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Type: Posts; User: Mike Francies

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  1. Hi rudschul, I am seeing similar results. The...

    Hi rudschul,

    I am seeing similar results. The more parts there are to print, the more difficult it is to remove the powder. I am pretty sure the reason is that the laser is adding to the surface...
  2. Front right and left are the worst for me....

    Front right and left are the worst for me. Clearly the door is giving the biggest problem and it is probably the easiest to fit a reflector to. I will try some cooking foil the next time I print and...
  3. The problem with just lowering the laser speed is...

    The problem with just lowering the laser speed is that the powder is still not hot enough to stop the warping and in fact just lowering the laser speed actually makes the warping worse as there will...
  4. Hi rudschul, The cooling duct printed without...

    Hi rudschul,

    The cooling duct printed without problem and no curling/warping at all. (see attached photos - quality of photos not too good from my phone) The part has not been post processed other...
  5. That's an interesting project. I had not seen it...

    That's an interesting project. I had not seen it before but it appears to be an awful lot of work! The Sintratec will be good for some of the smaller parts but I think the SkullServoFix is just a bit...
  6. Yes, I do get the white film on the outside of...

    Yes, I do get the white film on the outside of the printer but so far this does not seem to have been a problem for me. I am surprised it gets into your micro switches enough to make them stop...
  7. I think you need to raise the surface temperature...

    I think you need to raise the surface temperature to cure the warping problem. If the surface temperature is very close to the melting temperature, the part has no chance to cool down and therefore...
  8. Hi rudschul, I too had warping issues until I...

    Hi rudschul,

    I too had warping issues until I raised the powder surface temperature to 174.2C and lowered the speed to 550mm/s. What I had noticed was that at startup, the chamber temperature and...
  9. Another thought - last night I printed some...

    Another thought - last night I printed some calibration cubes and when I put the powder into the reservoir I accidentally knocked the machine. What I noticed was that the powder settled down quite a...
  10. Hi Rudschul - I assume the layers are solid and...

    Hi Rudschul - I assume the layers are solid and because the sintering melts the powder into a smaller volume there is not enough powder in the next layer to fill that volume. I think you are right in...
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