I have a major issue of PLA wrapping with parts where some overhang printing is needed. The worst case is with circle shaped holes which are located in XZ or YZ plane. The first half of circle is going well but when the circle sides are coming closer together PLA is wrapping in the edge and the printing surface is not even any more and printer will often miss some steps when nozzle hits on it during it's travelling over it. I believe wrapping is caused by thermal shrinking when pla temperature is going down. Problems started when diameter of circle is more than 15mm and this will happening even I switch cooling fan off. Have you had problems with circle holes? Are you using supports, will it help? Is it common to do travel command without lifting Z-axle? Should I use some heater instead of cooling fan in the case of circle holes? :) I'm using Huxley where X and Y-axles are powered by NEMA14 motors so maybe with NEMA17 this will not be as big issue as it's now. I'm slicing my models with Cura. https://reprap.org/forum/read.php?262,452554,452554#msg-452554 Mon, 12 Oct 2026 04:37:38 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?262,452554,453084#msg-453084 https://reprap.org/forum/read.php?262,452554,453084#msg-453084 Jimmybuckets Printing Fri, 09 Jan 2015 12:26:06 -0500 https://reprap.org/forum/read.php?262,452554,452738#msg-452738 https://reprap.org/forum/read.php?262,452554,452738#msg-452738 tmorris9 Printing Thu, 08 Jan 2015 16:00:48 -0500 https://reprap.org/forum/read.php?262,452554,452612#msg-452612 https://reprap.org/forum/read.php?262,452554,452612#msg-452612 Marco R Printing Thu, 08 Jan 2015 11:56:08 -0500 https://reprap.org/forum/read.php?262,452554,452554#msg-452554 https://reprap.org/forum/read.php?262,452554,452554#msg-452554
Have you had problems with circle holes?
Are you using supports, will it help?
Is it common to do travel command without lifting Z-axle?
Should I use some heater instead of cooling fan in the case of circle holes? :)

I'm using Huxley where X and Y-axles are powered by NEMA14 motors so maybe with NEMA17 this will not be as big issue as it's now. I'm slicing my models with Cura.]]> topias5 Printing Thu, 08 Jan 2015 10:05:37 -0500