Flaky 3D print. Why?

[TheNaitsyrk]

I 3D printer a beer opener, but it came off really flaky.

 

I just used Cura and Ender 3 profile (as in stock) and printed it.

 

Anything I did wrong?

[yolosnail]

24 minutes ago, TheNaitsyrk said:

I 3D printer a beer opener, but it came off really flaky.

 

I just used Cura and Ender 3 profile (as in stock) and printed it.

 

Anything I did wrong?

 

What do you mean by 'flaky'?

I can't really tell by the picture, but it looks a bit under extruded.

If that is the case, I'd be willing to bet you've got a blockage in the nozzle.

[TheNaitsyrk]

3 minutes ago, yolosnail said:

What do you mean by 'flaky'?

I can't really tell by the picture, but it looks a bit under extruded.

If that is the case, I'd be willing to bet you've got a blockage in the nozzle.

It printed out fine, it's when I took it off it just fell apart kind of thing.

[airdeano]

material?

speed?

temps?

cura version?

[TheNaitsyrk]

48 minutes ago, airdeano said:

material?

speed?

temps?

cura version?

PLA.

Default? I'm new to this, just used Ender 3 preset.

60C bed, 205C nozzle.

Cura 4.2.1

 

[yolosnail]

1 hour ago, TheNaitsyrk said:

It printed out fine, it's when I took it off it just fell apart kind of thing.

I had that happen to one of my prints before, it looked fine, but the layer adhesion was non existent.

 

I would try doing a couple hot pulls

Remove the filament, take the PTFE tube out of the hot end and heat up to about 210-220c. Then feed about 50mm of filament through the hot end manually, and quickly pull it back out. Repeat that a few times, cutting the end of the filament before doing it again

 

[TheNaitsyrk]

1 minute ago, yolosnail said:

I had that happen to one of my prints before, it looked fine, but the layer adhesion was non existent.

 

I would try doing a couple hot pulls

Remove the filament, take the PTFE tube out of the hot end and heat up to about 210-220c. Then feed about 50mm of filament through the hot end manually, and quickly pull it back out. Repeat that a few times, cutting the end of the filament before doing it again

 

I realised my mistake, the options I did weren't great. Amount of walls etc. Wasn't rigid enough.

[airdeano]

if printing .2 layers try this profile:

Magic0.20.curaprofile

this is the CHEP profile he uses in his vids.

when you 'level' the bed, make sure the bed is at temp and hot end is at temp.

using a piece of paper to slide between the nozzle and glass.there should be some drag, but no real resistance.

[yolosnail]

1 minute ago, TheNaitsyrk said:

I realised my mistake, the options I did weren't great. Amount of walls etc. Wasn't rigid enough.

If you don't mind me asking, what settings did you use.

For that I would have gone with 0.2mm layer height, 3 perimeters and probably 40% infill

[TheNaitsyrk]

Just now, yolosnail said:

If you don't mind me asking, what settings did you use.

For that I would have gone with 0.2mm layer height, 3 perimeters and probably 40% infill

Stock Cura settings.

[TheNaitsyrk]

4 minutes ago, airdeano said:

if printing .2 layers try this profile:

Magic0.20.curaprofile

this is the CHEP profile he uses in his vids.

when you 'level' the bed, make sure the bed is at temp and hot end is at temp.

using a piece of paper to slide between the nozzle and glass.there should be some drag, but no real resistance.

I'll use these settings and let you know how it goes. I'll only increase the amount of walls inside of this thing, but otherwise it's the profile untouched.

[yolosnail]

1 minute ago, TheNaitsyrk said:

I'll use these settings and let you know how it goes. I'll only increase the amount of walls inside of this thing, but otherwise it's the profile untouched.

Yeah, for that you're going to want the walls to be thicc, it's the walls that give it the strength

[TheNaitsyrk]

1 minute ago, yolosnail said:

Yeah, for that you're going to want the walls to be thicc, it's the walls that give it the strength

Yeah, the walls made it stiff in the narrow part of the object, but the bigger part was flaky.

[airdeano]

when the printer is printing, if you'll rotate the knob on the screen, the feed/speed rate will increase clockwise, decrease counter-clockwise.

the first layer should be 20-25mm/sec, after that if all is tight, 50-60mm/sec after initial layer is down. plus the bed can be drawn down on temp to 40°ish.

Just now, TheNaitsyrk said:

Yeah, the walls made it stiff in the narrow part of the object, but the bigger part was flaky.

if the layers are grainy, your printing too fast for the extruder. each layer should bond to the layer below.