GoncaloLaranjeira
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Posts posted by GoncaloLaranjeira
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Hi everyone!
Lately I'm getting a lot of 2 colored prints orders.
I'm going to assume the 1st color as the main object color and 2nd color as the detail/text/etc color.
I was having some quality problems when printing thin text with the 2nd color but got them resolved by reducing the Layer Width in Cura to 0.26mm and maintaining the default values of "Initial Layer Line Width" to 120% and "Initial Layer Horizontal Expansion" to 0mm (in all my prints I use 100% and -0.2mm respectively to annul the "elephant's foot").
The problem is that I enabled the "Prime Blob" for both extruders but only the 1st printing extruder (in this case the 2nd color) will prime blob and will start printing fine, but as soon as the extruder changes to the 1st the filament is not "Prime Blobbed" and the filament is far from the nozzle causing it to not print anything until some time (until the filament reaches the nozzle), so I have to do some baby sitting and after the nozzle changed I got to the 1st extruder opened the feeder lever and pushed the filament into the feeder until I feel it can't go further (reached the nozzle), and it worked fine, but because the 2nd extruder was also printing on top of the object it would fail if not "baby sited" 😞 I resolved this by using a prime tower 🙂 .
Here's the result:
I'm currently printing a custom handbrake for racing sim games (e-brake) and one of my orders requested a red 1st color with the text in 2nd color.
The issue is that the prime tower is only printing the 2nd extruder when there's a layer with that color (really don't understand why), so when it arrives the actual 2nd color printing layer it's not printing anything because the filament is far from the nozzle:
The other issue is that if I push the filament to the nozzle it will print the layers correctly but there's the chance of getting this blobs in the print:
This blobs cause the nozzle to hit them in the next printed layer and end in a massive layer shift 😕
I resolved the under-extrusion on the letters by instead of printing only the letters with the 2nd color by printing an entire 1mm layer of it and the result was perfect!
But got the shifted layers (probably a blob) 😕
Gonna re-print right now with a custom Prime Tower to see if it resolves the issue. Fingers crossed!
If someone knows how to resolve this problem with the second filament not being prime blobed and being so far from the extruder please help!
Thank you all! -
Hi everyone, thanks for your replies!
I managed to reassemble the nozzle on the extruder in the first attempt, after unclogging it with a 0.4mm needle.
I currently have so many prints ordered that now I can't try to switch to a spare nozzle because there's always a chance it won't be perfect on the first time.
When I have some time to spare, I'll do it and put the process here :)
Thanks!
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Hi everyone,
I have an UMS5 and I would like to know if anybody already uses or used a different extruder in the original Ultimaker print core (AA 0.4).
I found this extruders:
https://www.3djake.com/micro-swiss/coated-nozzle-for-ultimaker-3
https://www.3djake.com/brozzl/hardened-steel-nozzle-for-ultimaker-3-aa
Do anyone has some experience that can share about this topic?
Thanks!
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Hey everyone, just to clarify that I could unclog the nozzle and printed 2Kg of PLA so far with no problems at all!
What I did was pre-heated the extruder to 280ºC and then with a 0.3mm needle work my way from the tip to the core, slowly but strong, and voilà!
Thanks everyone for the help!
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2 hours ago, Smithy said:
Try to heat up the nozzle to the nylon print temperature and try again the clean filament. If it doesn't help, you can try to push gently with a small needle through the nozzle. It could be that the glass fibers are clocking your nozzle. Thats also the reason why most abrasive materials should be printed with 0.6 nozzle.
Yes, will try with a needle with 0.4mm or less! Thanks!
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Hi guys! thanks a lot for your info!
I'm gonna try a needle with 0.4mm or less.
QuoteAs far as I know, you can't buy the "nozzle only" you HAVE to buy a new extruder.
We've experienced this, and rectified it by using a wire off a "Wire Brush"......yes a wire brush, heating the nozzle to operating temp, then pushing the wire through the nozzle hole then did a HOT and COLD pull, it now works a treat. 👍
Isn't a wire brush too abrasive for the inside of the nozzle? I read somewhere that if you get abrasive materials into your nozzle, the plastic that you'll print after, will tends to stick a lot more to the irregular walls of the nozzle..
