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yoveo

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Posts posted by yoveo

  1. hey tommy

    thanks for your reply! You were right, voltage was way too high. I recently changed my electronics cooling to 2x40mm fans. It seems even a VREF of 1.25V caused the drivers to overheat. I have now tuned them back to around 0.85V and printing is flawless, at least for a 30 minute print. I'll now try a longer print and see wether I might have to improve cooling. I also just reused the heatsinks of my old drivers because the aluminium ones I ordered were too high ;).

    I'm now incredibly happy with my setup, direct drive, GT2 and the new drivers make a huge difference to my printing experience and should also decrease maintenance a bit. Less moving parts is always great!

  2. the chips are now tuned to around 1.6V (turning the potentiometer clockwise) and my printer is now actually behaving worse. How can that be? I followed the instructions really closely, MS1, MS2 and MS3 are disconnected, the firmware updated correctly. My first test print is perfect until the moment when I lost lots of steps.

    has anyone of you got a clue how I could solve that? maybe it has happened to someone else, too? asmentioned, the mechanics of the printer are flawless (imho).

  3. I finally installed my silentstepsticks and so far I'm quite happy with it (especially the noise or lack there of!). my x-axis was acting up though during a test print. I have two shifts of around 10mm, once to the right and a little later to the left. What could be the cause of this? I have just installed direct drive and GT2 belts, movement is butter smooth... maybe a faulty chip? any ideas? VREF is set to around 1.3V right now. Can it be too high?

    IMG_5559.thumb.jpg.c50d4f83377b40a0fbe5d347d86dafee.jpg

    IMG_5559.thumb.jpg.c50d4f83377b40a0fbe5d347d86dafee.jpg

  4. I think I should test that. maybe I can find this post. one maybe important detail: I tried to increase temperature to see if that would help. Is it normal to get a max temp error at 275°C?

    edit: I just checked, this is indeed the maximum, so this shouldn't be a problem

  5. hello ultimaker community

    I have an ultimaker original for now almost three years. I have made several upgrades to it and until very recently it has been one incredibly fine and precise machine and I have had a so much fun and productive time with it.

    now suddenly extrusion doesn't work at all. I have had similar issues before, mostly gone since I installed the upgraded nozzle construction. it is incredibly hard to extrude filament, even by hand. first I thought it might be the bowden tube. this happened to me before; brittle filament blocking smooth movement within the bowden tube. so I removed the bowden tube and tried to feed filament directly into the nozzle. it was still almost impossible. so I decided to remove the nozzle and take it apart, just like I sometimes had to do with the original nozzle. but even without the ptfe couple movement was still really hard. I then took the nozzle apart completely and cleaned it. I could see through and couldn't find anything obstructing the filament movement.

    I have now reassembled the nozzle, everything fits tight and is assembled as it should be. so I just tried to feed new filament into the nozzle but still didn't have any luck... I would say I'm quite an experienced ultimaker user and I have to say I kind of am at the end of my possibilities. does anyone know what could be the problem? could there be a problem with temperature? cura displays the correct temperature, but maybe the sensor is broken?

    did I miss anything, what else could hinder the filament from extruding? again, the problem is definitely somewhere around the nozzle...

    thank you so much for any advice!

    best regards

    yves

  6. ok I think I've found the issue. there was indeed a loose contact on my temp sensor thingy above the printhead. the cables are tightly fixed but there seems to be an issue on the board itself. I'll have to narrow that down further.

    another issue though, daid, which I think is software related: sometimes when opening print run, the temperature graph doesn't appear. usually restarting print run or ultimaker helps... is that a known issue?

     

  7. hello there

    I was trying to print something yesterday but unfortunately the print stopped halfway, giving me an error along the lines of 'extruder changed'. what could cause that? it happend twice at the same position in the model... some faulty gcode? I slice it without any special settings in cura...

    thanks for any help!

     

  8. I realised yesterday how much of a difference it makes

    to have your ultimaker greased. while moving my printhead

    by hand I could always feel quite some friction but I always

    thought that's normal, and I was also greasing it at times with

    the lubricant that came with my ultimaker.

    well, yesterday I tried to use wd40 to grease the rods, and guess

    what, suddenly my prints are incredibly smooth...

    maybe that's a very obvious fact to you, but I'm very excited right

    now of what kind of quality the ultimaker is capable of...

  9. my ultimaker is working very nicely in general. I have one mayor issue though.

    I can't seem to get steps per E under control. sometimes it seems fine, other

    times there is simply not enough material extruded (never had the issue of

    blobbing/too much material. now if I use the wizard to configure the setting

    I arrive at around 810 to 820 steps which is nowhere near enough if I then try

    to print. I mostly use around 880 steps which mostly works fine (but sometimes

    doesn't). have you made similiar observations or is something wrong with my setup?

    (note that if I rerun the test and I use the calculated values my ultimaker extrudes

    exactly 100 mm, so the calculation at least is correct).

    oh and by the way, why doesn't cura have a material multiplier while printing?

    that would make it really easy to save a print...

  10. thank you both for your replies. not sure though yet how to handle

    that problem. the gaps are consistent but always only in one direction

    so that sure sounds like backlash. but my belts are super tight...

    long belts and timing belts, so that can't be the issue. does pulley

    slippage have a similar effect on the prints? I'll check this afternoon...

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