If the machine is that old and has been used heavily, I would suspect an intermittent connection in the wiring harness. On the other hand, I don't know enough about stepper motor drive connections to see how it would reverse direction occasionally...

Thanks! I'll have to add this to my notes. I got it working a while back, and someday I will want to add some macros to help do things like change filaments. For now, I'm too used to the old Simplify 3D control interface, and I just use that. For a long time it wasn't clear if S3D was going to survi...

MakerGear does have a beta version of Marlin 2.1. I downloaded it about a year ago, but I had a few issues I wanted to fix/investigate, but got tied up with other stuff. They may have a newer version by now. The things I ran into were: 1) All my motors run backwards. Their recommendation was to open...

As you have discovered, this forum is pretty quiet. Unfortunately, I have a single extruder machine and can't provide any assistance. Your best bet is probably to contact MakerGear factory Tech Support. They've always been helpful when I've had a question. The other thing might be to track down the ...

Ah, the good old days. My Mom had a "Underwood Noiseless" mechanical typewriter. I think this was before "truth in advertising" became a thing... It was loud, black, & mostly cast iron. To get upper case, your pinky had to lift the entire carriage assembly, which took stronger fingers than I had whe...

I worked at Hewlett Packard around 1980 designing test equipment. We had a really sharp industrial designed who had done an in depth study of fan noise. Nobody else seemed to pay much attention to fan noise back then. That was the first time I heard about the 'siren effect" from having struts or a g...

Glad to see some of the old-timers still hanging around... The spacing is definitely part of the puzzle. I tried several variations of the velocity stack, with the bottom of the struts moved up in 1 mm increments. The further away you get, the better. The factory grill is mounted with a pair of wash...

I realize this is an old thread, and that the forum isn't terribly active these days. However, I just completed a couple week investigation of fan noise & air flow on my M2E, and I figured this was still the best place to post the results. I've got a lengthy write-up, with a bunch of photos, and I p...

I have an M2E printer, and I'm going to upgrade the firmware. I want to be able to test it a bit before I run a print, and was planning on using Pronterface. I've installed it, and set all the parameters I can find. If I click on the three "Home" buttons on the jog control wheel, all three axes go t...

I've got ringing on a print, and wanted to revisit the possibility of upgrading my firmware to take advantage of some of the newer features that might help. The first thing I discovered is that the stock M2E firmware won't respond to a g-code M115 command, which is supposed to report firmware inform...