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tmcolby

Prime blob problem

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My UM3 started doing this weird issue after it prime blobs extruder 1. I've been using the same settings profile, and now for some reason it leaves a long streak of material all the way across the bed. I am printing on a raft. Any ideas? 

 

After the blob, it does a very slow move to back corner extrudding the whole way.

IMG_20180913_190720.jpg

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ok, after a bunch of testing.. the problem manifests when i use "max comb distance with no retract"

 

my stock settings profile works as it used to.

if i plug in a value of 10mm into "max comb distance with no retract" the problem shows up.

 

whats up with that?  does anyone else use that feature with success.  i swore i had it working before and i really liked it because i like to print my parts on a raft of breakaway material to get a consistent surface texture.  this feature would leave the raft pristine so i dont get any strands in my surface layer of my print.

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