Yes, I know it is because I am printing a bridge. My apologies for forgetting to mention that I am printing with a support.
I'm not convinced that my issue is related to the support style though? Using alternative support (Grid or Lines) styles makes no difference. However, it does seem that the Slicer is a significant issue? If I compare the behaviour of the slicer between a "Bridge" and a "Pier", I can change the skin pattern. In the attached file, the top row shows two 3D models. On the left is a bridge (or will be when printed face down) and on the right is a pair of piers (excuse the pun!).
The next row down shows the print simulation of the last support layer (in this case, Grid but Lines make no difference) before the skin is printed.
The last row, is showing the print pattern for the first layer of the skin of a bridge (left) and a pier (right).
Why the difference? Why would a bridge with a small gap in it print in a significantly different (un-commanded) way?
Posted : 2nd May 2021 9:11 am