[SOLVED] I'm trying to print a tall, thin cylinder, but these rings start appearing around it towards the top. Does anyone know what could be causing this?
I've printed similar objects with a different colored PLA, but I ran out of it and switched to this.
Is it possible that this could be influencing the outcome?
I have tried reducing the printing speed by 50%, but this did not seem to have a significant impact.
[SOLUTION]
The problem was a loose screw. The offending part as well as the new result are pictured below. It's not perfect, which I guess is actually a part of the model this time, but it's good enough for my purposes and way better than what it was before.
I figured this out by twisting the Z-axis thingy manually all the way to the top to see if I could feel any issues. Towards the top, it would start to 'skip', where I would turn and pretty much nothing would happen. I assume this has to do with the lack of lube at the top because my prints rarely go that high. I checked to see if the screws were loose, and sure enough, the top one was. I tightened it up and now my printer is printing like the beast I remember!
In machining/cnc land everything is a spring. I would suggest finding a way to print it with a more rigid setup. Maybe try putting some kind of support around the cylinder part way up.
Hate to tell you but 3d printing Is not the right manufacturing process for the job
... You may have It work out but thers no reason to melt pellet plastic into a somehow precise 1.7 mm diameter wire spool so that you can make a noozle go round for hours.... Just buy a pipe ... No matter what it will be cheaper more precise and sturdier ....