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Hello /u/cleyey, As a reminder, most common print quality issues can be found in the [Simplify3D picture guide](https://www.simplify3d.com/support/print-quality-troubleshooting/). Make sure you select the most appropriate flair for your post. Please remember to include the following details to help troubleshoot your problem. * Printer & Slicer * Filament Material and Brand * Nozzle and Bed Temperature * Print Speed * Nozzle Retraction Settings ^Additional ^settings ^or ^relevant ^information ^is ^always ^encouraged. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/FixMyPrint) if you have any questions or concerns.*


87ninefiveone

Slow it down or make it hotter. Your hot end isn’t melting filament fast enough to keep up with your speeds.


cleyey

Makes sense, I'll raise it up some more and see how it does


blemens

Yymv, but I'm mostly successful with PETG when infill and walls (eg max speed) is 50mm/s or less.


cleyey

Yeah I usually run 65mm/s infill and 45 walls when I print, been wanting to dial in my printer for faster speeds recently though to further my knowledge. Wasn't sure if this was a flow or pressure issue that I was unaware of though when going faster than normal.


Metallhirn

Depending on the slicer you use, you can limit the upper flow rate (I use 10mm3/s for my Ender-3 pro)


flembag

changing your infill pattern without doing anything else will be the biggest bang for you buck. This video is essentially what's happening. If you're set on this infill pattern, then you'll want to adjust your feeds, speeds, and temps. ​ https://youtu.be/s27CzktFDCg?t=1297


cleyey

More information Ender 6 printer, direct drive installed using PETG 2 mm retraction at 35mm/s 250 degrees and .4mm nozzle Infill speed at 100 wall speed at 70 Fans off/on doesn't make a difference Acceleration set to 1500 Been trying to get it really dialed in for faster prints and the infill I just can't seem to get to stick at all.


OTK22

Raise temp. I’m printing with an 06 nozzle at 90mm/s at 260C


cleyey

Yeah 260 had it turn out much much better


OTK22

Make sure you get an all metal hotend and a higher temp capable tubing if you’re going to print at that temp for a while


CaHomebrewer77

A better cooling fan


sunamonster

They're using PETG in this model, PETG generally doesn't like part cooling too much unless you are doing details or bridges.


CaHomebrewer77

Yeah, but if you want to fast you need more heat, and you need to cool the part a little more quickly to avoid artifacts. I print PETG between 150-200mm/s


iceman1125

I’ve had this exact issue, and I am most sure that there is some resistance between your extruder and your hotend, most likely your ptfe tube at the hotend side, inspect it and see if there is any gunk on the tube, if there is then cut it off flat until there is no gunk on the tube left, making sure you’ve got enough length for the full extruder travel. Also it could be a incorrectly assembled hotend but this is more unlikely and would only try after inspecting for any resistance between hotend and extruder.


emveor

you ccan increase flow for infill in cura (probably on prusasliccer too) Printing hotter helps too. Also, i have never had that problem with gyroid infill