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  1. #1
    Quote Originally Posted by Geoff View Post
    If it's PLA, you can go all the way down to 180c probably, personally I would try at 200c and see the result. If it sounds like its straining or clicking at all, raise it of course but see how you go at 200c. The cooler it is the less goopy and the less spider webbing also. 200-210c seems to be what I print most of my PLA at these days, with very small variances like 205c.. or 195c...

    On a Big model, I would set my retraction to around 30-40ms and the extraction amount to about 2.0

    On a REALLY big model probably a higher extraction amount like 3.0. The small things you print only require a small retraction usually and you can do it pretty fast, like 40-50ms.
    You guys are totally the best!!! I tried 220 and it did not work, changed to 200 and there is very very little webbing, ill try 180 next
    Its a different part, but this one had the exact same issue and now there are little threads, before it was thick spider webs like on the other part.

    2014-11-15 07.00.13.jpg

    Geoff, I do have a question, since lower seems better, sounds like I should just keep lowering till the webs are gone and stick with that, are there any advantages to higher temp? stronger etc?

    Since there are no odd noises at 200 maybe I can get this last bit of webbing out by changing to 180c

    Currently I am using this and the webs are almost gone.
    extruderTemp: 200
    retractDistance: 2.5
    retractRate: 35

  2. #2
    Super Moderator Geoff's Avatar
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    Quote Originally Posted by gencode View Post
    You guys are totally the best!!! I tried 220 and it did not work, changed to 200 and there is very very little webbing, ill try 180 next
    Its a different part, but this one had the exact same issue and now there are little threads, before it was thick spider webs like on the other part.

    2014-11-15 07.00.13.jpg

    Geoff, I do have a question, since lower seems better, sounds like I should just keep lowering till the webs are gone and stick with that, are there any advantages to higher temp? stronger etc?

    Since there are no odd noises at 200 maybe I can get this last bit of webbing out by changing to 180c

    Currently I am using this and the webs are almost gone.
    extruderTemp: 200
    retractDistance: 2.5
    retractRate: 35

    Glad it's improving. The 180c will all come down to the plastic, some will melt that low, some lower and some wont melt till a good 200c... . You may still get webbing at 180c, but it wont hurt to try at all- the worst you will get is 'click click click'

    As you probably saw the retract is what happens everytime it needs to stop printing and move to another area to start printing. If it does not retract enough and fast enough, it will leave the spider web when it moves.

    So the webs are caused by a few things, speed being one of them. So in the next set of tests, besides the lower heat, try lowering the travel speed (too fast and it will web! )

    So for the next one try perhaps

    190c
    retract distance 3.0
    retract rate 40
    Print speed about 50-60ms
    Travel speed try 90ms.

    This might be a bit slower, but better to find out whats causing it , and then improve that thing rather than everything.
    Hex3D - 3D Printing and Design http://www.hex3d.com

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