Spiralized Test Tubes

This model is part of a set of five different sizes of test tubes: https://than.gs/m/988494

These “Test Tubes” can be used as flower holders, seedling holders or as a toy chemistry set!
See here for video: https://youtu.be/Yl8F2EzHjo4
The models feature a special design feature that allows them to print in spiralized mode to optimize optical clarity. With careful printing and a bit of post-processing these test tubes can hold water!

Download includes five standard test tube sizes: 6ml (75x12mm), 10ml (100x13mm), 19ml (125x16mm), 36ml (150x20mm), and 55ml (150x25mm).

If you were to print a standard test tube shape in spiralized printing, the curvature on the bottom would result in poor layer adhesion, resulting in a weaker print that would not hold water.
If you look closely at these models, you will notice that there are a series of slits in the rim and curved bottom. When sliced in “spiralized mode,” these slits create a toolpath that traces back and forth over itself c