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nssorensen

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Everything posted by nssorensen

  1. Thanks for your feedback. Material > Initial Layer Outer Wall Flow set to 110% - I never adjust these myself but 110% appear to be default. I'll adjust it and see if it makes any difference. I did one print with a 0.2mm Brim Distance; perhaps a bit better but nothing major I would say. Currently printing with 0.4 mm Brim Distance then I'll start adjusting Outer Wall Flow. Appreciate that you take the time to help with my 3D printing problems.
  2. The 3mf file was created from what I printed. I've also attached the g-code this time UM2_2x2x6_with_magnets_and_tabs.3mf UM2_2x2x6_with_magnets_and_tabs.gcode
  3. Here is the 3mf file. UM2_2x2x6_with_magnets_and_tabs.3mf
  4. I never really liked the Brim functionality because removing Brim's was always difficult and left residuals that was difficult to "clean off". When Cura 5.4 was released one of the improvements was indeed "fixing" Brims and when I tried it it actually worked really well and my brim came off easily and clean. I'm now at Cure 5.6 and when I print with brim's it's back to pre-5.4 (I did not try Brim's with 5.5) I can't easily pull of brims - even with pliers it's difficult and the result is ugly. Has anyone noticed the same thing? Is this a regression or could I be doing something wrong? I haven't changed any Cura settings between 5.4 and now and of course Smart Brim is enabled. My printer is a Ultimaker 2+
  5. Hi Torgeir I think you nailed it! Thank you. I did try a 3rd role of filament and it prints beautiful! I put my other filament in the oven to dry it a bit and will try again once that's done. Appreciate your advice and will try to figure out a better way of storing my filament. Thanks, Robert I guess I just lost a good excuse to buy the Ultimaker S3 :-)
  6. I can't exclude that my filament has absorbed moisture. The filament shown in the picture is Tan Pro Series PLA from Matterhacks and I bought it fairly recently (end of may) and haven't used all that much of the filament. The other filament that I tried is Gizmo Dorks (bought from Amazon). This I've had for a long time and used a lot of without problem. Never the less - let me try a new filament and report back the results. Thanks,
  7. Hi Thanks for commenting on my post. Regarding the missing layer. I first noticed this on a few single layers in the beginning of the print (This is shown in the picture in my first post) It then becomes worse in prints after this with more layers and eventually all layers having insufficient filament. Temperature is set to 210ºC and I don't use any adhesion no my plate when printing PLA. I do though clean the plate with a damp cloth before printing and before the bead heats up. This has worked great for me for many prints. As I see it everything points towards wrong temperature despite having changed both sensor and heater haven't changed anything. Why is that my opinion: 1) When I feed "new" material the printer does not have any problem pulling the material to the print head and eventually filament comes out out the nozzle. However - the flow seems slower than usual. 2) Filament that's stuck to the nozzle - in the past it was easy for me to wipe if off with a piece of cloth - not anymore. The filament is more "sticky" than fluid. 3) If I pushe material directly to the print head ( by removing the Bowden tube from the print head and push material that way ) I can press material through the nozzle but even then I can't push it so the flow is "normal" meaning the filament flows slowly. 4) When I retract material during the change material procedure - that works Ok but it there is a long thin thread of filament at the end 5) In the beginning of the print when the nozzle extrude material - in the past the material flowed down to the bed and form a nice cylinder; now very little comes out and sometimes not enough material to even reach the bed before the print starts. 6) When I print the brim the nozzle pulls the material with it. If I pause the printer before the actual print starts and clean the brim from both the bed and the nozzle generally the first layer prints OK but I do print very slow (like 10 mm/s). Once the 2nd layer start, the speed goes up and the fan kicks in - my problem starts. Sure I could reduce my print speed in general and perhaps not use the fan - but there is a problem and I would like to solve it. As for the assembly of my print head - I have attached one but I've taken this apart so many times that I'm fairly confident that it's assembled correctly. I guess the only thing I haven't tried is an accurate measurement of the nozzle temperature (I don't know how to do this correctly and as in my original post - I did try with Weber thermometer) but given that sensor and heater is replaced the only thing left would be a "damaged" ADC on the controller board. Is that even plausible ? Is it possible to use the temp sensor input on the controller board? Or does it use the same ADC ? Thanks,
  8. I know that there are several threads on under-extrusion that I could attach my problem to but I also don't want to distract from other users problem - how similar their issue might be so pardon me for starting yet another thread on the topic of under-extrusion To begin - I have an Ultimaker 2+ and has had it for a couple of years - printing on and off. Lately I've been printing a lot and almost exclusively used PLA. I've been printing several things and my problem started as few layers experiencing what I consider under-extrusion. I've attached a single picture of this. A few layers into the print you'll see "holes" in the print but the print recovers. Subsequently the under-extrusion got worse and eventually my prints wasn't able to finish. What I observed was that the filament didn't flow as easily as it used to. When I start a print - once the printer starts pushing out filament it tends to stick to the nozzle whereas when things were OK it would feed it sufficiently fast so that filament would reach the glass plate and formed a nice cylinder before the actual print started. If I move forward with the print anyway - what I have observed is that the printer struggles with printing the brim (material sticks to the print nozzle). If I raise the nozzle temperature by 10 degree the printer is usually able to finish the first layer OK (I print the first layer very slowly) but when the 2nd and 3rd layer is printed problems starts and eventually the nozzle pulls the print from the glass plate and pulls it along the print path. So - here is what I've done. 1) I did change material to a different brand of PLA but that did not change anything. 