Diagnosing Issues with Prints via Photo

Does it make sense to start a thread to diagnose issues with calibration and printer hardware/software issues by showing prints?


As a fairly new 3D Printer owner, I could see a lot of value in seeing examples of not-quite-right prints and getting feedback from more advanced users on how to diagnose and fix those issues. I know there is a wiki like this somewhere, but I didn't find it to be as useful as I'm imagining this will be, as it wasn't specific to our MakerFarm units.


Thoughts?

Here's mine to start...I'm seeing lots of this "waviness" happening in my prints. Its almost as if there's some wobble happening somewhere along the X Axis, but that's a complete guess on my part.


http://3dprintboard.com/attachment.p...tid=4289&stc=1

Of course, if you have any other recommendations for improving this print base on the photo, I'd be happy to hear it.

csader, I totally agree with a unified picture print diagnosis thread. I definitely don't mind giving my 2 cents if people post pictures in other threads in the future but why not capture a bunch of knowledge on one thread! (I'd say this could be the thread going forward). As always the more pictures per issue the better! Also maybe when the answer is found, edit in your original post with what the issue was.

For your picture, my best guess is that there is some debris getting between the delrin idlers and the top or bottom of your x or y axis rails bumping the carriage out of alignment slightly at the same points.

Also your belts could be loose, check for any play in the carriages (essentric spacers), and that the grub screws are firmly tightened on your x and y motor pulleys.

I think some basic info should also be posted. The more basic info makes it easier to ID problems as there is so many settings that will affect prints.
1. Machine
2. Filament
3. Hot end
4. Slicer used
5. Any other mods or firmware tweaks.

I would say the belts are loose. I think what your image shows is what's called "ringing", or "bounce". It's happening where one axis is making a sudden change of direction, and is bouncing a little bit instead of being held firmly in the new position.

I had that show up in my prints when I tried to use a clothespin-type spring belt tensioner on my X axis belt. Instead of making the belt tighter, it just made it springier, and gave me bad waves like yours whenever the X changed direction.

How is that part oriented on your bed during printing? Which direction is the X axis, and which is the Y? If the side facing the camera is the X axis, then your loose belt is the Y belt.

I keep having wierd extruder issues... Ive started cooling my prints this afternoon to see if that will fix my issue... As well as testing different extrusion multipliers just to test... For some reason when i am laying down solid layers or hard 90-180 degree turns i get huge amounts of filament but on straight lines it drops to almost nothing...

Another wierd extruder issue is that i go from having a normal print to a crazy over extruded print 50+ layers in...

Ill edit in pics tomorrow, been trying to get my oldest in bed for almost 3 hours now... I dont want to get up and ruin that...

http://i34.photobucket.com/albums/d1...108_094520.jpg

http://i34.photobucket.com/albums/d1...108_094529.jpg

http://i34.photobucket.com/albums/d1...108_094550.jpg

http://i34.photobucket.com/albums/d1...108_094550.jpg

http://i34.photobucket.com/albums/d1...108_094604.jpg

http://i34.photobucket.com/albums/d1...108_094653.jpg

http://i34.photobucket.com/albums/d1...108_094702.jpg

http://i34.photobucket.com/albums/d1...108_094716.jpg

Quote:

---

Originally Posted by beerdart

I think some basic info should also be posted. The more basic info makes it easier to ID problems as there is so many settings that will affect prints.
1. Machine
2. Filament
3. Hot end
4. Slicer used
5. Any other mods or firmware tweaks.

---

Great point beerdart! I'll add to my post.

NEW POSTERS, PLEASE INCLUDE ALL OF THIS INFO GOING FORWARD!

Hmmm, appears I can't edit my original post? Here are my deets (including bed/hotend temps):

Machine: Makerfarm Prusa i3v 10"
Filament: Hatchbox 1.75mm Green ABS
Hot end: Hexagon 1.75mm, .4mm nozzle
Heat settings: Bed 110c, Hotend 230c
Slicer: Cura
Mods/Tweaks: ABL

sniffle, how much infill are you using?

Sometimes when selecting solid or even above 50% infill or so (depending on the size of the object you are printing) can lead to some bulging of the layers higher up the print as the tip of the nozzle pushes extra melted plastic that's added up from the previous layers around out of its path.

On those particular prints it was 50% with 5 layers on the borders top and bottom...

Was thinking about building a mini kossel for fun. This is the single print platter

Can somone give me some light here . my printer was printer almos perfect since day 1 . and now im having inconsistency and this "weavy" efect in all of my prints . i have check the belts tension and posible loose parts but everything seems to be tight . also i have notice that i have a woobly threader rod but that has been like that since day one .

any help will be appreciate it

Machine: Makerfarm Prusa i3v 12"
Filament: Makergeeks Orange 3mm ABS
Hot end: Hexagon 3mm, .4mm nozzle
Heat settings: Bed 100c, Hotend 230c
Slicer: Sil3r Stock Maker Farm Settings at 230 C

http://3dprintboard.com/attachment.p...tid=4343&stc=1

Quote:

---

Originally Posted by pichuete

Can somone give me some light here . my printer was printer almos perfect since day 1 . and now im having inconsistency and this "weavy" efect in all of my prints .

---

I would say if everything is tight, (grub screws on gt pulleys, mounting screws on the motors, belts, essentric spacers, x carriage to nozzle bolts, glass to bed), it's definitely possible that over time you have reached a part of filament in your spool that has different dimensions than the first part of your spool which you calibrated to or were happy with without needing a calibration. I could see where a slight over extrusion could cause this effect in your prints. I would recommend trying a calibration (number 2 from the sticky) and see if that helps at all!