Using dual extrusion without the special funktions of S3D is strange for me, but if it is running - just do it. And with this you can reach the best results ever. HIPS is lemonene-soluble and you can wash it away without any traces. You don't need any dense or separation layers. It has 2 steps to be supported and the dense is only to realize in upper section and not in the middle.īut where is the problem about this generally? You are using HIPS.
I'm not sure about the dense-support, but it may be possible the difficults are caused by the model. Your part is very small an I fear the most difficults are caused by this. And that will be added to the next retract and so on. If the running way of the nozzle is very short it may happens, the next retract is going on before the distance of the first ExtraRestart has ended. If you retract 1 mm and you have a ExtraRestart value of -0,75 mm the extrusion begins at this point and the whole way the nozzle is going nothing is coming out just to the point where the extrusion has filled up this blank volume.
And this abundant material is coming out first when the new extrusion begins and it builds the infamous blobbs. To have a soft new beginning of extrusion it is recommended to not place the filament in front but a little bit less than the mouth of the nozzle, because there is always enough material inside that cannot be retracted.
In the most cases it is recommended to lift the nozzle while retracting, but zero lift may also be ok. With the retract you pull back the filament to eliminate the pressure forward (tenseness ?) and to stop the extrusion without rests of materials coming out of the nozzle.įor a direct-extruder ist a value of 1 up to 2 mm ok, so I read oftenįor a bowden-extruder you need round about 5 mm, mine needs 5,5 mm, that is depending of the longuiness of the bowden.
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