[Testers Needed] Inconsistent Extrusion  

Re: [Testers Needed] Inconsistent Extrusion

Here you go. FW is 3_1_3 LA from you. Sliced with Slic3rPE, default Prusa PLA Profile, flow set to 92, and filament is Prusa PLA (open about 6 months)

Re: [Testers Needed] Inconsistent Extrusion

hows this?

blue filament, old brittle stock, unsealed two days ago

shorter model normal layer at a time 0.2 layer height,
taller moder, Spiral Vase 0.2 layer height

3.1.3 firmware, factory standard.
Slic3r 1.39.1 generic PLA settings

[attachment=0]20180405_221632[1].jpg[/attachment]

purple more modern pla, open about 6 months
[attachment=1]20180405_222415[1].jpg[/attachment]

Re: [Testers Needed] Inconsistent Extrusion

Issue updated with these latest examples.

Re: [Testers Needed] Inconsistent Extrusion

OK. I'm one of those MK3 users who have said that they haven't had any problems with my MK3. I have 2 MK2S in addition to the MK3 and all 3 were pre-built by PRUSA. I have run these test cubes on the MK2S before and when I got the MK3. In my opinion the MK3 test cube was as good if not better than those printed on the 2 MK2S.

Parameters:
- FoxSmart PLA Grey - about 9 months old (~$14/KG). I've had it drying in an oven at 40C for about 3 months until about 2 weeks ago when I started using this roll again. The spool in about 1/5 from the center (FoxSmart Spools have a smaller diameter than most other brands) so the filament gets pretty curly at this stage.
- 1 Perimeter
- No top layers
- 2 bottom layers
- Slic3r PE (latest version), profile 0.1 Detail with default settings)
- Extruder 215/210
- Bed 60/60
- Extruder Multiplier = 1 (this was set using Hatchbox PLA White, haven't checked with this FoxSmart PLA)

Re: [Testers Needed] Inconsistent Extrusion

OK. I'm one of those MK3 users who have said that they haven't had any problems with my MK3. I have 2 MK2S in addition to the MK3 and all 3 were pre-built by PRUSA. I have run these test cubes on the MK2S before and when I got the MK3. In my opinion the MK3 test cube was as good if not better than those printed on the 2 MK2S.

Parameters:
- FoxSmart PLA Grey - about 9 months old (~$14/KG). I've had it drying in an oven at 40C for about 3 months until about 2 weeks ago when I started using this roll again. The spool in about 1/5 from the center (FoxSmart Spools have a smaller diameter than most other brands) so the filament gets pretty curly at this stage.
- 1 Perimeter
- No top layers
- 2 bottom layers
- Slic3r PE (latest version), profile 0.1 Detail with default settings)
- Extruder 215/210
- Bed 60/60
- Extruder Multiplier = 1 (this was set using Hatchbox PLA White, haven't checked with this FoxSmart PLA)20180405_202300.jpg

Can you take a pic of this same cube, but with the light shining down from above? This is a specific requirement to see the artifact.

Thanks

Re: [Testers Needed] Inconsistent Extrusion

Also, just to prove I am not being sarcastic, here's an example with spot on lighting like your photo (my phone flash) vs light from an angle (flash off):

Re: [Testers Needed] Inconsistent Extrusion

OK... I've taken photos from different angles with regular overhead fluorescent lightning and with my flash.

Re: [Testers Needed] Inconsistent Extrusion

some more... could only attach 3 at a time.

Re: [Testers Needed] Inconsistent Extrusion

Is vase mode OK for this test?

Re: [Testers Needed] Inconsistent Extrusion

Here are some samples.

Firmware 3.1.3
Prusa Gray PLA opened 20days ago.
88% Flow tuned manually.

Honestly they look good to me overall. This is as "bad" as I could make it look with the lighting.

The first 3 are using prusacontrol. The GCODE says "generated by Slic3r 1.37.2.1-prusa3d".
Double wall with a base.

The next 3 are using slicer. The GCODE says "generated by Slic3r Prusa Edition 1.39.1-prusa3d".
Single wall, no base, with brim.

Re: [Testers Needed] Inconsistent Extrusion

Here are the next 3

Re: [Testers Needed] Inconsistent Extrusion

these are my test prints in vase mode, 150u Prusa PLA settings. Tried to use the sun as skimming light, but I'm not sure if you see in here also the artifacts you're looking for? They look pretty fine to me.
BTW: I have 2 mk3's. The gray one (Prusa silver PLA) is printed on a self assembled kit, the dark red one (Filamentum PLA) on a pre-assembled one. Both have stock FW 3.1.3.
Slic3r PE v.1.39.1-Prusa3D-win64

Re: [Testers Needed] Inconsistent Extrusion

For a point of reference, can someone post pictures of a similarly lit piece that does NOT show the artifacts? Doesn't have to be from a Prusa machine.

Re: [Testers Needed] Inconsistent Extrusion

For a point of reference, can someone post pictures of a similarly lit piece that does NOT show the artifacts? Doesn't have to be from a Prusa machine.

Yep:

Re: [Testers Needed] Inconsistent Extrusion

Can you take a picture not along the lines but across them, from bottom to top at an angle?

It seems to me that is the best way to see the variance best.

Re: [Testers Needed] Inconsistent Extrusion

Can you take a picture not along the lines but across them, from bottom to top at an angle?

It seems to me that is the best way to see the variance best.

Having to hunt for pics, that isn't my own. I only have a MK3. 🙂

Re: [Testers Needed] Inconsistent Extrusion

Sliced with Slic3r Prusa Edition 1.39.1
Standard 0.20mm FAST MK3 Settings
1 Perimeter
No top

Grey is a noname PLA
Pink is polyalchemy elixir PLA

Re: [Testers Needed] Inconsistent Extrusion

Add me to the list. I won't be able to take pics until tonight, but I have about 400 small one-layer cubes laying around that look like garbage with the light shining from above... lol.

Re: [Testers Needed] Inconsistent Extrusion

I’m not sure if I’m having this problem or not. I couldn’t get a clear still pic that shows what I’m seeing so here is a short video of my results:

What do you think? On one hand, my vertical lines look cleaner and more consistent than many of the pics here. But you can see a bit of a salmon skin effect when the angle changes.