A simple flat base to keep a spool of filament from rolling away. It has 2 forms, one where the dimensions depend on the size of the spool you want to place in it, and one where you specify the dimensions of the base this one does not have sidewalls. The last one I used to turn a drawer of a filing cabinet into a filament spool storing compartment.When using a in-fill of less than 100% CURA (no experience with other slicers) seems to slice this design in such away that the bottom of the spool indent is only 1 layer thick, which gives a less then perfect results. That is why I made the base hollow with just a thin wall that should be printed with 100% in-fill and support, no need to remove the support after printing.The scad file can be used by it self or included in an other scad file so you can can call the spoolbase module with your own parameters. When used on its own set the parameters at the top of the file, the defaults are those off the spool that came with my Ultimaker².- Base_Border (5mm) Extra width of the base around the spool (plus margin).- Base_Height (50mm) Height of the base. Lowering this value can reduze printing time but make it easier for the spool to jump out.- Base_Margin (1mm) extra space around filament spool.- Base_Size ([0mm, 0mm, 0mm]) When set to values >0 this parameter is used as the size of the base instead of it being based in the size of the spool. Also the side walls are removed.- Base_Wall (1.6mm) Width of the side and top walls. Set to a multiple of your nozzle size.- Spool_Diameter (200mm) Diameter of the filament spool that needs to be stored in the spool base.- Spool_Hole (53mm) Diameter of centre hole of the filament spool. Only used for fisualizing a spool in the spool holder in F5 mode.- Spool_Width (55mm) Width of the filament spool that needs to be stored in the spool holder.