Search found 1113 matches

by ednisley
Tue May 19, 2020 12:55 pm
Forum: M3-SE
Topic: Changed film on glass plate, now prints have gone wonky.
Replies: 2
Views: 70

Re: Changed film on glass plate, now prints have gone wonky.

replaced it with a new one Have you scrupulously cleaned the new film with, say, denatured alcohol / acetone? The least little film of anything will wreck first-layer adhesion. Rubbing alcohol & suchlike may have additives that look a lot like oil to a 3D printer, so make sure the "solvent" isn't c...
by ednisley
Mon May 18, 2020 2:01 pm
Forum: Tech Support
Topic: pause when no more material
Replies: 4
Views: 108

Re: pause when no more material

sonra wrote:
Sun May 17, 2020 1:06 pm
Did you mean to this one
I just aimed you in the direction of buying something, rather than building it from scratch.

They're pretty much generic and, because I have zero experience with any of them, I can't recommend anything in particular.
by ednisley
Mon May 18, 2020 1:59 pm
Forum: Tech Support
Topic: Z motor catch and dropping only during startup sequence.
Replies: 11
Views: 378

Re: Z motor catch and dropping only during startup sequence.

not consulting Occam's Razor Well, that's obvious! In retrospect, anyway. [grin] The third item in the Debugging Rules poster over my workbench applies: "Quit thinking and look". It seems I can always come up with a complex fault that doesn't actually match the obvious-in-retrospect evidence, alas....
by ednisley
Sun May 17, 2020 1:09 pm
Forum: Tech Support
Topic: Z motor catch and dropping only during startup sequence.
Replies: 11
Views: 378

Re: Z motor catch and dropping only during startup sequence.

accelerations during homing to match that of jogging Now that I look at the source again, at least for (obsolete) Marlin 1.1.0, there's only one acceleration setting. Seeing as how homing works, it's probably OK. during the startup lift That first move is in the startup G-Code prepended to the mode...
by ednisley
Sun May 17, 2020 12:34 pm
Forum: Tech Support
Topic: pause when no more material
Replies: 4
Views: 108

Re: pause when no more material

light source and photo electric sensor This is a solved problem, at least for the switch hardware: https://www.amazon.com/s?k=filament+sensor Mechanical switches seem more reliable than optical, if only because of the usual fuzz. It plugs into one of the unused limit switch jacks, although the conn...
by ednisley
Wed May 13, 2020 11:37 am
Forum: Tech Support
Topic: Z motor catch and dropping only during startup sequence.
Replies: 11
Views: 378

Re: Z motor catch and dropping only during startup sequence.

cannot make it catch by any other means What's different: the different speeds & accelerations used during homing vs. manual jogging vs. normal operation. The Z-axis motor must produce plenty of torque to lift that massive aluminum plate. If there's any mechanical binding / crud on the guides / wha...
by ednisley
Tue May 12, 2020 12:37 pm
Forum: General Discussion
Topic: M2 or M3SE
Replies: 7
Views: 1043

Re: M2 or M3SE

this was half the price of a new one. A friend picked up an Ender 3 Pro in January, added a couple hundred bucks of this-and-that, and, after many misadventures, was delighted with the results. All in, it cost maybe 20% of a new M3 with a good out-of-box experience. Which, right there, tells you wh...
by ednisley
Thu May 07, 2020 3:06 pm
Forum: General Discussion
Topic: M2 or M3SE
Replies: 7
Views: 1043

Re: M2 or M3SE

Opinion follows … Based on watching folks I know who own various printers: buy the M2 or M3. To a very good first approximation: Everybody else seems to have a printer that works great after replacing this, that, and the other thing, then spending considerable time & effort keeping all the parts fly...
by ednisley
Sat Apr 18, 2020 12:59 pm
Forum: Tech Support
Topic: M2 Not homing correctly y axis
Replies: 4
Views: 729

Re: M2 Not homing correctly y axis

grant1842 wrote:
Fri Apr 17, 2020 3:12 am
intermittent problem in the wiring
Now, that's pretty far down on the list of things to check! [grin]

Thanks for following up, because somebody else will definitely benefit from your experience …
by ednisley
Sat Apr 18, 2020 12:32 pm
Forum: Tech Support
Topic: .75 Nozzle on V3b
Replies: 2
Views: 607

Re: .75 Nozzle on V3b

push this as far as I can get away with The fundamental limit comes from the heater's ability to bring cold plastic up to extrusion temperature inside the 20 mm hot zone. Using airscape's example, the extruded thread is 0.5 mm thick × 0.8 mm wide = 0.4 mm², so laying down that thread at 50 mm/s mea...