Request 1.2.7-dev: When raft layers >0, allow first layer height to be equal to raft-extruder-nozzle-diameter #2701

jonaskuehling opened this Issue Mar 2, 2015 · 3 comments


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Hi Alex,

thanks a bunch for fixing #2662! Now that we have almost full control over the very first raft/support layer I'd like to suggest one further minor detail:

In case "raft layers" > 0 it would be awesome to be able to set the first layer height equal to the support material extruder nozzle diameter at maximum. So, when printing with Ø0.35mm nozzle on the first extruder (model material) and e.g. Ø0.5mm nozzle on the second extruder (support material), one could use up to 0.5mm height for the first layer and thus achieve further redundancy in regard to bed leveling/evenness.

Currently first layer height only seems to be allowed up to the size of the smallest nozzle installed on one of the used extruders - which is of course mandatory when using both (or more) extruders in the first layer already. But I think for raft>0 Slic3r should only check the nozzle size of the extruder, that is selected for "Support material/raft/skirt", since in this case there will always be only this single extruder printing the first layer directly on the print bed.

What do you think?

alexrj commented Mar 2, 2015

That makes sense, I'll check how much work is needed for that. :)

@alexrj alexrj added a commit that referenced this issue Mar 6, 2015
@alexrj When using raft, validate first layer height against support material…
… extruder only instead of taking other extruders into account, thus potentially allowing larger nozzles to be used for it. #2701
alexrj commented Mar 6, 2015

Done! :)

@alexrj alexrj closed this Mar 6, 2015
@alexrj alexrj added this to the 1.2.7 milestone Mar 6, 2015
@alexrj alexrj added the Done label Mar 6, 2015

Works like a charm! ;-)

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