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Daid last won the day on April 23

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About Daid

  • Birthday 01/01/2015

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  1. Daid

    Ultimaker 3 firmware...Wishlist item!!!

    If there is no material present in the printer, you can just swap a printcore without using the menu. (As long as it is cold) bit of a workaround, but saves a lot of time 😉
  2. Daid

    Layer resolution range

    3/4 of a nozzle size is pretty much the upper limit for a layer height. So 0.3 is possible with a 0.4 nozzle. But with thicker layers, you want a larger nozzle size. 0.2mm is our highest layer height for our provided profiles for a 0.4mm nozzle.
  3. Note that the active leveling system is very sensitive. Most likely, the system is introducing some kind of "softness" in the system that the active leveling cannot handle. Which looks for the sharp transition of not touching the bed to touching the bed. It has not been engineered with this upgrade in mind. And it was already complex enough to get working without this. (As far as I know, these upgrades are not officially supported, sorry)
  4. Amount of filament left will be be an indication. Note that we already track this with NFC spools, but only by the amount that we think we use, and thus is off due to material slip. Also, with the end-of-filament detection of the flow sensor, why not start a print even if there isn't enough material on a spool? Use up ALL your material. Finally. Apparently, the S5 feeders current design almost fits the UM3, mechanically. There is the point where the motor needs to turn the other way around. And some part will grind against the back panel. And if you have an UM3 with flow-sensor cables, those cables are a bit on the short side for the right feeder. With a bit of work, it can fit according to our mechanical engineers. But there are currently no plans to put this out as an upgrade kit, as I said before. The general consensus seems to be against upgrade kits.
  5. Ah, you got that wrong. ColorFabb buys their raw materials from these companies. Or in a car analogy, ColorFabb is your local car shop+repair, these companies are the car manufacturers. (Does not go up entirely, but shows the difference in operation scale) These material companies are the type where you ask for a sample of material, and they ask how many metric tons of pellets you want, not a few kg, tons. They make the plastics themselves, not the filament, the knowledge they have is huge. (Most likely the production chain is something like, Oil->Shell->DSM->ColorFabb->Ultimaker3->3D-Print, but I could be slightly wrong here)
  6. Daid

    Ultimaker AMA

    Actually, you have that history the wrong way around. Marketing wanted BuildCore and SupportCore. R&D corrected them, and explained that the cores are not specific to build/support materials but to specific material properties. It wouldn't be strange that some exotic build material needs to be printed in a BB core (I look at you "woodfill")
  7. Daid

    Ultimaker AMA

    Which wouldn't be called AA then, but a different letter. After all, the letters indicate the type of PrintCore.
  8. Sounds to me like a problem area actually. PLA or PVA above 45C is problematic to catastrophic. So you wouldn't want that in a heated build environment...
  9. We found and fixed the cause of that (the cable isn't properly clamped at the head, causing it to wiggle in the connector and lose connection), I think you can get a replacement top of the printhead, or put some thick tape in the clamping to solve that problem.
  10. I always jam the Hex2mm screw driver into the UM3 feeder lever to push it at the office (At home I have an UMO, that always had a quick release) No guarantees on that, but it would have been silly not to have the option in the future after we identified this issue. It's a bit like the new extension port, better be prepared.
  11. The sensor is an encoder wheel touching the filament, so mechanical. Optical simply doesn't work. If you want it to work for all filaments you need 2 different wavelengths of light, and it will get dirty. (If I remember right, black nylon almost completely absorbs IR light for example) As far as I know, the feeder wheel is almost the same, except for it no longer wearing down on carbon filled materials. Those materials will still ruin the normal PrintCores. Oh, but there is a quick-release lever on the feeder now. Instead of the tiny handle that you couldn't hold down for longer then 10 seconds without hurting your fingers.
  12. On the flow sensor, in theory it is simple, put a rotation sensor on the filament, check how much rotation you are getting compared to how much you are asking, differs by X, flow problem and pause. In practice however, you need to get that sensor always touching the filament. Always. Without deforming the filament. This is actually a bit harder then it sounds. Some designs worked fine for a few spools of material, and then suddenly have a 2 cm extrusion of "no touching" due to some mechanical problem. Next, how much filament we ask and how much we are getting is not a 1:1 relationship. Even tough our prints are coming out fine, there is a lot more happening then you initially expect. Filament itself compresses in the bowdentube. There is pressure in the hotend that slowly relaxes, and a retract+unretract does not move equal distance. The back-pressure of the build plate on the first few layers causes under-extrusion. Just to name a few things that can cause false triggers. And those are just the things I know, and I wasn't even on that team!
  13. The UM3 and the S5 run the same firmware, with a different machine configuration. So any firmware improvements on processes like changing material, pausing, etc, tickle down to the UM3. Cura Connect is also on both, and thus any improvements there also tickle down to the UM3. UMO and UM2 can only expect bugfixes in firmware. But continued Cura support as always. (Also, you commented on the UMO noise, most of the noise there comes from the material feeder, the back plate is acting like a noise amplifier, you can get some serious noise reduction by isolating the vibrations from the feeder to the backplate)
  14. The leveling is still using the same sensor, it just measures on more points. Electronics are not 100% the same, but 90%. Software is still the same base as the UM3. Oh, and yes, I forgot the Trinamic stepper drivers. The noise is much much less. The fans are the noise producers now. (Technical detail, TMC2130 is the chip we use) No new motion controller, still the ATMega2560. We had it as an option to upgrade this as well. But we made the choice to keep it close the UM3. (You could see the S5 as an UM3+) I don't know exactly why the Aluminium plate won't be available directly. Some things I overheard could indicate a supply chain issue (the plate needs a proper coating), but don't pin me down on that part, as it could also be profile development. I can only speculate just like the rest of you, as I don't know everything that is happening anymore. As far as I know, the flow sensor won't become available as upgrade kit for the UM3. We had that as option on the table, but I though the latest design no longer fits directly on an UM3 mechanically. And the market that we are in right now isn't super fond on upgrade kits, even if you guys are :-)
  15. It's bigger. 330x245x315mm to be exact. And that volume can be used by BOTH nozzles. No more less volume for dual extrusion prints. It has a flow sensor, that works for jam detection as well. Yes, we spend a shitload of time developing this one. It has been in development even during the UM3 development. As we wanted in the UM3 initially, but we cut it from the release then when it didn't work properly. Solves the 750g spool problem. I think we've gone trough 2 different sensor chip designs, and a whole bunch of mechanical designs before that part was perfect. Then the software when trough a few large iterations as well. This was quite a ride. Touch screen, better late then never. Doors, just improves print quality, especially with high temp materials. But we all already knew this. Expansion port. Next to the spool holder NFC connector there is a mystery connector. Future extension devices can be connected to this. Cannot tell you what we have in the works for this. But hey, the connector is there. Aluminium buildplate. Not all materials where sticking very well to the glass. A proper aluminium build plate works better for some materials. (Available later) Double the theoretical resolution on X/Y by changing the belt pulley sizes. With the heavier construction, this also gave us the plus of having more torque. Internal power supply. No longer the separate power brick. New improved bed, which is stiffer then anything we did before. Grid based leveling. With the large build volume, our 3 point leveling no longer worked properly, as glass and aluminium plates are always a bit warped. (I think this will be backported to the UM3 as well, but don't hold me on that one) It uses the same PrintCores as the UM3, why change something that works great? One thing got removed compared to the UM3, the frame lights are now only white, no longer RGBW. (The RGBW strips are quite expensive in the UM3, and never really used, which I personally think is a shame, but hey, you win some, you lose some)

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