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Enable bridge setting on entire unsupported cantilever beam wall
I believe that is because the end isn't considered part of the bridge. It is considered part of an abutment that on that particular model does not exist. A "bridge" exists between two abutments and you only have one.
I don't believe that shelf would print at any rate as there is nothing for the plastic of those movements to stick to and so the extrusions would simply loop back around to the main body of the model and hang vertically as they solidify. Cantilevers happen all the time and always require support. An alternative would be to add a chamfer to the model on the underside of the feature so it would not require support (or bridging).
All that being said, when you have situations that aren't covered by the "normal" software settings then hand coding some things can help. You can find that area in the gcode and kick the fan up to 100% with an M106 S255 and lower the feed rate with M220 S20 before the movement and M106 S0 and M220 S100 after the movement.
I still think it's going to sag though as no matter what you do with feed and fan - it's still air printing.
Edited by GregValiant
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GregValiant 1,488
I believe that is because the end isn't considered part of the bridge. It is considered part of an abutment that on that particular model does not exist. A "bridge" exists between two abutments and you only have one.
I don't believe that shelf would print at any rate as there is nothing for the plastic of those movements to stick to and so the extrusions would simply loop back around to the main body of the model and hang vertically as they solidify. Cantilevers happen all the time and always require support. An alternative would be to add a chamfer to the model on the underside of the feature so it would not require support (or bridging).
All that being said, when you have situations that aren't covered by the "normal" software settings then hand coding some things can help. You can find that area in the gcode and kick the fan up to 100% with an M106 S255 and lower the feed rate with M220 S20 before the movement and M106 S0 and M220 S100 after the movement.
I still think it's going to sag though as no matter what you do with feed and fan - it's still air printing.
Edited by GregValiantLink to post
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