QuoteStandard nozzle are too small and don't fit. There are one or two 3rd party vendors which made replacement nozzles, but I don't recommend it. Why? Because the problem is that the core is very fragile and you have to tighten the nozzle very hard back into the core. If you don't do that, the risk that filament comes out on the upper part of the nozzle is high and in that case you can fill and damage your whole print head. In other cases, the print core breaks when you screw the nozzle in.
Smithy, yes I agree, the print core is too fragile, but you can operate it by always grabbing the heating block, but yes, it's definitely not recommended taking the extruder apart.
QuoteAnd to answer the question about AA 0.4 and AA 0.8. You can adjust the line width in Cura, that's usually enough, but there us also a way to reprogram the Core to an AA 0.8. Search the forum for instructions, it is only a special gcode.
Will check that, thanks a lot!
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Hi everyone,
Today I got my AA 0.4 extruder of my UMS5 completely clogged, tried cleaning it with clean filament (hot pulls and cold pulls) but I can't get anything out.. It even exploded a little bit of filament through the top of the extruder away in on of the pulls, when I was trying to push the filament down.
I already disassembled the nozzle form the extruder, and now I wonder if is it possible to only purchase a nozzle instead of a complete extruder..
If yes, where? Is there other better options, like switching to an Olsson Ruby nozzle?
And other question: can you actually switch to a 0.8mm nozzle and go around Ultimaker software to mimic a AA 0.8 extruder, instead of buying a full AA 0.8 original extruder?
Some feedback would be very appreciated! Share some experiences when trying to do any of the above if you have some!
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Oh no.. I tried to print on PLA a simple object right after tried a small Nylon object and now the extruder is clogged and I can't unclogged it, even with clean filament..
What do you suggest to unclog the extruder??
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Hi everyone!
Just bought a filament from the Smartfil brand called "NylonStrong" and I was wondering how bad can the filament affect a standard AA 0.4 nozzle.
This filament is intended to print between 250 / 260ºC and the printing bed should be at 90 / 100ºC.
The brand even advises:
QuoteDue to glass loads, this material is highly abrasive so to avoid wear in brass nozzles it is necessary to use hardened steel nozzles.
What are your thoughts? Should I definitely not print using a standard AA 0.4 nozzle?
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Hi everyone!
I have a UMS5 and I can't print more than 2 to 3 layers of Timberfill® wood filament..
The first 2/3 layers it prints really well and then it just clogs 😞
The filament was put on the oven at 50ºC for 3 hours to remove any possible moist, just like Timberfill® suggests:
QuoteThe conditions to achieve optimal level of moisture are 50 °C for 2–3 hours
I have a 0.4 Nozzle and my current setting for the wood printing are the follow:
Layer Height: 0.2mm
Printing Temperature: 175ºC
Build Plate Temperature: 47ºC
Print Speed: 70mm/s (walls/infill/initial layer)
Retraction Speed: 25mm/s
Retraction Distance: 10mm
Z-Hop when retracted: Disabled
Printing with a 2 line skirt to start flowing some filament (because filament can't be in the nozzle for too long, otherwise it burns and consequently clogs..
UMS5 uses 2.85mm filament, is this the main cause of the clogs? Because the Timberfill® brand recommends:
Quote0.6/0.8 mm nozzle for 2.85 mm filament for printing with Timberfill due to the fillers contained in the filament
Do you guys have any experience printing with this wood filament?
Thanks!
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Thank you!
The issue was solved by doind that!
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Hi,
I'm currently trying to print a model, but everytime I multiply it Cura gives me this first layer's "bug":
As you can see both top and bottom multiplies are ok with a all filled initial layer, but the models in the middle are missing some lines in the first layer..
Anyone knows why this happen?
Thanks!
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Hi Bobkelley22,
You still having the same issues? Sorry for taking so long...
On 1/15/2021 at 3:01 PM, bobkelley22 said:I am having similar issues with my S5. Would you happen to have any photos that would show the problem with the screws?
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On 12/7/2020 at 11:58 AM, CarloK said:
What is your Cura version?
4.8.0
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Hi everyone!
I'm currently trying to print a model that after Slice shows some small weird print moves that I want to get rid of so it prints a bit faster.
I attached a photo so you can better understand what I am talking about 🙂
What can I do to change it or is it completely necessary?
