![What could be causing these horizontal lines/bumps/ridges? Printing ABS on an Ender 3 with the classic cardboard box enclosure 100° bed, 235° hot end. : r/FixMyPrint What could be causing these horizontal lines/bumps/ridges? Printing ABS on an Ender 3 with the classic cardboard box enclosure 100° bed, 235° hot end. : r/FixMyPrint](https://i.redd.it/l1dh8siyo7151.jpg)
What could be causing these horizontal lines/bumps/ridges? Printing ABS on an Ender 3 with the classic cardboard box enclosure 100° bed, 235° hot end. : r/FixMyPrint
![Horizontal lines (2 lines) almost at a specific height - Ultimaker 3D printers - Ultimaker Community of 3D Printing Experts Horizontal lines (2 lines) almost at a specific height - Ultimaker 3D printers - Ultimaker Community of 3D Printing Experts](https://content.invisioncic.com/ultimake/monthly_2016_06/20160618_021032.jpg.7cf9ab6ae14a87b3dffc69a1d7d2daa6.jpg)
Horizontal lines (2 lines) almost at a specific height - Ultimaker 3D printers - Ultimaker Community of 3D Printing Experts
![3D Benchy Issue: Horizontal lines evenly spaced around the print – Assembly and first prints troubleshooting – Prusa3D Forum 3D Benchy Issue: Horizontal lines evenly spaced around the print – Assembly and first prints troubleshooting – Prusa3D Forum](https://forum.prusa3d.com/wp-content/uploads/2020/09/IMG_20200919_145909.jpg)