2) I did search online and found suggestions to change the TFM coupler which I did. That didn't help either but I got suspicious that my spare coupler were bought in China so I ordered new ones from a US vendor. Still - no improvements. 3) I did take a look at my feeder - took it apart but everything looked OK and I have not had any problems feeding material to the printer. When I insert material it appear to be fed normal up through the tube to the print head - suggestion that the feeder is able to easily move material 4) I recently bought the Olsson Ruby Nozzle and has properly used it for ~20-30 hours. Never the less I changed it back to one of my old nozzle but that did not make any change either. I even tried a completely new nozzle and still no improvement. 5) I did try a different Olsson block as well but still - no improvement here either 6) Thinking this could be a problem with heating the filament I did try to measure the Olsson block with a Weber Grill thermometer. This did show a lower temperature than what the build-in sensor reported and also - the filament that did come out seemed a bit more sticky and solid that I think it were when things were OK. Thus - I ordered new sensor and new heater and replaced these. You properly guessed the result - same problem (as in no improvement) 7) Even when I feed material manually (heating up the nozzle and pushing filament directly into the printhead - I can't seem to get a decent material flow. 8 ) I have not made any change in Cura. The prints I been struggling with are prints that I've printed successfully before without any issue and without any change to any g-code. 9) I did do a factory reset of my Ultimaker 2+ printer but again - no difference in outcome. I have not replaced the Bowden tube because I don't think there is anything wrong with it. Material is fed without any problems, extracting material is also not a problem and experiment 7) above completely eliminate the bowden tube - which by the way looks fine. And pushing material through the tube manually is not a problem at all. No resistance is observed what so ever. Does anyone have any suggestions on what could be my problem and what experiment 9 should be - or even better what the solution to my problem is? Thanks in advance
  9. I have an Ultimaker 2+ and I've been using it on and off. Over the last couple of weeks I've run into a few instances where the printer just stop in the middle of a print. One time I was next to the printer and in that case the printer stopped and the print bed just started to drop down (like it was completely exhausted) Other times the printer just stopped completely with the printer bed staying lifted and the nozzled "glued" to the cooled down 3D print. I'm pretty sure that the G_code is OK because the last time it happened was a repeat print of a print I did earlier in the day and it printed without any issues. Anyone have any suggestions what this could be? Thanks in advance
  10. Thanks everyone for your suggestions. I ended up reducing the print speed down 20 mm/s and that did help. As geert_2 pointed out - I also did notice a lot of goo's accumulating so I ended up cleaning the nozzle on a regular basis during the print. I guess the next thing to try is a lower print temperature.
  11. I'm using a noozle temperature of 250 and a plate temperature of 85 (eSUN recommend this temperature) and I read somewhere that PETG needs a high bed temperature. I do use glue on the bed but I did not change the speed but used the "default" for CPE material in Cura 4.0. Will try a lower speed.
  12. I have problems when printing with PETG material (I only tried material from eSUN) What happens is that occasionally the printer leaves "holes" in my print (i.e it doesn't dispense material) I'm not sure what can cause this (picture attached) In this particular case: 1) The bed was leveled prior to the print 2) The bed was cleaned prior to the print 3) The eSUN filament is unpacked a couple of days ago (i.e new) 4) Settings similar to Ultimakers CPE material. Anyone has any suggestions? Thanks,
  13. Thanks gr5. I'm a bit confused though. I supposed the first section of your reply suggest that USB which served the computing community for a couple of decades suddenly has become unreliable when used with UM2+? In my case - I'm not talking about failure after some hours but "unexpected" behaviour right away. With respect to the 2nd half - I have not found where I can set reprap mode. Appreciate any guidance. That said - if a mode or function in Cura is either not supported or in early beta-state (perhaps even alpha) - shouldn't this be highlighted to the user when selecting this function ? Sure - the software is free but the printer is not and in my case - I do feel that if the combination of the software and the hardware can damage the hardware there ought to be amble warnings.
  14. Hello I've had an Ultimaker 2+ for a some month. So far I've used an SD Card to transfer STL files and print from this but I recently hooked the printer up via a USB cable thinking this would be easier. Cura 2.3.1 immediately recognized the printer and offered an "Print via USB" option. However - when I selected this option with a design - here is what happened. My printer started immediately attempting to print. It ignored that the temperature of the print-bed and the nozzle were not even close to the temperature set my material settings. Needless to say that printing something without the material heated to the right temperature yielded nothing. I then cancel and the printer just stopped. Nozzle stayed were it was and the print bed didn't moved! I then selected "move the nozzle home" option from the Printer control. This did home the nozzle but the print bed remained where is was resulting the the nozzle hitting the back glass-bed clamp as it returned. What am I doing wrong ? thanks in advance, Robert
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