3DPrinting

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Trouble with warping (feddit.dk)

submitted 2 days ago* (last edited 2 days ago) by Grippler@feddit.dk to c/3dprinting@lemmy.world

18 comments fedilink hide all child comments

I have some very consistent issues with warping when printing ASA/ABS, which is really annoying since I'm trying to print my voron parts. It's not warping massively, but enough to mess things up.

I print with these general settings, on a textured PEI flex-plate.

heated chamber @ 45-47C (can't go much higher)
bed temp @105C
first layer 255C, other layers 245C
fan off, unless it's an overhang >=50% or layer time is <10s. Fan maxes out @70% unless bridging.
speed 200/120 mm/s inner/outer walls
first layer 50mm/s, 80mm/s infill

I've tried both with my regular Z-offset which creates a good uniform first layer, and slightly lower to kind of push it more on to the plate (but worse looking)

I've cleaned the plate with pure IPA
I've tried glue stick
I've tried brim both skirts/mouse ears, which help but don't eliminate it. (5mm, 0.15mm space)

ABS seems to be a little easier to print than the ASA. I'm using filament from Polymaker

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[–] halfapage@lemmy.world 7 points 2 days ago* (last edited 2 days ago) (1 children)

Holy shit dude this connector is an active fire hazard. You have to replace it, or the board, do not use the printer as it is now. Also remake terminals on wires. Do wires get hot as well? Something has too much resistance and acts as a heater, it's unsafe.

It should not burn like that even on full power. If your bed heater MOSFET ever shorts for any reason, it WILL pass through all power the fuse would let pass. If it burned like that and fuse didn't budge, imagine what can happen then. No wonder your bed takes a while to heat up when some of the power is wasted heating the connector.

[–] Grass@sh.itjust.works 3 points 2 days ago (1 children)

makes sense. already have better boards lined up for both printers, pending time off work to install and rewire. Honestly I expect assorted smoke and burning from creality stock boards and the ones I've sold or given away were sent off with aftermarket controllers that the internet and myself have more faith in. This was one of the last 2 functioning stock boards I've ive been using for 3d printing experiments I don't want to do on more expensive gear.

[–] halfapage@lemmy.world 3 points 2 days ago

Glad to read it!

Sorry to be such an alarmist, I just have a special kind of worry for this kind of stuff. Didn't mean to sound so condescending.

Stay safe!