Long, Thin vertical wall is bowing/bowed (not straight)
I am printing an empty box with 1 layer for the wall thickness (similar to vase mode). The box is footprint is 60mm x 190mm.
The vertical walls are not straight. They print straight, but then curve inwards as the print progresses.
(BTW, I wanted to upload the stl and gcode files, but I can't find how to do that in this compose window.)
(In the pictures, the scissors are only there for perspective -- they are not touching the box)
RE: Long, Thin vertical wall is bowing/bowed (not straight)
To upload files here, first zip them.
We will do what we have always done. We will find hope in the impossible.
RE: Long, Thin vertical wall is bowing/bowed (not straight)
Welcome to thermal contraction of plastics 101. Lower your fan speeds, or even turn it off. But even with that on such long and thin runs you might just be out of luck.
RE: Long, Thin vertical wall is bowing/bowed (not straight)
I tried several variations: no fan, lower nozzle temp, lower speed, higher speed. No luck. I finally gave up and am now trying to print two walls with a small amount of 10% infill. The whole idea was to print a "simple" box fast. But FFF may not be the right tech for that. Thanks for the input.
RE: Long, Thin vertical wall is bowing/bowed (not straight)
The bridging on the top wont be helping. As it contracts it will pull those exterior walls in further.
I upgraded the fans on my big printer (an elegoo neptune 3 max) and printed one of the spiral bridging tests, https://www.printables.com/model/848032-bridging-test-customizable , and while it can now actually do a 150mm bridge with the fans on 100% it distorts all the outer walls over time as it pulls them in with the contraction. Ended up having to dial the fans back to 30% for normal printing of PLA and have to be careful with the design for bridging to make sure the anchoring walls are rigid enough.