If you want to run flexibles, I would highly recommend the Bondtech extruder.

You do NOT need the Bondtech heat break. ETA: You don't need it for the Bondtech extruder to work. I haven't had any issues I've associated with the heat break, but my next order from Filastruder will include one for shits and giggles. BTW: Filastruder has the Bondtech stuff in US stock.

Before buying any mods, make sure you put some time on your printer, make sure its GTG. Take a look at the bed mounting screws, make sure none are loose.

There is NO print quality difference at all with the Bondtech extruder, it only helps for flexibles. In theory, it could let you run faster with a bit better extrusion accuracy due to the dual drive gear upgrade, but I have not noticed anything.

Note on the Bondtech upgrade: You need to add a line of code in the slicer to accommodate the new steps/mm for the extruder on every print. The easiest way to do this and not forget to do this is to make profile copies in Prusa slicer, add the line of code, and label them something like ".4 Mini Bondtech".

If you ever grab gcode off of the Prusa forums, you can simply open up the Gcode in notepad ++, add the line just before it makes it's first extrusion, and save it.

PLA prints wonderfully, of course. I've also had no issues with PETG. I have both the smooth and textured bed, and I had issues with adhesion on the textured bed. To fix that, I ended up taking steel wool and scratching the surface of the textured sheet. I "sanded" long enough to get the shine gone. I still can't get PLA to stick to the textured sheet worth a damn, but I bought the textured strictly for PETG anyway. You may need to increase your bed temps for PETG to 90c for good adhesion: just play with it until you dial in for your filament.

When you print with PETG on the smooth sheet, you need a separating agent. I go back to glue stick, it just works and washes off easily.

If you print anything with a really small footprint, use smooth sheet.

Speaking of washing off, if you notice bed adhesion issues starting to arise, scrub your sheets with HOT water and Dawn (or equivalent), and then "bake" them on your printer at 80c for 30 minutes or so, but periodically lifting the sheet off the build plate so trapped moisture can evaporate away. NOTE: This practice is specifically NOT recommended by Prusa (either the water wash OR the scratching), so do so at your own risk.

Another thing about adhesion: I had to slow down first layer by almost 50% of the reduced first layer built into the profiles. TAKE YOUR TIME on the first layer. Also, increasing first layer line width helps a LOT. Fat and slow are your friends on the first layer.

ETA: Do you have a link for those network enclosures?

Glad all my rambling is helping at least some folks


Yes, you can adjust first layer line width. You may need to turn on expert mode though. The first layer love width option is in the same area iirc.

I would slow down the first layer speed more than the stock profiles. The Prusa profile for my printer is just too fast, gives the same symptoms you are having. You my have to also increase bed and/or nozzle temp 10* to help with first layer adhesion.