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First Layer not printing on a diagonal
Posted: Sat Feb 21, 2026 2:10 pm
by Beevo
I have been fighting this one for a few days. The first layer prints along the Y axis, not diagonally like it used to. Been using S3D for 4-5 years now and at this point I can't see what setting controls this.
I am on the current version.
Bill
Re: First Layer not printing on a diagonal
Posted: Mon Feb 23, 2026 9:44 am
by S3D-Taylor
Sounds like you've accidentally set External Pattern Rotation to 45 deg, change it back to 0 should fix this. It is under the Infill tab of process settings.
Re: First Layer not printing on a diagonal
Posted: Mon Feb 23, 2026 10:05 am
by Beevo
No, it is set to 0
FWIW, I printed a different part last night and the angle of the infill was the normal diagonal pattern.
Bill
Re: First Layer not printing on a diagonal
Posted: Mon Feb 23, 2026 2:57 pm
by S3D-Taylor
It could be that the External Infill Pattern is set to Aligned instead of the usual Rectilinear. If that doesn't solve the issue, maybe attach the factory file here so we can take a look at it.
Re: First Layer not printing on a diagonal
Posted: Mon Feb 23, 2026 4:44 pm
by Beevo
Set as rectilinear.
I am POSITIVE at this point the issue is within the .STL file generated by Fusion360.
I went in and created a new design from scratch (there were some changes I wanted to make, so no biggee) and then exported it and S3D created a GCode that now has the 1st layer filled diagonally.
Bill