the scale factor, but in the end it made some strange movements and the 4k warn msg on two motors every time Z moved 0.5 mm, so I repeated the file this time without turning on the router and without a cutter and in the video you can see the undulating movements and how the machine accelerates and decelerates,
so I gave up on continuing with the cut and decided to take the machine apart again because it still showed an off-center point of 7mm.
While I was taking it apart I saw that when I turned the Z motors all the LEDs on the machine lit up and since the error appears when they move, it made me wonder if this is returning voltage or causing some interference¿?
First magnet installed on its roller but I thought of hitting it against the metal sheet and it came out without a problem, I think it could turn with the work and give a bad reading,
I continued with the remaining arms and oh surprise two more magnets out of place, I go for the last one that I had already re-glued a few days ago and it also came out by hitting it lightly against the sheet (I don’t know if my gel glue from the kit is damaged or if I really don’t put enough), by God, the four magnets are loose.
Now I put a lot of glue on the bottom and sides
I removed a motor to check if the U-pin was still rubbing, but this doesn’t happen anymore.
Whenever I take the arms apart, I try to leave the straps rolled up on the spool and not move them so that when I put them together they don’t loosen, but I realized that the spools were so tight that the neck where they join was tightened and doesn’t let them spin freely,
and I’m pretty sure that this is the problem with the msg warn 4k, it gets so tight that it doesn’t spin, so I released the straps to put them back on manually and I had the great idea of greasing the belt path and they were very smooth. I assumed this was the problem, assembled it and went to calibrate with the .85-1 upgrade that I hadn’t managed to do before, I started with 3x3, 5x5, 7x7 and everything was fine with a 1.02 fitness level, although when I tightened the belts they squeaked strangely and I thought it was because of the lubricant applied, in the 9x9 calibration it showed me errors of a few millimeters when I got to the furthest points of the lower corners and the belts opposite to these points were without tension at that time, but it finished the calibration with a fitness level of 0.6 and I decided to stick with that to continue with the cuts.
Since I have to work in the center of the frame, I want to adjust my XY home and although it says it was adjusted but it always goes back to another point when I release and apply tension, the belts squeal at each tension, it doesn’t take the new home, I give up changing it and I adjust my cut to the center that the machine decides.
First cut wonderful, second cut and a msg warn 4k when making Z an entry and it damages the cut but I let it continue, it keeps working and increases the number of msg warn 4k every time Z moves, I think about not paying attention to it and continue with my cuts, but it keeps showing the error in several motors just by making Z home, I think it may be that the reels have been tightened and I don’t want to take everything apart again, so I lowered the retraction tension from 1300 to 100 to extend all the belts completely and then retract them and big surprise that the belts of the upper motors were torn from the base
and I had wound them manually and I know they were fine before lubricating…
This is my theory, it all started several days ago when tension was lost in the trot and we tried to increase the retraction and calibration force to correct it, thinking it was a lack of force in the motors, but I think it is rather excess force and the reels did not allow the belts to enter well, increase the force only made it worse and now that I lubed where the belts go through there was no tension build up on the whole roll and the tension was transmitted entirely to the end of the belt and caused the tear, so my next test will be with less retraction tension, this time it will be 1100.
I already washed the belts and reels to remove the lubricant, this would all be more fun if every time I take it apart I didn’t have to remove the hot glue from the connectors.
I’ll try again tomorrow, but this time I think I found it