holoped
-
Posts
25 -
Joined
-
Last visited
Never
Content Type
Forums
Events
3D Prints
Posts posted by holoped
-
-
The print speed was 50, which I would not call fast. Temp was 220. These settings worked well up until recently. I tried turning off retraction and got the same result. I only took off the nozzle, did not take apart the hotend. I guess it's time to do that.
-
It's an Ultimaker 1, with the extruder and hotend upgrade. It was working ok for a long time, and recently started this strange problem. I'm not if it's a hardware or software issue.
The first layers are always perfect, and then the print becomes spongy, as if extrusion rate is way too low, or the hotend is jammed. But if I restart the print, than once again the first layers are perfect.
Here is a picture. Left is 30% fill, middle is 80%, right is %100. Notice that the right one is perfect, and rest first 10 layers are also good.
https://www.dropbox.com/s/ex4wu15ihrqnuwd/IMG_20141204_214617.jpg?dl=0
I tried cleaning the nozzle, I tried uploading a fresh firmware, I tried downloading latest Cura and resetting everything. Same results.
Any ideas what is going on?
Thanks.
-
And then what ? What am I looking for ?
-
Hi All,
I noticed this in the latest Cura (14.01) that I see the print head hopping around
and placing random dots along the outer shell.
See it hopping in this video (I have z-hop plugin, but this is not caused by the plugin, the same happens without it)
This is a complex part, but it also happens in much simpler shapes.
I had to stop using Cura for now, as this hopping behavior messes up the print.
Any ideas ?
Thanks.
PS. I printed the same object with Slic3r and it printed fine.
-
I have the same problem, but only on one of my laptops. Using the latest version 13.11.
This has something to do with the graphics card.
-
Is there a way to make the plugin setup permanent ?
I use TweakAtZ to make the first layer hotter so it would stick better,
this works very well but I have to add and config the plugin for every object
I want to print.
Also, is there a plugin that moves the head up when retracting ?
Best,
HP
-
Hi,
I'm having problems printing large items. Smaller things work well,
but when items are big I get huge shifting mid-print (up to 2cm shift on some occasions). Some times several shifts happen during one print, with just a few layers in between shifts.
I have no idea where this is coming from. The belts are nice and tight.
Any ideas how to find the source of this problem ?
-
Thanks everyone. I'm going to find some 6" tape and alcohol and try it.
-
Hi,
I'm printing some large flat PLA parts,
and they warp noticeably at the corners.
I'm using Cura at 0.1mm, 210c, 70mms and with Brim.
Printing on green painter tape applied on the original acrylic bed.
The part will warp and lift the tape with it.
Any ideas ?
Will blue painters tape work better ?
I tried printing at 200c, but I get jams so I suspect that the real temperature
is actually lower than what the thermsistor is reporting.
I have an IR temp gun, which reports 150c when I set the hotend to 220c.
I don't think that reading is correct though.
How do I calibrate or measure the hotend temperature ?
Thanks.
-
Hi,
I run my ultimaker usually at 50mms.
After a long print the steppers can get really hot, between 50 and 60c.
Is this normal ?
Can I fix this ?
Thanks.
-
Where did you find 0.15" ID tubes ?
-
Send the filament back.
I wish I could, it would cost me more than what it's worth.
-
Hey everyone.
I bought some PLA reels from MatterHackers, and one of them (Light Blue)
is between 2.95 and 3.00mm width (the others are 2.85).
This filament will jam in the bowden tube to such extent,
that I have to disconnect it from both sides and pull out the filament with
pliers.
Do I need a new tube ?
Is 2.95mm within acceptable range for PLA filament ?
Thanks.
-
I cleaned the nozzle one final time, got new PLA filament, and installed a fan to cool the PEEK part of the hotend.
Now it works flawlessly.
Thanks everyone for your help.
-
-
I've tried everything, took off the nozzle and cleaned it several times, it will always jam. Now it jams after a few minutes.
The extruder eats the filament, and if I open it and try to push it by hand it won't budge. Even at 250c.
-
I took off the nozzle, cleaned everything, pushed through some filament, and repeated the process twice.
Filament was flowing like butter. Started another print and it jammed after about 4 hours. Kinda tired of this really.
-
Well it just jammed again. I suppose you are right about cleaning the nozzle. That would be the project of the day tomorrow. Good night, and thanks for the detailed response. I'm going to need it.
-
No conclusion yet, it still jammed. I'm now testing again after second flush.
-
First test print (about 3 hours) was good,
second failed at the first layer. It stopped extruding, then started again, then stopped - a few times like this -
and then jammed completely.
I did another flush at 250c and something popped and it started to flow again.
I only have two PLA reels, they both are not new and may have gone bad (?)
-
I've pushed through about 25cm at 250c.
Printing a test now, no retraction, we'll see how it goes.
Thanks everyone !
-
OK I assume the sprint is the spring loaded screw, thats about 13mm with the washer.
-
The bolt is all the way down, yes.
Speed - 50, layer height 0.1, 210c
what do you mean sprint ?
When the head is heated the plastic flows.
I'm not sure if it's smoothly or nicely, because I don't have anything to compare with.
Thanks !
-
Hi,
I have an Ultimaker (with the extruder upgrade) that I got used from a friend.
I've only had it a week.
It worked well in the past but now I can't get it to finish a print.
It will always jams and strips the filament.
Sometimes it works great for a while, then starts to print 'fluff', very airy with no
structural strength.
My PLA is transparent from Protomachine. It might be bad, i'm not sure.
I've tried playing with the temperature settings, I've tried turning off retraction and I've tried to tighten or loosen the extruder spring screw, nothing seems to help.
I would welcome any ideas to troubleshoot this.
Thanks,
HP
First layers are fine, the rest are very under-extruded
in UltiMaker 3D printers
Posted
Didier, it's an ultimaker 1. Going to 260c will melt the PEEK and kill the hotend. Also, I tried cold-pulling, and it could not get it to work, it always snapped the filament. Maybe this is a symptom of the same problem ?