Hello again!
I have run a print last night. PLA and BVOH.
The first trials where a little problematic due to the BVOH and the PLA not really sticking together too well.
So I increased temperature quite a bit to PLA@220°C, BVOH @210°C.
Which - after all - was a bit too hot as we can see later.
Layer height was 0,1mm.
Wipewall enabled.
The result is not really "usable" (after all it's useless anyway since it is a Pokemon;-).
But I thought this might be an interesting test object due to some small details.
Here are some pictures with some issues to talk about;-)
Right after the print one can already see some issues here:
blobs (as I said, temp might be too high...) but also sometimes not sticking material -
seems to me as if the temperature of the material was not consistent during print?
(btw., bed was at 60°C, printer closed, room as well).
Why these strange strings? Why such an inconsistent printing?
As you can see here, somewhen in the middle of the print a serious offset of approx. 5mm happened on the Y-axis.
This is straight on the Y-axis so it certainly does not seem to be caused by the nozzles hitting the object -
in that case it would never have been so straigth, I assume?
I wonder whether this is caused by an electrical or a mechanical problem?
If so, what could be the root cause?
Regarding the BVOH:
Dissolving it in water works surprisingly quick in the beginning.
From the "packaged" object (first picture) to the "unpackaged" object it took roughly 30 minutes.
I did support the process by placing the object into an ultrasonic cleaner. Water @ approx. 38°C,
20 minutes runtime. The remaining material then could be washed off under the water tap.
Some material remains which requires a bit more efforts, e.g. to be brushed off.
Or just leave it in water for some hours, I guess.
Currently I have a second test print ongoing.
This time I manually changed the temp. to PLA@210°C, BVOH @200°C after starting the print at the higher temperatures as m.a. .
The idea is to get a good foundation (due to better sticking material) and then have more precision for the rest.
Let's see.
I am also very curious to see whether this strange offset happens again.
...there's nothing like the smell of fresh ABS in the morning...