I just printed a few parts and noticed that they seem to be relatively close to the correct design dimensions at the bottom and top but the middle shrinks quite a lot. The OD of the cylinder should be 76.2mm but the print varies from 75.6mm (bottom) to 74.3mm (middle). Any recommendations? [IMG_80…

Plastic shrinks as it cools, you may need to take this into account in your designs if tolerances across large dimensions are critical. [image] 3D Printing Filament Shrinkage Compensation | 3D Knowledge 3D Printing Shrinkage Compensation When it comes down to it, there are three types…

Thanks, Brent. I have seen similar articles to what you linked. I recognize that shrinking is to be expected (this does fall within the 2-2.5% range) but what throws me off is the inconsistency from bottom to mid to top. I would think that the bottom might have the flaring since it is attached to th…

Likely temperature, cooling, or extrusion related.

@brent113 e-step changes alone made a significant difference. Last print OD came out ~76mm. Thank you! @WilliamBosacker Thanks for the input! I will try increasing the print speed. Wall thickness is set to 1.2mm. This is a spacer to keep a 1.5" PVC pipe centered inside a 3" PVC pipe. Outer wall …

Generally speaking, and expanding on @WilliamBosacker ’s point, many such parts will have huge strength increases when printed solid. You’ll find though that the sparse infill patterns give a lot of leeway for under or overextrusion as there are gaps for the extra filament to flow into. With solid pa…

Middle of prints shrinking

Snapmaker 2.0 (3-in-1)

Air0n June 1, 2021, 7:02pm 5

Found the post below that covers e-step calibration. Mine was indeed off by quite a bit. I will try another print and see what the difference is before moving to flow control since wall thickness is within the tolerance you suggested. Also, linking your post that discusses your calibration steps for reference.

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Middle of prints shrinking

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