Spiral Vase Wall Thickness Calibration Octagon
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A 30x50 vase mode octagon to dial in wall thicknesses. Particularly useful with preFlight's Athena perimeters.
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Spiral Vase Wall Thickness Calibration Octagon
This is a simple 30 mm wide × 50 mm tall octagonal test model designed to be printed in Spiral Vase Mode. It provides eight flat surfaces that can be measured with calipers to help calibrate your filament’s extrusion multiplier/flow ratio for accurate perimeter wall thickness.
This is particularly useful when using preFlight’s Athena Perimeter Generator, which relies on consistent, predictable wall thicknesses to improve dimensional accuracy.
Method
Check and record the expected wall thickness shown by your slicer.
Enable Spiral Vase Mode, slice the model, and print it.
Using calipers, measure the wall thickness at the center of each of the eight sides. Be careful not to squeeze or deform the wall while measuring.
Average the eight measurements and compare the result with the wall thickness reported by your slicer.
Adjust the extrusion multiplier / flow ratio to compensate, then print the test again.
Repeat as necessary until the measured wall thickness closely matches the expected value.
Why I Made This
With both Anycubic PLA and Prusament ASA, my average measured wall thickness was essentially identical to my target of 0.45 mm.
My SUNLU PA6-CF, however, initially produced an average wall thickness of approximately 0.56 mm. After several tests, I reduced the extrusion multiplier to 0.80, which brought the wall thickness much closer to the target—and suddenly my PA6-CF printed parts started fitting together correctly!
This isn't meant to replace other filament calibration methods, but it provides a quick and easy way to check whether your actual printed perimeter thickness matches what your slicer thinks it is producing.