Inside to Outside Override

[DarkOwl2]

Is your feature request related to a problem?

Inside to outside wall ordering is best for unsupported overhangs, but outside to inside is best for the first layer.

With inside to outside, the first line drawn is separated from the brim, and if it contains sharp corners it can easily pull away. By printing outside to inside, the brim anchors the first line, and then subsequent lines anchor each other.

To improve success rates, I am currently slicing with both settings and then merging the gcode files manually, so that the first layer is outside to inside, then subsequent layers inside to outside.

Describe the solution you'd like

Provide a first layer override option for the inside to outside wall setting.

Describe alternatives you've considered

N/A

Affected users and/or printers

This should improve printability for any situation where bed adhesion is marginal, eg unheated beds or difficult filaments.

Additional information & file uploads

No response

[GregValiant]

This is an alternative to your workaround.

• Bring in a Support Blocker.
• Scale it to about the size of your build plate in the X and Y and make it "Initial Layer Height" thick.
• Locate it at 0,0,0 on your build plate.
• In the Per Model settings configure it to "Modify settings for overlaps" and as a "Cutting Mesh".
• Use "Select Settings" and then "Wall Ordering" and set it to "Outside to Inside".

You can save that as a project file and it will be ready for you to add a model.

outside_in.mp4