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paulsroom

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  1. I used spiralize in Cura to print a multi-faceted vase. Although it printed fine, with the resulting thin wall you could squeeze the finished model just from gentle holding. This vase would hold artificial flowers okay but was rather unstable at holding a bunch of fresh flowers in water. So with a different vase but equally complex shape, I passed it through Meshmixer using the hollow command. Because this command treats the object as internal hollowing I had to slice the top thickness using plane cut to make it an open vase. But what I now had was a vase with a much thicker wall and greater s
  2. I was using Windows 7 on a laptop with an old version of Cura. I've tried the latest version of Cura with Windows 10 and the graphics card is Radeon RX Vega M GH Graphics. The file loads but it says it's non manifold and won't print.
  3. When I load a particular model into Cura it shows the shadow of the model but no model to slice. The shadow is kind of like Peter Pan and detached in that it's as if there's a model there but it's so far off the print bed that you can only see the shadow. I've looked at the model in Meshmixer and although it's a very big size, it does show in all its detail. I've used the inspector in Meshmixer to confirm that it's okay to print and also moved it around - and even plane cut a section - but I can't get the model to show in Cura.
  4. From various investigations, I believe that the current specifications of the feeder spring are Outside diameter: 7.5mm Inside diameter: 5mm String diameter: 1.2mm Height: 20mm But I believe that there has also been a slightly weaker spring fitted to UM2 at some point Outside diameter: 7.5mm Inside diameter: 4.5mm String diameter: 1.2mm Height: 16mm Would this weaker spring still work okay and lessen the occurrence of filament getting stuck in the feeder?
  5. Does anyone know what the spring specifications are for the compression spring in the feeder unit at the back of the machine? And what are the details to order the specific one from a spring manufacturer? I had to disassemble the feeder unit for print core 1 because the wheels inside the feeder had crunched up the filament and was actually grinding it into powder. I discovered this when the filament got thoroughly stuck and would not unload. Unfortunately, although usually being very careful to put all the parts in a little container, the spring shot out and is somewhere in the room. At l
  6. Thank you geert_2 that is an excellent link with very useful items and ideas. I believe I may now have cleared my filament stuck issues, I have thoroughly cleaned the print core area and Bowden tube with compressed air and the filament loads okay.
  7. I don't think that this thread has been messed up my question, because the link given by fbrrc8-erin deals with all Utimaker models - 2, 2extended, 3 and 3extended. The principle is the same for all. The Ultimaker 2 has one printcore while the Ultimaker 3 has two printcores. The Bowden tube and feeders are the same, just one set for 2 and 2extended and two sets for 3 and 3extended.
  8. The filament in core 1 has stuck a couple of times recently and would not unload without me pulling it at the feeder end. Since initially the filament was ColorFabb PLA and the proprietary Ultimaker PLA, I wondered if the composition was slightly different and thus sometimes result in sticking. I contacted ColorFabb and they didn't seem to know - maybe no one has ever asked them the question. Anyway now it is the proprietary Ultimaker PLA that has got stuck, but worse, it has broken off in the feeder and I can't load any filament. I am assuming that there is a piece of filament stuck in th
  9. I happy that I have correctly levelled the print bed and that the glass is either very clean or I am applying glue. Just before the print core gets ready to print, it extrudes about a 2mm strand of extraneous filament. This hangs from the nozzle and seems to interfere with the first printed line. As this is usually the skirt or brim line, it doesn't matter, if it is then absorbed into the further lines of this type. But then I think – I can't easily tell – when the nozzle moves to the model printing outline, it is still extruding this extraneous strand. That means that it doesn't starting
  10. Well I only use the glue stick that was supplied with the printer. I'd have thought that hairspray was rather fierce for an adhesion method. Yes I think that it would be an idea to slow it down and I'll probably try that.
  11. Well before I went through the levelling procedure, I had washed the glass plates in warm soapy water and dried it thoroughly. First with a cotton cloth and then with a microfibre clth to ensure no strands of cotton remain or areas of grease. I also only touch the glass at the edges. But I'm going to clean the glass again before anything else.
  12. The Ultimaker 3 recognised the reels when I loaded them one at a time. And yes, the PVA filament has the read label on the side which is away from the filament holder. So it can only be fitted backwards, otherwise it won't be loaded correctly. So when I have the PVA and PLA loaded the read labels are sandwiched.
  13. I wanted to use the new Breakaway support material and also start dual colour printing - which I have not yet done. So I have had to change print core 2 from BB to AA. This seemed like an easy operation and it slotted in okay, but then of course I needed to re-level the print bed for the new arrangement. Well as you can see from the attached print, this hasn't worked properly. What's happening is that at some positions on the first layer, it is not sticking to the bed. As a consequence the nozzle grabs this loose string on its next path and simply destroys the print before it gets going.
  14. A couple of times - but infrequently - my Ultimaker 3 has displayed the message 'too many filaments identified'. It happened soon after I bought the printer and now again after I changed the printcore from BB to AA. I've loaded Ultimaker PLA to ensure that everything is compatible. Since the display won't disappear until I turn the printer off, is there a way to cancel a command and what might be the cause of the confusion?
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