Changes in inner structure visible on surface
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Hi I have an odd problem and am not even sure if there is a name for it. I am printing a frame that consists of a bottom plate and then walls with 5mm thisckness while the inner area is empty. What happens now is that the change from the bottem plate to the walls is clearly visible on the outer surface. It looks like a kink in the wall, like overextrusion for the first view wall layers... onyone seen that before?
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post a picture
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Any Idea?
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what type of filament is this?
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It is PLA
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@TC
that looks really weird.
Shooting from the hip, do you have a badly leveled bed and use M376 taper off set to 5mm?
How does it look from the inner side? Is the bottom tilted the same direction? -
Looks like shrinkage to me. It appears to be a large part the bottom 5mm may be cooling and sucking the outside inwards. The when you print the upper wall it prints much faster and can get around the perimeter before too much cooling takes place.
Just my thoughts anyway.
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@timcurtis67 you might be right. Any idea how I can reduce that shrinking?
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@TC Maybe try higher bed temp. Print faster when printing the base and slow down printing when printing the upper wall. Also If make the upper walls with more infill that will also slow down the print and keep more heat in the print.
With large parts, a heated chamber makes larger parts easier to print.
Can you try PETG? It doesn't shrink as much.
