Unable to print Polycarbonate first layer (extruder overloaded)

Its just a square made in fusion, exported to studio and then resized to 315x315x.2. Standard .2 profile. Generic pc profile. Textured plate. I use textured plates 95% of the time. I hate carbon fiber plates. G10 is decent with a wet sanding. I used the textured here because thats what he used though. It looks the same on the smooth plate but the smooth plate has a hard time hanging on to PC. If that were a wavy spot, its so tiny that I wouldnt attribute it to flow but rather something with the bed surface. but its just an area that you can see the layer lines, surrounded by perfect layers, so it stands out. Possibly a thumb print or atleast part of one.

If he can just rule out the nozzle, actual nozzle temp and the filament, I’d say contact support.

How would one test the actual temperature of the nozzle?

Some sort of temperature sensor with a thermocouple probe. Its a tough one to test if you dont already have a probe. Ive seen a bunch of people have issues with the actual nozzle temp being lower than requested. Thats why I said try it with 15c higher temp, just to see what happens.

Like this with a multimeter that accepts it.

So you just use some high temperature tape to hold it on, or just hold it to the nozzle by hand?

I guess that’s the part I’m not sure how to do - I do have k-type thermocouple probes, but I’m unsure how I’d get an actual good reading off the nozzle with it.

kapton tape and a little thermal interface. The thermal paste will fill in the small gaps. Then just stick it to anywhere it will fit really. After the heat break. Preferably as low as possible. I havnt had the need to check an H2D. Others here have. Hopefully they chime in with tips.

This print uses PC Clear with stock settings on a Smooth PEI plate. The bed temperature is set to 110 °C, using Magigoo PC adhesive. The first layer is printed at a temperature 10 °C lower than the maximum specified in the stock profile. Firmware version: 01.01.02.07 (beta).

This print uses ASA with stock settings on a Smooth PEI plate, utilizing both nozzles. The bed temperature is set to 110 °C, with no adhesive applied. The first layer is printed at a temperature 10 °C below the maximum defined in the stock profile. Firmware version: 01.01.02.07 (beta).

Both prints consist of a single 0.20 mm layer, using Bambu Lab 0.4 mm High Flow (HF) nozzles.

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