Although the glass is pretty good as far as being flat, it's not necessarily uniform thickness. I measured a couple glass beds, and found that my original one was slightly wedge shaped; it was thicker on one side that the other. If I have to remove the bed for any reason, I make sure I install it in...

Sounds like not enough glue or too much water. I got a small fine mist spray spray bottle at Bed Bath & Beyond for about a dollar that works nicely. I use the "goes on purple dries clear" Emer's glue sticks. You don't want to hose it down, just add enough water to spread it in a film.

I lay down a grid of glue stick, and then spray it with a bit of water. I then smear it into an even film with my finger. Works great on PETG & PLA using the bare glass side of the factory build plate. I can refresh it several times by just hitting it with a quick spray & re-smearing it in any areas...

My pinion gear is getting a bit worn, and I have a replacement. I've seen various comments that they may be installed with an adhesive. At a minimum it's probably going to require a tiny gear puller, maybe along with some heat. Any recommendations on a puller the right size? If I need to apply heat,...

At some point, they reversed where the Z axis "home" position is located. On the Rev. E, the Z limit switch is with the platform all the way down. I'm not sure when they changed, but the older versions of the M2 had the Z limit switch at the top. It sounds like that's where your problem originates.

The frame doesn't look that different from my M2E, but the way they mount the bed cooling fan to the extruder is definitely a departure. However, I'm not sure I'd consider it an improvement...

First thing to check is whether the extruder motor is turning. I put a thin black marker stripe across the back end of the motor shaft so I can easily see if it's going round & round. If it isn't, you may have an electrical problem. If the motor is turning, it's most likely that the extruder has jam...

If it's always in one direction, I'd suspect an intermittent connection to the drive motor.

Thanks for the comments! I'll have to check the notes I have on doing a cold-pull, which I believe you do with the extruder unmounted. I've been thinking about machining a "handle" that would clamp onto the extruder the way the normal mount does. I'd prefer not to chew up the mounting surface with p...

I switched from red eSun PETG to some white HatchBox PETG, and after purging the extruder for a while and starting a small print job, I started getting clicking (actually, more of a clunking...) from the printer. The part was long & skinny in the Y directions, and it was most noticeable when it was ...