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SilverDynamic

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Everything posted by SilverDynamic

  1. Thanks for the help guys! I had this problem before and it is temp related. In this case though I increased the print temp by 5 degrees and the problem was solved. I'll check my fans though as that's great advice and I can see how it causes an issue. However I'm now wondering if that in all the commotion around checking/cleaning tubes etc I might have cleared said fan and...
  2. I'm looking for UM3 firmware circa 5.1.xx I recently upgraded to 5.3.0 to enable PETG printing, made a few good prints then started getting spongey prints (lack of extrusion/grinding). I did all the usual checks and a whole bunch of maintenance with no improvement. I changed back to PLA and the same thing! I've even swapped out the AA core for another AA core and still the same problems. I'm using known good print files so that isn't the issue. Anyway the only thing I can think of is that it could be the firmware. So where can I get older versions of the firmware?
  3. Thanks for the constructive reply 😄 I did look for an option to change but totally failed to find it! I upgraded from 4.8 ish and in all the previous 4 yrs of using cura have never seen this multicolour version of preview as a default!
  4. Issues I have: 1. "Support Placement" is missing from Per Model Settings. This is bad. 2. Colour scheme for preview is awful and confusing. One colour was enough for me to figure what was happening but I cannot tune this version to that. 3. Icons for settings have changed. Why? Nothing was wrong with the old ones so this unnecessarily confuses things. Sure I'll learn them in a few weeks, but why do I have to, what is the improvement?
  5. Occasionally when attempting to drag and drop STL's into Cura it decides to open each one individually. It also does this when selecting STL's in a folder even if I'm just moving them around, I guess it sometimes detects a poorly timed mouse click (or release and decides) that I wanted to open all of them in separate instances. Predictably this causes the whole Cura application to grind to a halt and I have to manually kill these instances in Task Manager. Is there anyway to prevent Cura from opening multiple instances like this?
  6. Truly this is throwback personal computing reminding me of x086 series computing performance. Is there nothing that the community can offer?
  7. What information would you like? Sometimes it works fine. Mostly not though, particularly bad today.
  8. This has been a constant issue for me since I think around 4.2 But I thought I'd got around it by disabling network printers via the Market Place but this no longer seems to works with 4.8 (I also disabled update checker just in case). Basically I'm trying to position multiple small models on a plate and the drag function is virtually unusable. Sometimes it takes upto 10 seconds for the model to even start moving then it's jerky as hell. All in all work that should take a few seconds or a minute or two is taking many times longer. It's got to a point where I'm looking for new slicing software - which after spending 5 years or so learning Cura is going to be a nightmare in itself. Not Happy.
  9. Time for another update! This issue recurred again but it's September in Scotland and a cool steady 17 degrees C in the house, plenty of printing being done successfully but once again on large flat bottomed prints the same issue. OK so after a few Cura updates the print temp had reset to 200 degrees C but in the normal course of printing this was not a problem. Then a project with a large bottom surface area came up and the same again. This time when I tried to extract the filament it got stuck in the Bowden tube because the piece from the hot end had got excessively thickened after melting. If it's only 200 deg, why is it melting? So I checked in the advanced settings and found TOP/BOTTOM SPEED which was set at 38mm/s as opposed to 100 mm/s for normal printing. Which gives the filament time to heat more, melt and block off the nozzle. I punched the Top/Bottom Speed up to 100 and tried again at 200deg. Of course this will only be an issue if your bottom layer is a large area which gives the PLA time to fully melt as it's sitting in the extruder for a long period. I tried the new setting of 100mm/s Top/Bottom Speed and a perfect print. ------------- This never happens on my UM2+ machines so I checked the setting for Top/Bottom Speed and the default here is 50mm/s. TL;DR - the real problem is the Top/Bottom Speed setting. It's too slow and allows the filament to fully melt and jam off the nozzle.
  10. Hi, I wanted to update this thread because I've recently had the exact same problem and came by a solution that allowed me to continue printing. To cut a long story short it was the same issue - suddenly all my prints failed shortly after starting with grinding. Although later I did establish that prints with a much smaller X/Y travel worked fine. I re calibrated everything, tried different high quality filaments, replaced Bowden tubes and nozzles and used both extruders. (UM3+). I came by this thread and was intrigued by the proposed route cause - high temperatures and high humidity. I live in Scotland and while the summer has been good so far it CAN NEVER BE TOO HOT IN SCOTLAND! However the temperature was 20+ degrees Celsius. After pursuing a mechanical issue as the cause I hit a dead end then some things came together: I then thought back to the ambient temperature issues in this thread. Yesterday when I replaced the Bowden tubes it was ~25 degrees and very humid. The hottest day of the year so far. This reminded me also of a comment UM support had made about pooling melted fluid in the nozzle. When this problem first occurred I noticed immediately that the ends pulled from the nozzle were unusually thick, basically the same dimensions as the metal tube. And then I realised that this was because the filament had fully melted. I'd been surprised that I was having the same issue on both extruders so it couldn't really be the Bowden tube as ext 2 has hardly been used. So I then reduced the print temperature from 200 deg to 185 deg and the problem was solved. I've since upped the build plate from 60 to 65 degrees as there was some minor adhesion issues (first layer bubbling). But since then it's remained hot outside (relatively speaking) here and I've done 3 major prints with no issues. But I'm still not sure why my UM2+ in the same location is merrily printing away at an unchanged 220 degrees... Thanks for all the contributors to this thread. TL;DR I solved this issue by reducing the print temperature from 200 to 185 degrees C. Pictures: 1. Failed print. 2. Jammed in tube guide for extruder 2. 3. Thickened end after melting.
  11. This has happened several times now and is becoming rather frustrating wasting both time and material. Often when I send a new job to the printer it just goes ahead and reprints the job it did last. Today it did it after a cold restart of both the printer, the PC and obviously Cura. It can happen at any time after an aborted print in which I am careful to select NO to retry? It can happen after a fresh start or after successful completion of a job when I send a new job. Today despite having cleared the printer last night and "removed the print" when I fired it up the "print removed" query was back again. This delayed the print and when I cleared it it just printed the last job again instead of the new job, which was the only job that was queued... obviously because I had only just turned the whole lot on. I am utterly baffled. Firmware is and always has been the latest version. So is Cura.
  12. Add "--single-instance" as a command line argument to Cura.exe in Fusion. Thanks for this, could you provide a bit more info on how to do this? I can't find anything I can edit this into within Fusion??? Maybe a screenshot if possible
  13. There is no change and this problem still exists. From the Fusion end I am able t select Cura as a custom 3D print app. But in doing this every model I send to print opens a new instance of Cura.
  14. I'm in the middle of migrating my work from a Mac running the latest OSX High Sierra to a Windows 10 PC. My 3D design platform is Fusion 360. When I installed Cura 3.0.4 on the Mac and tried to send a object I got the message that this version of Cura was not compatible... so I reloaded 3.0.3 and all was fine again. Now I'm working on the PC I've loaded up 3.0.4 and when I send a file to it from Fusion nothing appears in Cura. Unfortunately I cannot seem to find 3.0.3 to install and try. Anybody got any ideas or similar experience?
  15. This is brilliant I'd really like to know what software you used to design this?
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