Anyone has an idea of what could cause this vibration noise when the Y axis is moving?
I cant see the vibration well, but you did commit a capital crime and probably should be sentenced to death for making a vertical video.
@Camerin_hahn haha. well the vibration is more audible than visual.
If it is the same issue I had, it it the linear bearings getting “dry” go to a hardware or automotive store and get some white lithium grease(I use the spray) and apply that to the rods.
Check the tension on the line as well as make sure it’s not slipping. When I tried using a paracord for my extended X-axis mine would make the same sound as the line would slip. The tension was good, but the sandpaper drum was spinning a bit on the line. Once I rigged it back up to use the original fishing line the vibration like sound went away. I also think my X axis sandpaper drum is a little worn as compared to my Y axis, so that could also contribute as well.
@Tim_Sills which brings the question of what are the spec of the original line? Anyone found a source for it ?
I have used, hemp twine, yarn and other such strings, you need to address 2 probelms when using other strings, they need to grip the pulley, and they need to last. A nylon line is used by default. It cant remember the specs. Don’t use yarn. it frays before you finish your first print. Para-cord would work nicely. But if you only have noise, and no artifacts in you print, then you do not have slipping issues on the pulley
+Andre Courchesne, I don’t know the specs but thought I recall seeing somewhere that they’d tried 65, 100, and 200 lb kevlar lines.
I had the same problem with the paracord as @Camerin_hahn described in that after a few hours of print time, the line would start to fray and I’d get a shift on the axis. I’d pull my hair out when coming back after an hour or so to see what should’ve been a nice new iphone case was now printed at a 45* angle (grrr).
I think @Brook_Drumm could help you with what type of line to buy. But with any cord, you need to tighten it, then do a dry run to make sure you get the slack out, then re tension the line.
I was just looking around and it looks like there’s kevlar kite line that looks similar to what we’re using.
Tilted prints = slipping. Either on the line or the tube on the motor shaft. I glued my sandpaper directly on the shaft = no slipping there.
So I changed the line to something that is closer to ‘standard’ braided fishing line and the vibration is gone !
An other problem I found is that I has made myself a spool holder that was sitting behind and above the printer. However the rod holding the spool was not centered in the spool hold. I just noticed a few minutes ago that when the spool was turning it was making the printer head jerk up and down because of the spring action of the spool moving… The effect was that my filament kept slipping off the gear.
I like spools of cds as spools
One of the first things I’d printed was a spool holder where the spool rode on bearings. I could see the movement wasn’t very smooth and one time the spool fell off the holders. I’ve since switched to a small lazy Susan placed above and in front of the printer and have had zero issues with feeding the filament.
Don’t buy a lazy susan, just put your filament on a cd spindle with like 10 aol(or some equally useless cds) disks on it.
@Tim_Sills would love to see a picture of your installation.