Support Failure - Mid Print ( 6 Hrs in )

I hope someone can offer some direction. I have a part that I have printed successfully many times, 12 or more, and never had a problem like this. Here is knowns, H2C, All Filament brand new, All Filament Dried 6 hours @ 65C. Then put in Printer, Same problem happened with other colors, filament from other mfrs. All Filament PETG. No Support Filament Used. First part of print looks good and always has, get to point where Yellow kicks in and problem starts. Changed Suppliers of Yellow thinking that was it? Think I many have adjusted something in Support Settings inadvertently. Did not want to upload a lot of data or info with request or permission. Hope someone can shed some light on this for me. Thank you for any help you may offer.

That yellow looks like it’s flowing really badly.

What specific filament is it?

Have you run a temperature tower to see how it’s looking at various temps?

I’ll be perfectly honest, yes your yellow has an issue, but all of your colors have extrusion issues - overextrusion at corners, really excessive seams, issues at color transitions, etc.

I think pressure advance and flow calibration for all your filaments is in order.

Thank you for getting back to me. This filament is PETG from Push Plastic. I had another Yellow from a off brand which I thought was the problem/ Sorry I don’t know how to run a temperature tower, but I will find out and do so.

Here’s one you can try:

does push plastic offer any print profiles?

a full calibration is what you want to do, but if they offer a profile (or at least some info) you might be able to get at least a half decent result already.

Thanks for the link, will run it and see what it shows. Did a Print Calibration before I started that print., Doing Flow Rate Calibration and Flow Dynamics, now..

Yes, I got their Print Profiles. Are these Flow Rate calibrations Filament specific ? Sorry if that is a dumb question.

All PETG filaments are broadly the same, but formulations vary by manufacturer, and as a result specific printing parameters will need to change, including flow rate.

Push is one manufacturer I’d always calibrate for - or use their supplied filament profile. They’re on the record as making comments about their formulations that I intepret to suggest their PETG is probably one of the least typical PETGs out there - meaning probably less likely to behave like the average “generic” PETG.

Thanks for all your replies, I appreciate it, very kind of you. Thanks again for all the info and updates. Have a P1S and then got the H2C. Said I am only going to use Bambu Filament for consistency. I tried hard, but supply issues and availability of color forced me to look elsewhere to meet project demands. My thought was the guys who built the printer should know how to make the filament for it. I did not want to add another variable into the crowded equation. Thanks again.