# PETG Printing Problems **URL:** \ **Category:** Snapmaker 2.0 (3-in-1)\ **Created:** [March 6, 2024, 11:32pm UTC](https://forum.snapmaker.com/t/petg-printing-problems/35208 "2024-03-06T23:32:16Z")\ **Posts on this page:** 1\ **Showing post:** 28
**Author:** ![Mxbrnr](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/mxbrnr/32/27569_2.png) [@Mxbrnr](https://forum.snapmaker.com/u/Mxbrnr)\ **Post date:** [March 11, 2024, 4:22pm UTC](https://forum.snapmaker.com/t/petg-printing-problems/35208/28 "2024-03-11T16:22:49Z")
If you are going to be running a lot of PETG, you need to consider upgrading to an all-metal hotend. The PTFE liner inside the stock heat break starts to degrade around 230-240C, with higher temps accelerating it. Eventually it will degrade enough to cause the hotend to clog, whcih is often misdiagnosed as the extruder gear slipping. It can happen in as little as 1 spool. It’s entirely possible that you may already have this problem, or that the hotend clogged during the power surges you mentioned, preventing it from being able to push the plastic through at the increased speeds of the higher layers. You can read in-depth on the issue here: > [@Hot End Clogs - The How & Why](https://forum.snapmaker.com/t/hot-end-clogs-the-how-why/30376): > > This thread is in direct reference to the Snapmaker 2.0 single extruder print head, but its concepts may also apply to other SM machines and modules. There are two primary reasons for hot end clogs… The heat break becomes clogged by filament that melted and re-solidified The heat break becomes blocked by the degradation of the PTFE liner As you can see, both have to do with the heat break part of the hot end. The hot end is made up of 3 main parts… The heat break (also known as the “throa… --- _[View the full topic](https://forum.snapmaker.com/t/petg-printing-problems/35208)._