I’m using liftoff. Just rechecked and you’re right, it opens web links in Firefox. Unfortunately, it also opens YouTube videos in Firefox and imgur links in Firefox, which is much slower and worse than opening them in an internal viewer or ad-blocking app like revanced or imgurviewer.

It’s already set to Firefox, the apps either ignore the setting or have an internal web browser, which I like in principle, but because it’s chrome-based, it has no plugin/AdBlock capabilities

This is a flashforge creator pro 2 (in original comment). I’m not sure how to characterize the distortion, but the standard leveling routine puts the extruder in 3 locations near the screw adjustment. After adjusting spacing with a sheet of paper (included, calibrated thickness), it puts the extruder down on the center. The center is always higher than the 3 calibration points, often significantly.

I have both problems in different locations in the same test print first layer (see the second photo I posted).

What I’m concluding is that when the calibration locations (front center, left/right rear) are level at the ideal height, the center of the build plate is too high. This is either due to convexity of the build plate OR droop of the extruder due to very slight bending of the beam it travels on. I don’t know how to fix either of these problems.

Result of lowering the bed - perfectly deposited at the middle, underextruded at the edges

This is my attempt at calibrating the first layer. I don’t know if there’s some other process I should be using (while I’m fairly technical, I’m new to 3D printing)

In the case that is an uneven bed, where the middle is slightly high/convex, how do people fix that? I’ve calibrated it twice, but I think it’s still too close in the middle while the standard calibration locations (front center, back left, back right) are perfect

I think this could be the case but I just calibrated it twice and it still does it.

In the case that is an uneven bed, where the middle is slightly high/convex, how do people fix that?