Hi there, I (still :lol: ) have an old M2, purchased in 2013, and it works pretty well but I'm seeing some issues. I'm hoping to get some input on a possible hypothesis that might explain what I've noticed recently. I've been getting some uneven prints, and now I see something that looks like unexpe...

My .pronsolerc file looks like this. set port /dev/ttyACM0 button 0 "Stop sysfan" M42 I1 P6 S0 button 1 "Stop cool" M106 S0 button 2 "Start sysfan" M42 I1 P6 S155 button 3 "Start cool" M106 S150 button 4 "Center" G1 X100 Y125 F10800 button 5 "Cal Y-" G1 X100 Y75 F10800 button 6 "Cal Y+" G1 X100 Y175...

Just wanted to bump this thread to make it clear that I've been updating my comment from Feb 16, above. I updated it several times, and the post now contains the config I'm successfully running on my old RAMBo.

I'm pretty relaxed on updating this myself, as you can see from the thread above I've shared my Marlin config before, and I've already been running my own updated Marlin for several years. My M2 from 2012 is way out of support. I don't expect anyone at Makergear will be testing new firmwares on this...

I've updated my old 19v M2 with RAMBo rev 1.3 with the latest Marlin firmware, currently v2.1.2.5. It works fine with this config. My focus has been on getting the baseline working as it was with the original firmware, but I've started including some of the new features, though some need to be enabl...

I've always used printrun/pronterface for this. I customized settings and some extra buttons for the M2. Keep in mind though that I've had my M2 for 10 years, so I probably have an earlier version, with 12v heaters and an earlier extruder/hotend. You may need to change values from my defaults. My cu...

Thanks for testing! The part you've printed looks acceptable for the purpose of a flexure, by my understanding. It should be printed this direction to make sure it works as intended in the openflexure microscope. Some sagging is acceptable. I've used this part to exemplify the uneven walls I get in ...

Hey Ed, Thanks for your input once more, getting your skilled eye on an issue is much appreciated! However, I don't think cooling is the issue either. I'm already going fairly slow, but I've tried printing this piece again, now 4 at the same time. This time I also rotated the four parts at 45, 135, ...

Hi, I've been struggling a bit with uneven extrusions, especially on small tall objects. I've attached a couple of photos that show the problem, but keep in mind that these are taken through a 20x microscope, so it doesn't look quite so bad in real life. The first photo is at 0.15mm layer width, the...

I've just worked my way through the details. I've tried to be conservative to avoid too many changes, so I may not have all possible options enabled. Below is the complete diff of what I've ended up with, relative to the 2.0.x branch of stock Marlin. I guess it's possible to experiment more from her...