I just got my 0.8mm hot end for the dual extruder. I mainly want to us it for infill and support but also for having a second material/extruder available for faster prints.
So I exchanged the right extruder with the 0.8mm hot end, while the left one still has the original 0.4mm hot end
Yesterday I tried for the first time with bad results. I was sure that I need to change at least the line wide to 0.8 and this was the only change I did so far.
I also read in the snapmaker shop, that Luban is somehow detecting the hot end. Does this mean that Luban does some automatic changes to the profiles? So is there an automatic line wide adaption and there I shouldn’t change to 0.8 manualy?
At least with my current settings even the first layer had some gap between the lines and also the layers where not sticking well (I tried with PLA). The whole part I printed was not usable at all.
Anyone here with 0.8 hot end experience who can give me some hints?
The machine detects your hotend and displays it on the touchscreen and in Luban but does not change anything related to the width.
There should be a own print profile for the greater nozzle in Luban.
Over all there should be change in
-line width (use nozzle size x 1.2)
-layer height (nozzle size x 0.5 is nice enough for me, greater than 0.6mm nozzle I use 0.3mm layer height for outlines)
-print speed (depends on the maximum flow, greater nozzle = higher flow with the same print speed), dual extruder flow is official maximum 20mm3/s
With most Slicers there is a configuration for nozzle size, which should do all the calculations xchrisd mentions for you. Like xchrisd I do not use Luban for Slicing, so I cannot help on automatic detection etc., but I just looked, and at least manually you can change it in Luban. Open the 3D printing workspace and click on the upper right material selection:
I was just tring again with some changed settings.
I took a closer look on the hot end during print and I saw that I have a bigger problem.
I saw that the hot end is dooing some strange z movements while it should do a linear x y printing move. The hot end (not the tool head) is lifted for have a second and then lowered again. So something similar what it is dooing on changing the extruder. This is happening all the time from starting the print…
I will just trie if this also happens with the 0.4 hot end on the right extruder.
Edit: It also happens with the 0.4 hot end. I will ask the support whats wrong with my extruder.
This was definitly the cause of my recent problems. I was aware of that to great force could case printing errors but I was not aware that this could lift the hot end that much without some error.
In my case it was because I switched to use Snapdryer boxes for some filaments. The friction of addional tubes (one was a bit damaged, too) and connections and the force for turning the spool added and then the higher amount of filament needed per time (with the 0.8 hot end)… Yes thats it. Sometimes its so simple you only need to see it.
I installed a .8 mm MicroSwiss mk8 nozzle on the right extruder and it works perfectly. Just change the line width to .8, and under printer settings right extruder, use nozzle size .8
Also I am using Ultimaker Cura 5.9 instead of Luban. Download cura 5.9, then go to Marketplace in cura, (upper right hand corner) and download snapmaker plugin.
