Round strap adjuster buckles

remix of https://makerworld.com/en/models/649724-circle-shape-buckle#profileId-576164 but with rounded edges and the shaft recessed. Original size (55mm outer diameter, 45mm shaft length) Smaller size (40mm outer diameter, 32.5mm shaft length). both modelled separately to ensure that the rounding is appropriate to the size. Example shown: Smaller buckle with 22mm wide 2mm thick EVA foamProfile includes support for the shaft. make sure you check the TopZ distance to ensure that it matches your requirements for your fillament