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Retraction question + another one

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Hi!

Am I posting in the wrong section? If so, I'm sorry.

I've got two questions. First, is it possible to make the retraction settings the same as when it moves from printing the first "fake(?)" perimiter to print the real deal because I use pretty slow travel speed(otherwise initial layer gets sloppy) and retraction isn't working. I want the same that it does between the extra layer and starting the real one.

2nd question, is it possible in Cura change what the printer prints first? Like instead from it printing that stuff first I want it to take this route instead?

Thanks in advance :)

 

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Extra layer? You mean the skirt? I think you need to post a picture maybe. Click "gallery" in the top left corner of this page, then click blue "upload" button. After uploading start a new post and click "my media" next to smile icon.

 

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Guest

Yes, retraction between the skirt and first layer works perfectly. I want the same setting for my standard retraction during print.

Regarding the second question, will you be able to somehow tweek in what order it prints in the future?

Thanks in advance,

Axel :)

 

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I want the same setting for my standard retraction during print.

Did you check "enable retraction"? there are 6 retraction related settings:

1) Make sure retraction is checked on basic/quality

2) In expert settings set minimum travel to 0mm or at least something small like 1mm.

3) In expert settings set "minimal extrusion..." to 0 or something well under .1mm. There is a 160X factor on this for .1mm layers so if you extrude .02mm filament you will get 3.2mm of straight line extruding. So the default is to not retract if you print for less than 3.2mm of linear printing (for .1mm layers).

4) In expert settings you can set "combing" on or off - it shouldn't make a huge difference for this part. Lately turning this "off" seems better in the current version of Cura but in the next version it might be best to turn it back on.

5,6) For the UM Original, you can also control the amount and speed of retraction. I recommend 40mm/sec (which works well for old and new Marlin firmware) and if you printed this part then 4.5mm retraction should be about perfect:

http://www.thingiverse.com/thing:46157

Without the above part you need at least 5.5mm retraction distance.

 

5,6) On UM2: On the printer, you can control retraction there also Leave the retraction speed alone but change the retraction amount from 4.5mm to 5.5mm if the bowden moves up and down at the head (try pulling it a bit).

 

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