# 13 byRonS on Sept. 28, 2021, 10:34 a.m.
Member since 2021-09-23
Originally this category contained two sub-categories Rotating and Non-Rotating with subcategories for the various torus, cylinders etc below the Rotating sub-category. The Rotating Category was removed and Non-Rotating was placed as a "basic form".
# 23219 byRonS on Aug. 5, 2023, 9:06 a.m.
Member since 2021-09-23
Review the contents of paper 178 and add entries for the more significant of the designs.