|Spool hub diameter
The PLA plastic (polylactic acid) is more fragile than ABS and its machining is difficult. However, it is easy to print thanks to its viscosity.
When cooling, Pla shrinks more than ABS, but it provides good adhesion between layers and will not cause warping problems, even with low temperature platforms ( ≈ 176 °F).
We have found an optimal adhesion to the platform when printing on glass using lacquer that varies its properties
depending on the temperature.