esopalumpa
-
Posts
38 -
Joined
-
Last visited
Content Type
Forums
Events
3D Prints
Posts posted by esopalumpa
-
-
On all 3D-printer I have worked so far (even the Ultimaker), the print-speed is not limited by the head-movement, but by the maximum amount of filament the hotend can meld.
As far as I can see there is no way to specify this in Cura (other slicers can do this).
So I have to do the math by hand every time I change settings.
This is annoying.
__________
Example for a printer that can meld about 4 mm³ PLA per second:
60 mm/s speed, 0.15 mm layer height, 0.35mm extrusion-width → 3.15 mm³/s | O.K.
first layer: 0,3 mm layer height, 30 mm/s speed, 150% initial layer line width → 4.725 mm³/s | too muchI have to reduce first layer speed to 15 mm/s.
-
‣ Push the collet down
‣ insert the bowden and push it in with some force
‣ pull the collet up (with some force) while still pushing the bowden down
‣ insert the clip
The original clip is 1.4mm thick. I designed clips with 1.5 mm, 1.6 mm, 1.7 mm and 1.8 mm to increase tension on the collet if necessary.
Ultimaker-3-bowdenclip-1,4mm.stl Ultimaker-3-bowdenclip-1,5mm.stl Ultimaker-3-bowdenclip-1,6mm.stl Ultimaker-3-bowdenclip-1,7mm.stl Ultimaker-3-bowdenclip-1,8mm.stl
-
3
-
-
The feeding is not blocked and all parts are originals. Even if it blocks I would expect the feeder to grind the filament (as reported frequently) instead of pushing out the bowden.
I think I installed it correctly.
I’m quite sure there is something wrong, but I don’t know what.
Therefore the question about where the rotation should be absorbed.
-
11 minutes ago, P3D said:
How does the end of your bowden tube look like? It could help to cut the end so there's a fresh end that the fitting can hold on to....
It is visibly worn out.
We already cut it several times and then replaced it together with the collet. I just shortened the new bowden the second time.
This helps for a short time, but then it happens again.
-
It did it again…
Is anybody able to shed any light on this?
-
I disassembled (and reassembled) the feeder.
Seems to be O.K.: no wear, broken parts or cracks as far as I can see.
My assumption is, that if the printhead moves, the bowden transmits the head movement to the collet as it is quite stiff. Over time the bowden-collet connection wears out and the bowden wiggles out of the collets.
Which part is intended to absorb the bowden movement, esp. the rotation?
Should the collet rotate in the feeder-case, should the bowden rotate in the collet or should the bowden akt as a torsion-element?
-
2 hours ago, geert_2 said:
When mounting the bowden tube, do you push it far enough in, all the way down?
Thus: first lift the rentention ring with your finger nails. In my printer this is a white ring on top of the head, where the tube goes in. Then insert the bowden tube all the way down, while you keep the white ring lifted. And then insert the horseshoe clip? If the tube is not inserted deep enough, it may not grip well upon pulling. That could produce the phenomena you see. (But that does not mean there can't be other causes, such as a worn-out tube, or incorrect outer diameter.)
It is installed correctly. As deep as possible.
-
12 hours ago, Framar said:
Hello,
Never see that on our S5. Does it happen with any type of material?
Stupid question but does the retainer clip on that locks the tube in place is in place?
We primarily print with PLA.
I don’t know if it happens with other materials.
Yes, the retainer-clip is in place.
9 hours ago, ultiarjan said:Actually the locking is done by the little teeth in the white plastic thingy, not the horseshoe shaped thingy. Did you check it? Did you change it for a new one when you changed the Bowden for a new? Did you get a original Ultimaker part? I have seen 3th party tubes with a too small diameter..
We changed the “white plastic thingy” (https://www.igo3d.com/Tube-Coupling-Collet) when we changed the bowden.
igo3d is a official ultimaker reseller (https://ultimaker.com/de/resellers/de), so we assume both the tube coupling collet and the bowden are original parts.
And, btw., it first happens with the parts that were mounted when we purchased the printer.
-
Hello,
Our UM3 started to push out the bowden-tube from the feeder during printing, destroying the running print.
We cut the end of the bowden, this worked for one print sometimes.
After doing this several times, we replaced the bowden and the coupling-collet on the feeder-side.
This worked for some time, then the printer pushed the bowden out of the feeder again.
This happens without visible reason: no clogged nozzle, etc.
I would have expect that the feeder would rather grind the filament than push the bowden tube out of the feeder.
Any hint? Is this a common problem with Ultimaker printers?
-
15 hours ago, tinkergnome said:
Can it be that simple?
Yes, that was the 100% problem.
But the 1 % – 99 % problem remains. Cura does not generate infill between the inner and outer wall of the cylinder.
-
Hello,
I found a problem in my settings – sorry. With 100% infill it does fill.
But with 99% or below there is no infill at all.
I’m using 4.4.1 on Linux.
-
Hi,
I have the problem, that in one model, printed with the second extruder, the void in the cylinder can not be filled. As you can see in the attached screenshot, infill is set to 100% but the cylinder is not filled.
fundamental problem with cura (extrusion rate)
in UltiMaker Cura
Posted
With “by hand” I meant, that it’s not done by Cura. 🙂
As in nearly all cases, the amount of filament the hotend can deliver is the limiting factor to printspeed(s), Cura should be able to handle this.