Having major issues with hybrid printing

Having MAJOR issues with PETG/PLA hybrid printing. When using PETG for both, the supports are almost impossible to remove.

When I try using PLA as a support interface, the extruder “clogs” and starts clicking/skipping immediately after the swap from the first PETG layer to PLA.

Even though some PLA exits the nozzle, it’s not enough, and I have to tear down the whole toolhead to fix it.How do I force a clean swap from PETG to PLA without these clogs?

Alternatively, what are the best settings to make PETG-on-PETG supports actually pop off? I’ve considered water-soluble filament, but if I can’t even get a PLA swap to work, I’m worried it’ll be a waste of money. Any advice on fixing the “clog” during the material change or optimizing PETG support settings (Z-distance, interface, etc.) would be a lifesaver. This PoS (p2s) is driving me crazy!

the model im using is This

Try a bigger Top Z Distance (ex. 0.35mm) when using PETG on PETG supports, so the layers are less fused together.

Printing guide for using PLA Basic and PETG HF for support - Community Contributions - Bambu Lab Community Forum

You may be better of using a dual nozzle printer H/X2d as i believe they are designed for purpose

When i see this page, i see printing profiles below, and they are:

PLA Basic supports PETG HF.3mf

PETG HF supports PLA Basic.3mf

PETG Basic supports PLA Basic.3mf

PLA Basic supports PETG Basic.3mf

if i am printing the project in PETG “basic” (overture PETG), and trying to use PLA as supports, would i use the PETG Basic supports PLA? or PLA Basic supports PETG basic?

and what does this profile actually do for me, because like i said, it really just seems like im dealing with an issue of it printing the first PETG layer perfectly, then when it comes to switching to the PLA, it changes, and the moment the PLA goes into the extruder, it starts clicking and refusing to extrude “properly” to continue, even though i see the PLA coming out of the nozzle…

Ultimately, it ends up making me teardown the extruder and removing a tiny 1-2cm filament piece, and occasionally a “chopped” bit thats the size of a sharpie tip from inside of the gear of the extruder.

I’ve tried to crank up the heat to 260 or anything to maybe heat it and force purge whatever tiny bit of PETG that might be residual in there that might stop it from extruding or coming out properly, but every single time, it cools the nozzle to about 220, but during filament change, i’ve noticed that the nozzle drops below 175, then after about 30 seconds to a minute, it heats to about 220-245 (245 after i tried to insert a custom filament Gcode to try to keep the temp up) and even then, it seems the machine/AMS2 firmware code is superseding any of the custom filament gcode i’ve tried to put in for “Filament_start” code. ■■■■, it was even ignoring any manual temperature settings or controls, which i understand if i am adjusting things mid print, but still.

There HAS to be a way to do this with a single nozzle machine, and for this to be such an issue im having that i’ve seen other people do with ease…there HAS to be something im doing wrong here…at least i hope its just me, and i can figure this out.

PLA supports PETG is what you want. Works really well once you get it figured out.