Ninjaflex - anyone? May 21, 2014 05:03AM |
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Re: Ninjaflex - anyone? May 21, 2014 05:40AM |
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Re: Ninjaflex - anyone? May 21, 2014 05:49AM |
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Re: Ninjaflex - anyone? May 28, 2014 10:59AM |
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Re: Ninjaflex - anyone? May 28, 2014 11:39AM |
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Re: Ninjaflex - anyone? February 09, 2015 02:11AM |
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Re: Ninjaflex - anyone? February 09, 2015 04:36AM |
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Re: Ninjaflex - anyone? February 10, 2015 04:51AM |
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Quote
Avoid large print areas with no retraction. If necessary add a feature to the design that will cause a retraction, or modify the g-code.
G92 E0 G1 E-10.00000 F7500.00000 G92 E0 G1 Z0.200 F7800.000 G1 X-42.417 Y0.000 F7800.000 G1 E10.10000 F7500.00000 G1 X-42.417 Y-60.002 E10.81857 F540.000 G1 X-42.398 Y-60.501 E10.82455 G1 X-42.297 Y-61.781 E10.83992 G1 X-42.141 Y-62.766 E10.85187So it's not possible to insert a
G1 E-10.00000 F7500.00000 G1 E10.10000 F7500.00000whenever I wanted to. At least I have to switch the mode to relative and back to absolute:
G91 G1 E-10.00000 F7500.00000 G1 E10.10000 F7500.00000 G90Will that work? Does the value of E stay where it was?
Re: Ninjaflex - anyone? February 10, 2015 07:55AM |
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Re: Ninjaflex - anyone? February 10, 2015 10:47AM |
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Re: Ninjaflex - anyone? February 11, 2015 08:24AM |
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Re: Ninjaflex - anyone? February 12, 2015 04:02AM |
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Re: Ninjaflex - anyone? February 12, 2015 05:37AM |
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Re: Ninjaflex - anyone? February 12, 2015 10:10AM |
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More details here.Quote
Daniel Bull
One of the pieces of advice I saw quite often was "don't use retraction with NinjaFlex" accompanied by photos of really stringy prints from people that didn't use retraction. I can only think this is aimed at people with Bowden style extruders or something like that(?) because I cranked up the retraction both in distance and speed on my Mendel and got far better results. One of the issues is the squidginess of the NinjaFlex accompanied by the slightly higher heat means it tends to dribble. At the moment I'm running a 3mm retract (prime/suck) at 40mm/s and as you can see from the photo its achieving quite good results. I need to experiment and find out what the sensible limits on my Mendel are as faster and further seems to be the way to go.
More Details here.Quote
Sanjay Mortimer
Retraction should be aggressive and quite long. I usually use 0.5mm for PLA/ABS, for all the flex prints shown I used 1.5mm.
More details here.Quote
Robert Wozniak
- Use Retraction: This seems to be the main factor in getting good prints.
- I think that the difficulty with printing with flexible filaments is that they will kink up in the feed path between the hobbed gear and the hotend if you try to extrude too fast which allows the heat chamber to build, which caused the compression in the filament to increase.
- Once it starts to kink, unless you retract enough to undo the kink, you're done.
- The Coefficient of friction of the flexible Urethane filament is so high, that there's no chance to push it through.
- The filament just continues to kink more and more until the total volume is filled.
- I've retracted kinked filament, and observed 10 or 12 kinks in only 10 or 12 mm
- In Slic3r (Printer Settings / Extruder 1 / Retraction) I use the following settings: Retraction Length to 10mm, Speed to 125mm/sec, Extra Length on restart to 0.1mm, Minimum Travel after Retraction to 1mm
Re: Ninjaflex - anyone? February 12, 2015 12:58PM |
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Re: Ninjaflex - anyone? February 12, 2015 04:00PM |
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Quote
Robert Wozniak
- Avoid large print areas with no retraction. If necessary add a feature to the design that will cause a retraction, or modify the g-code.
Re: Ninjaflex - anyone? February 12, 2015 04:41PM |
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Re: Ninjaflex - anyone? February 13, 2015 01:22AM |
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Quote
Length to 10mm, Speed to 125mm/sec, Extra Length on restart to 0.1mm, Minimum Travel after Retraction to 1mm
Re: Ninjaflex - anyone? February 14, 2015 05:05AM |
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Re: Ninjaflex - anyone? February 14, 2015 07:44AM |
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Re: Ninjaflex - anyone? February 14, 2015 05:02PM |
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Quote
nophead
Looks like you have added retracts in the overhangs, which cause the filament to fail to bridge.