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kcel

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  1. @Jeffg1 Just stumbled across this post on reddit, and it might help you: Someone made a Cura plugin that allows for controlling an external enclosure fan. So you arrange for the exhaust to be full when your printing PLA but minimal for ABS. This would require the enclosure fan to be somehow hooked up to your UM3X so it can be controlled by gcode. Absolutely no idea if it is possible, but something you could look into.
  2. kcel

    UM3: Problem with bed levelling

    It looks like the left is too far from the plate. So I would loosen the screw on the left. One thing I quickly learned was not to be afraid of adjusting the level during a print. Keep an eye on it as it lays down the filament and give the screw a quarter turn and watch happens. Repeat as needed until your satisfied with the first layer. FYI, it is possible for the glass to not be entirely level, so there you can never get it 100% right, but you should be able to get very very close.
  3. It sounds like you need to put the printer in a cage. Like the type of cages some companies put their rack servers in so they can be under lock and key. That way nobody can access the printer without the key, but the enclosures can be removed without compromising 'safety'. Unfortunately we live in a world of irrational lawsuits. Short of sticking your finger directly on the heated nozzle I think printers are pretty benign. What happens when someone stabs themselves with the palette knife trying to remove a print?
  4. kcel

    Printing with TPU95A?

    I tried UMs TPU for the first time last night. Actually first time I've printed flexible material of any kind. I printed a Benchy that came out very well, and that is a reasonably complex model, but does not require supports. I also printed a phone case which came out very nicely as well. According to Ultimaker's material guide (https://ultimaker.com/en/resources/49799-material-compatibility) TPU with PVA or Breakaway is considered experimental, so you may have to do a lot of fiddling to make it work. You have me curious, and as I have TPU and Breakaway currently loaded in my machine I may try a test tonight and see if it works out.
  5. kcel

    Dual Extruders UM3

    It seems the purge block is dependent on the combination of materials you are using. When I do a dual print with two PLAs or PLA plus PVA, Cura does not generate a purge block, but when I try printing ASA with Breakaway suddenly the purge block appears. You can always turn off the purge block from Cura. I've done it a couple of times without any noticeable issues on the print. I'm guessing their might be some circumstances that not having the purge block might lead to a minor error in your print.
  6. kcel

    UM3 vs Prusa

    I concur with @kmanstudios The only issue I've had with my UM3X is related to build plate levelling. The active-levelling feature can get itself out-of-whack from time to time and you need to do a manual level. Once you do that a couple of times its easy sailing. And yes, you'll need a 3D Solex for any abrasive materials like carbon fibre, or metal fill materials. The nice thing with the Solex is you can swap the nozzles with various types and sizes.
  7. kcel

    UM3 vs Prusa

    Supports work very well. One of the reasons I got my UM3E was for handling some prints where I wanted supports. I've worked with both PVA and Breakaway and they both work nicely. One thing to be aware of is that not all support materials work with all print materials. The Ultimaker material resource guide (https://ultimaker.com/en/resources/manuals/materials) is a useful starting point to know what is possible (though I'm sure it's possible to push beyond the boundaries mentioned in the guide). I have a Prusa as well. It's a very good machine. I'm curious what issues your having. Something to keep in mind: There is no magical 3D printer that just magically prints without issue. They all present a learning curve, they all have issues, even an expensive beast like an Ultimaker. So if your having trouble printing with the Prusa, you might run into issues with the Ultimaker that frustrate you as well. Having said that, once you learn how to work your printer, they will serve you well. Despite the few frustrations I've had with my Ultimaker I like it very much and it is my 'go-to' machine for many prints.
  8. kcel

