# Can't change filament - clog? **URL:** \ **Category:** Hardware\ **Created:** [November 28, 2019, 11:18am UTC](https://forum.lulzbot.com/t/cant-change-filament-clog/7062 "2019-11-28T11:18:19Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mtarallo](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/mtarallo/32/9724_2.png) [@mtarallo](https://forum.lulzbot.com/u/mtarallo)\ **Post date:** [November 28, 2019, 11:18am UTC](https://forum.lulzbot.com/t/cant-change-filament-clog/7062/1 "2019-11-28T11:18:19Z")
Hi guys - I am really starting to dislike this printer. In the beginning (about 1 year ago) all was well but now I am plagued with problems. I am on my 4th printer after issues with clicking stepper motors, uneven print beds, an LCD that died - just increasingly frustrated with what I am running into. So I let a print job run over night - it worked fine, I go to change the filament like I always do - heat nozzle to 210 for PLA - then run the change filament - it took a few tries - but I got the filament out - now trying to put another color in and it won’t budge. They have the worst filament change that I have ever seen - have you seen how PRUSA loads and unloads - wow - its amazing compared to this. I don’t want to take apart the head - any advice? Thanks ---
**Author:** ![mtarallo](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/mtarallo/32/9724_2.png) [@mtarallo](https://forum.lulzbot.com/u/mtarallo)\ **Post date:** [November 28, 2019, 11:25am UTC](https://forum.lulzbot.com/t/cant-change-filament-clog/7062/2 "2019-11-28T11:25:06Z")
I got it - I had to heat my nozzle to 240c - and used CURA to manually extrude and retract a few times - while inserting the new filament - I should not have to go through this to simply change filament. WTH?! ---
**Author:** ![JoeBowler300](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@JoeBowler300](https://forum.lulzbot.com/u/JoeBowler300)\ **Post date:** [November 28, 2019, 1:45pm UTC](https://forum.lulzbot.com/t/cant-change-filament-clog/7062/3 "2019-11-28T13:45:04Z")
What printer? What print head? Those temps are way too hot, you’re deep in the melting zone. A cold pull is done at 160c for PLA. I find it best to extrude 10mm at 180C, adjust the temp to 160C then pull out the filament by hand or retract 60mm or more on the aerostruder print head. ---
**Author:** ![mtarallo](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/mtarallo/32/9724_2.png) [@mtarallo](https://forum.lulzbot.com/u/mtarallo)\ **Post date:** [November 30, 2019, 5:17pm UTC](https://forum.lulzbot.com/t/cant-change-filament-clog/7062/4 "2019-11-30T17:17:22Z")
Thank you - I will adjust the temps as you suggested for the next change - it is the mini 2 desktop with the standard aero extruder head. I think the trick is as you suggested - to extrude before retracting. Using the Change Filament option from the LCD just does not seem to work like it used to.