Ontopic The 3D printing thread

@Mr. Asa, by "properly torqued", I mean to make sure the eccentric adjusters are holding the rollers against the extrusions. The display side of the Y axis has rollers on eccentric adjusters, as well as the inside roller on the display side upright, and the bottom roller on the X axis.
 
Jehannum said:
@Mr. Asa, by "properly torqued", I mean to make sure the eccentric adjusters are holding the rollers against the extrusions. The display side of the Y axis has rollers on eccentric adjusters, as well as the inside roller on the display side upright, and the bottom roller on the X axis.
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I'll have to take a look at that.
 
20181216_191226.jpg

Benching it up after tuning the z offset parameters for the BLtouch.

Hey @gee what kind of Arduino board do the real fancy printers run? Just curious after having to cut to the "slim" LCD menus to save space.
 
This is probably gonna be your most elegant solution, with a 32 bit controller and Trinamic drivers:


I ended up disabling SD card support on my printer to get everything to fit, and sent jobs using Octoprint instead.
 
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gee said:
This is probably gonna be your most elegant solution, with a 32 bit controller and Trinamic drivers:


I ended up disabling SD card support on my printer to get everything to fit, and sent jobs using Octoprint instead.
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I'm pretty happy with the way things are working right now, and octoprint is definitely on the road map for this shitbird.

Gonna make up some solid standoffs now for the bed, and think about how to stiffen up the super floppy aluminum bed carrier.
 
Jehannum said:
Oh, I'll probably do it in the garage, and make it out of some steel instead of the alumilum.
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You don't want to add too much weight to the Y carriage. More weight that the Y axis has to push and pull back and forth, correspondingly more force on the frame/belts/whatever, probably more slop/artifacts/etc.

Call around a couple metal shops and ask if they got any 1/8" aluminum plate in the scrap bin. "Hard machiney stuff not bendy sheet stuff."
 
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gee said:
You don't want to add too much weight to the Y carriage. More weight that the Y axis has to push and pull back and forth, correspondingly more force on the frame/belts/whatever, probably more slop/artifacts/etc.

Call around a couple metal shops and ask if they got any 1/8" aluminum plate in the scrap bin. "Hard machiney stuff not bendy sheet stuff."
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Might be able to swing some titanium through one of my friends.
 
Current state of the shit of thesus.

U9ZfJYrh.jpg


My MK52 clone bed came in, so I hauled off the old one and put on the new one. Had to drill a couple extra holes in the center of the carriage plate and quickly run off/print a new belt holder. Put it all together... and the PCB print bed hits the Y motor. So I need taller standoffs... except I can't find any M3 thread standoffs that are 10mm. So I've got the bed stacked on spacers and washers and shit, but only by the 4 corners and not the center. So it's got a bad warp.

And Marlin for some weird reason doesn't want to correct for it - it's trying, it's moving the stepper motors, but what it's doing is all wrong. This heat bed is full of magnets so I'm wondering if the field is fucking up the inductive sensor somehow.
 
Oh, and the spring steel sheet came with two sheets of PEI and two sheets of 3M 468MP.

I didn't realize the 1st sheet had a protective film on it and managed to attach it protective film side down to the heat bed... so I fucked that one up. Other side went together OK. Then I printed a PETG print onto the heat bed... and it stuck so well it tore the (stupid thin) PEI off the bed.

So I'm back to masking tape (fuuuuck) until I get another sheet of PEI. Probably gonna do PEI (thicker mcmaster-carr stuff) on one side for PLA/whatever, kapton on the other side for PETG/TPU.
 
gee said:
The Prusa MK3 has an inductive sensor for this exact bed though, and it doesn't look like the probing pattern is set up to avoid the magnets.
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Chuck always told me "when you're damned sure its the carburetor, you better take one last look at the distributor."

Some software fuckery going on with the Prusa, maybe?
 
gee said:
Current state of the shit of thesus.

U9ZfJYrh.jpg


My MK52 clone bed came in, so I hauled off the old one and put on the new one. Had to drill a couple extra holes in the center of the carriage plate and quickly run off/print a new belt holder. Put it all together... and the PCB print bed hits the Y motor. So I need taller standoffs... except I can't find any M3 thread standoffs that are 10mm. So I've got the bed stacked on spacers and washers and shit, but only by the 4 corners and not the center. So it's got a bad warp.

And Marlin for some weird reason doesn't want to correct for it - it's trying, it's moving the stepper motors, but what it's doing is all wrong. This heat bed is full of magnets so I'm wondering if the field is fucking up the inductive sensor somehow.
Click to expand...
Is that a dual motor Z rod setup, or two Z rods with a belt drive at the top holding them together?
 
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