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Everything posted by densohax

  1. Ok so my problem is that the vespel spacer didn't sit on the hot end tip and it went up and so it plugged between the vespel and hot tip.. Really a simple issue after all, but I broke the vespel. So I'm back with the original teflon spacer.
  2. Yeah I saw this video, I'll give it a try.. Actually, I had to change the PT100 on my heatbed recently, maybe there's actually a problem with the PCB connections, because the PT100 was reporting temps correctly but sometimes after the print there was the temp sensor error, although the bed was correctly heated..
  3. Yes I did. It feels like there is not enough heat in the plastic. There is no smell now and the plastic is not very fluid... My heat sensor might be bad, although it boils water at 100 celsius.. I have to find a better way to test it...
  4. So it's not going very nicely... I have under extrusion problems, the feeder motor started skipping and I am at 250 celsius with ABS using the vespel spacer + teflon spacer. It looks like I might have to drill the inside diameter a little, or maybe the head is not heating as it should, I am a bit tired of this issue, I hope Ultimaker will find a good solution.
  5. Just wanted to chime in! So my setup finally failed (burnt plastic formed between the hotend and the PTFE coupler) .. So I am now using the vespel spacer between the teflon part and hotend..
  6. I have the same issue. It would be nice to fix this!
  7. Sounds good I'm still on my PTFE red tubing coming from my Thing-O-Matic with no issues here...
  8. I am about to test my vespel as well, my setup is currently failing in retraction.
  9. Why, we all know what happens with the spacer. You should replace it with better material.
  10. Is PC as stiff as PLA or flexible like ABS ?
  11. On my side, I didn't test the vespel yet, my setup is not failing, even in an enclosure.. I'm planning heavy printing soon, so we'll see if I need it! If I don't need it, I will be happy to send the vespel to someone who needs it. Here's something I'm currently designing and will be printed soon (home made bearings, electroformed plastic and hopefully diy hydraulics (I'm trying to polish an ABS copper-electroplated liner that will fit in my cylinders) ) Here's my enclosure setup btw, I will need ventilation for the bottom PCB. (I still don't understand why the red tubing of my MK6 is not failing)
  12. A while ago I made this little contraption to clean the air in my room.. It works well enough, the air feels fresher.. It's an ozone purifier I made using a high voltage power supply I got from a neon transformer for PC: http://www.newegg.com/Product/Product.aspx?Item=N82E16800888036 I simply made a little board with an ATTINY microcontroller that switches on/off a relay to activate periodically the electrostatic plate.. Works pretty well, but I don't use it because frankly, I don't like electrostatics around my equipment
  13. Oh I misread that post! Ok I'll send you a pm as soon as I get home, thanks a lot!!
  14. Unfortunately, I live in canada, but if you accept that I pay the shipping, I'd be happy to have #1!
  15. I just read about vespel, sounds like a good material! Do you have a good place where we can source this from Canada or US ?
  16. I want to put the whole unit (ultimaker 2) in a metal enclosure, so I can filter out the smell of ABS.. I was wondering if I should worry about the mainboard being too hot? Should I add a fan to the mainboard that would blow some fresh air, or I shall be alright? I figure the ambiant temperature in a big metal box is going to be around 40 celsius max, unless I am mistaken..
  17. That's an interesting product! Thanks a lot for the heads up!
  18. I have some ceramic rods, just didn't spend the time to play with my new diamond tooling I'll let you know if/when my new setup fails.. In the meantime, I'm still very happy using the red ptfe that came with the makerbot thing-o-matic. It prints wonderfully!
  19. I went back to the original fan, it was taking a LOT longer to heat the head and the temperature was oscillating quite a lot.. It would need some calibration to keep that fan, or an enclosed box.
  20. Again, that's EXACTLY what happened to my spacer! The ridge inside, at the same exact place!
  21. Just installed one tornado fan! WOW SO LOUD!! I can't live with that! XD However, they are pushing quite a lot for their size! Did you silenced them a little? My ears are bleeding as I type this! Looks like the rods are resonating with the fan, amplifying the noise..
  22. Yes friction is one problem. I did try ninja flex with my redntubing and it did not work.. So I drilled the red ptfe as Cleven suggested and it helped a lot!! I will try to put a ceramic sleeve between the tubing and the hot end, I am unsure if it is a good idea yet, but my modification seems to work right now, we'll see for how long. Also, for the record, I had 110 hours on my printer before failure of the teflon part. and it did exactly as you explained!
  23. I wasn't sure if this issue was addressed, I know from my searches on this forums that people are often adding "tornado" concentrators on the fans. But the off-center issue wasn't mentionned (I think). I happen to print in abs and when doing cylindrical parts with 100% infill, it's clear that the off-center fan at the right is not pushing enough air to the tip, because my parts are still extremly soft to the right and this creates some plastic burns when the plastic touches the hot tip for a long time (the warping of molten plastic is going toward the tip). Is there an easy mod/relocating of the fans that could prevent this off-center air flow?
  24. Thanks for the heads-up! I was reading your thread actually and was wondering how much you could draw from the power on the fan.. Looks like the ADC is quite sensitive to noise, maybe we need some shielding as well in the wiring? The side fans are PWM driven? If so, maybe they are the cause of the misreading of the ADC? I had the fans to 100% with PLA but with ABS I am between 20 and 50% .. Maybe this could be a problem... Btw, I'm quite sure my temperature is off as well, I will certainly try to modify the firmware eventually to get more accuracy out of the temperature sensor.
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