Layer shifting?
Hi Guys,
Ive been printing some cylinders as pictured below in an 2x3 array. I have noticed that on each of the cylinders I am seeing this witness line.
It might be on the x axis for 1 part and on the y axis for a different, but each part has some form of this line and it usually is broken up like something shifted. Its never in the same location or even the same layer across each part. Its intrinsic to each cylinder throughout the print.
My question is do you think this is due to belt tension? How can I combat this scenario?
Thanks!
Best Answer by Neophyl:
That looks like the layer seam. It’s where a perimeter starts/ends on each layer. It’s a normal part of fdm printing. You can minimise it by properly tuning your printer and filament. The slicer has settings for seam placement, normally on the default settings it will try and hide the seam in corners but on a cylinder there aren’t any. The position will be influenced by the other geometry in this case which is why it moves around.
You can change the settings to rear or aligned or random too (but random is not very at the moment). Rear or aligned makes it easier to post process, ie sand away.
Also your part needs support on that bottom sections as you can’t print a curve in mid air by bridging which is why it’s drooping so much and looks bad.
RE: Layer shifting?
That looks like the layer seam. It’s where a perimeter starts/ends on each layer. It’s a normal part of fdm printing. You can minimise it by properly tuning your printer and filament. The slicer has settings for seam placement, normally on the default settings it will try and hide the seam in corners but on a cylinder there aren’t any. The position will be influenced by the other geometry in this case which is why it moves around.
You can change the settings to rear or aligned or random too (but random is not very at the moment). Rear or aligned makes it easier to post process, ie sand away.
Also your part needs support on that bottom sections as you can’t print a curve in mid air by bridging which is why it’s drooping so much and looks bad.
RE: Layer shifting?
@neophyl
Thanks for the feedback! That makes more sense now with that explanation.
As for the bridge, yes that needs some work and thanks for pointing out that its nearly impossible to bridge on a curve. I hadnt thought about that.
I have been playing with some settings and I think that I some improved results.
Thanks again!