Parameters for .8 mm Nozzles

Shawn Fitzpatrick

September 14, 2016 18:27

None

I've been doing some testing with PLA and .8 mm nozzles to see how the quality compares, as it seems like we could have some pretty significant speed increases on models that don't require high precision... which it seems logical that many of the larger models OGB is capable of would benefit from.

My first test was at the 3600 default print speed

3200 mm/minute was much better

Still, I was having significant issues with over extruding thin areas

Additional changes that seemed to help:

Reducing default print speed a bit farther to 2800
Bumped temp up 5ºC to 221ºC
Changed retraction to 1.2 mmChanged Extrusion Multiplier to 0.90

Anyone else experimenting with this care to share their thoughts and settings?

Thanks,

Shawn

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Darrel Barnette September 14, 2016 18:56

When I print with a .6mm dia nozzle, I typically use a .5mm layer height. It makes the part stronger, and it makes the part faster to print. I generally run in the speed range of 30-40mm/sec. It gets hard to move that much plastic through the nozzle at higher feed rate settings, in my experience.

I also use a large retraction with petg (about 5mm) in order to reduce oozing.

One note: I actually specify a .4999 layer height in simplify. Sometimes when I specify .5mm layer height, it leaves out part of a layer on the preview screen. I've never figured out why this happens.

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Matthew Fiedler December 01, 2016 17:21

Simplify3D profile for the re:inspired volcano style hot end using 0.8mm nozzle:

http://wiki.re3d.org/index.php?title=Installing_and_using_software_with_Gigabot#Gigabot_configuration

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