    UM3 firmware options

    Change XY Offset is used to calibrate your print cores. If you install a new pair of print cores you need to do XY Offset calibration where the printer prints a pattern and you use that printed pattern along with a reference sheet (included with your printer) to set the XY Offset of that particular pair of print cores. UM3 should remember that offset from that point on. There are online resources and manuals available. Manual for the XY Offset is here: https://ultimaker.com/en/resources/23125-xy-offset-calibration
  9. kcel

    filament confusion

    There isn't a way to cancel that I'm aware of. Myself and others have brought this up in other threads. Hopefully a future firmware update will allow for this. Part of it has to do with properly controlling the heating and feeding of the print heads. There are certain points in the loading/unloading/changing operation where you might not want the user to be able to cancel, but I think there are some points where you could allow for it. As far as the cause, I think it is the NFC sensor. It expects you to add one roll of spool at a time. I remember during the first week of using my UM3E I had the machine turned off while I mounted two spools of filament with the expectation to turn the machine on and load them. The machine complained about too many filaments and I needed to turn off the machine, remove one of the spools and then turn on the machine and go through the loading procedure. As I have begun using some non-Ultimaker filaments I decided to unplug the NFC sensor and remove the rear spool holder. I now use two independent 3D Printed spool holders and just tell the machine what type of filament I'm loading.
  10. kcel

    Jumping UM3

    I'm really curious how this could happen. Having recently put my UM3E on a shelf (with my other printers) I feel the sudden need to tether it to something.
  11. kcel

    Heath Information

    One option is to get a air purifier for your office/room. A decent model isn't very expensive and it will refresh the air in the room and help filter out any nastiness. I don't print ABS because it is stinky and general a pain to print with. I do print PLA, various Co-polyesters, ASA (a variant of ABS without the stink), and other filaments and I don't notice much of any smell or irritation even when I don't have the purifier running. As others have stated, buy your filaments from reputable manufacturers, avoid no-name brands even if the price is attractive.
  12. kcel

    Failure States

    Ah, cool. Thanks for that.
  13. kcel

    Failure States

    Hi, I've had a couple interesting failures in the last week, and I don't think the printer handles either one entirely correctly. I'm hoping some updates to the firmware can be made to make the printers a little more idiot proof: 1. A couple of times I've received an ER18 error indicating an inability to communicate with the print head. This error has been resolved just by cycling the printer. The problem is when the error has occurred it happened mid-print, leaving the nozzle in close contact with the print. The cooling fans were still on so I think it might be fine but I'm paranoid about what might happen if that failure were to occur when I'm not home. When ER18 error occurs I wondering if the bed should lower to make sure the print isn't anywhere near the nozzle. 2. My printer lost power during a print. User error, no worries. When I restarted the bed stayed in it's raised position, again with the nozzle too close to the print. It asked me to remove the print, which was hard because the nozzle was in the way. So I confirmed that I removed it, then went to the build plate menu and lowered the build plate and removed the print and cleaned up the bed. Then, suddenly, the build plate raised up and it started to prep things to do the print again. Bonus points for keeping the print in the queue, but I think it should have asked me if I wanted to start the print again before doing anything. I had to confirm that I removed the print in order to access the controls to remove the print. If I had not removed the print, or had some issue removing it, bad things would have happened. So again, on restart of the printer after a failure, it should lower the build plate and it should make sure to ask for confirmation before restarting the queued print. Not earth shattering problems, fairly easily resolved, but the printer could be a bit smarter about it. Cheers!
  14. kcel

    CPE Loading

    Ok. Appears to be PEBCAP issue (Problem Exists Between Chair And Printer). After fiddling a bit I did another trim of the material and it suddenly pushed through. I didn't have problems loading PLA, PVA, Breakaway so I guess this one confused me a bit. Please return to your regularly scheduled forum.
  15. kcel

    CPE Loading

    Hi All, I have an odd problem. After weeks of playing with nothing but PLA and various support materials, I decided to try some CPE. I can't seem to load into the feeder. Normally when I load the filament into the feeder I push it until I can see it in the bowden tube and then I tell the printer to load. For CPE I can't get the filament pushed through the gears of the feeder. The feeder itself does not appear to be jammed or clogged because I can grab some PLA or PETG and push those through the gears with no problem. I've released the tension on the feeder as much as I can with no effect and I've done the usual thing of trimming the end of the filament with a bit of a point, but it just won't pass through the gears. An odd thing regarding this CPE is that the boxes in comes are plain brown, not the white boxes like my other UM filaments. And there is no sign of the RFID tags. I've removed the RFID reader from my UM3X because the rear stacked filament holders have started to bother me so I can't be positive, but there are no warning stickers about NFC. Did I receive some older version of the filament that is for some reason incompatible with the UM3X? I've tried two different rolls with the same problem. Any ideas would be helpful. Cheers!
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