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jleichne

Minimizing initial stringy-ness

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Hey yall'

I've only had this printing for like two days but already I have been impressed by the ability of the built-in retract mechanism in Cura (which I have barely played with but was able to print the vertical DNA model rather accurately).

Here's my question: When I warm up my head, it always starts pushing out tiny strands of filament. When it begins printing, I always need to make sure that the filament is a certain length so that it does not mess up the first layer and hence the whole print.

Do you all just do what I do, and pull it off real quick right as it starts printing?

Jared

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I've been tuning on this the past few days. I use a variety of methods to help off-set this. I do try to keep a small bit of card stock in my hand (like a business card) so that I can catch the ooze right before the job begins. I also have taken to using two skirt runs around each part with a slightly larger distance from the model. That usually is enough to get any globs to stick around the outside. Lastly, I've seen that lowering the temperature helps a lot too. I have one job I run at 185 degrees that doesn't ooze at all, but sometimes has adherence issues. Generally, temperatures between 190 and 200 degrees help to reduce the ooze. But, if you are printing larger and faster, you'll need those higher temps. In my case, I was printing objects that are about 5 mm in size at very slow speeds, so oozing and temperature control become more critical on the small parts.

-John

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