Another Generic Spool for low cost uses

Update #3
Been awhile, but I altered my usual design to use bars that follow the curve of the center. This increases surface area to make the join stronger. Made this modification after the delivery company dropped one of these spools and the pegs sheared off. As a nice bonus, less support for the extender piece. :)

If your printer is very accurate (my new ender 3 pro seems more accurate than my CR10-S5) then the pieces may not fit together tightly. Superglue can help in this regard, althoug