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Sungod3k

what is cura doing differently?

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Hi,

I recently got a Bondtec double gear extruder that due to its weights I mounted as bowden and not as flying as before. That brought the topic of pressure and retraction back. Retraction is actually really good at 80mms & 3mm at 90cm bowden length and to minimize the layer change blobs, that are now a bit more pronounced, I wanted to get back to slic3r because it has the aligned seam option. I had abandoned slic3r some time ago for retraction and other issues and had switched first to cura engine in repetier and lastly to standalone cura.

I did a first test with slicer with the same retraction setting but the seam looked absolutely brutal, so I tested curaengine in repetier (right side) and normal cura (left side) with identical settings.

CIMG0970.JPG

So how can the same slicer absolutely wreck the retraction in one platform and deliver decent results in the other? The slice3r results looked similar to the repetier ones btw.

What is cura doing differently that is makes the retraction so smooth? I would really like to replicate those settings in slic3r to get the additional options. I have the feeling that its a timing issue and that curahost somehow doesnt wait long enough during retraction for a blob to form, but I cant really pinpoint the issue precisely.

Cheers

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