Thanks!
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And there it was the problem!
I printed 2 tests: 0.2 and 0.3 layer height, and everything worked great!
Thanks everyone!
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Hi everyone,
This printer is from my company and I got to use it for a while now. I recently discovered that the screws that create tension in the feeder where misplaced, making both feeders to have the tension indicator at the top..
As soon as I fixed the screw and placed the tension indicator at the middle I printed a test object at 0.3mm layer height and the print was successful 🙂
I'm going to try a bigger print tomorrow at 0.25 and see how it goes!
Thank you for your suggestions!
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4 hours ago, Smithy said:
Printing with 0.2 should be no problem at all, so if you get under extrusion you have a different problem. Which material do you print? Do you print single your dual?
I would first try to print with a default profile without changing anything.
Do you print with PVA too? Do you use the BB core for PVA? Is you PVA material dry or is it soft and sticky?
Have you cleaned your print cores with hot/cold pulls as described on the UM website?
Hi!
I'm printing with normal PLA and this is happening with both extruders. Doesn't matter if I do a 2 print core job or not, the problem sustains in both works..
I tried to use the "Default Fast 0.2mm" or the "Draft 0.2mm" without changing anything on the profiles but the problem sustains..
I didn't tried PVA in a looong time. I'm using AA0.4 for PLA and other materials, except if I want to print with PVA I would change to the BB0.4 print core :)
I cleaned all the print cores with hot/cold pulls with cleaning fillament.
Weird is that everything is perfect if I print at 0.15 or below, higher layer heights gets under extrusion and makes the printer fails and get the "material appears to be missing" error.
Thanks!
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Hi!
Was this issue resolved?
I'm having a related problem here..
When I print with Cura default profile Visual 0.15mm all my prints are perfect, even with the 70mm/s speed, but as soon I try to change to an thicker layer height all goes wrong.
I tried to reduce a lot the speed (40mm/s) and increase the flow rate (150%) but the prints just fail due to under extrusion. The printer gets the same old "some material appears to be missing" error and it's a crucial error, because after that error all layers in the gap where the error happened will delaminate..
I would like to print some tests in less time that's why I wanted the 0.2 layer height, but due to the decrease of the velocity to try to overcome the under extrusion (with no success) it gets even more printing time..
I have both 0.4AA heads btw and both show the same behavior..
Thanks!
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1 minute ago, aag said:
I had one feeder replaced on warranty, and that eliminated the issue. The filament channel within the feeder can become worn out pretty badly: the knurled wheels of the feeder are of hard metal but everything else is wobbly plastic. It would be nice if some third-party would be a more sturdy replacement feeder, all in metal.
Will check with them to get a new feeder 😄 but I don't think my printer is still on warranty 😕 It's my company printer..
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Just now, maht said:
This is the result of a false positive from the filament flow sensor in the feeder of the S5. You can disable it in the menu of the printer as a workaround if needed. I'll also let the team know about this.
I tried this workaround once and the final result was pretty visually bad 😕
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Hello,
I'm getting the "One or more material appears to be empty" error message too and it's completly random (I think).. Sometimes it print very big models (like 11 hours printing jobs), other times it starts the error message in simpler models (3 hours print job). All this times if I keep pressing "resume printing" the S5 keeps doing it's job, sometimes in a range of 1 hour I press 5-20 times and the print job keeps going, sometimes it actually passes by the hard part, other times it keeps getting the error...
I'm currently doing a print job of 8 hours and the printer is "jamming" always in the same spot (first image), if I keep pressing the "resume printing" the printer prints more 1-10 minutes and then gets the error message... I canceled the print job 1 time with a old spool because I couldn't be on the printer and I know I would loose 1-2hours just waiting and pressing "resume printing".
Today I placed a brand new spool (PLA), a brand new nozzle (AA 0.4) and changed the print job to be printed on the extruder 2 only so I would discard if it was an extruder 1 "sided" problem.. But nah.. Same, same.. 😞
Is it about some models, is the printer?
Some help would be apreciated...I attached also the Cura project file.
In this print job it get's the error always in the finishing layer of the center.
Dual Extrusion Problem
in UltiMaker 3D printers
Posted
Yep I was using Cura 4.9.
Looks like a easy fix 😄
Thanks @Enigma_M4 !