I was using BL support material for PLA when I noticed that the selection of support interface affects the rest of the part. After conducting several tests, I discovered that this problem is related to the K value used for the support material and its position in the AMS. It appears that the software disregards the K value for individual materials and instead employs a single value (the one associated with the first material used) for the entire print. Is this a known bug? To solve this, I can also set the support interface material to have the K value of the part I want to print.
First part (left) was printed with support material in slot 2 with a K=0.095 and pla in slot 4 with K=0.03. Second part (right) was printed with the spools in the same slots but the support material used a K=0.03
Hi David. I cannot confirm for PLA support; it is still the only untouched material. Last week, I did some multicolour prints using the AMS stored k value, and the output was excellent.
I verified, and my K values are not so discrepant as yours so that the issue could happen; however, during the first try, I got a faulty connection between the AMS and the printer, which resulted in resetting two filament’s K values to zero.
I tried to continue, but the lousy quality was noticeable and required a stop. So it seems to work.
I don’t do many multicolour prints, so I cannot test, but I do many “prints by object” with different materials. And for that, I am sure that the k values are being used correctly.
It’s good to know objects are calculated separately