Servo winch drum for internal spool

I have a couple of these working, I used pla might need do a little drilling in center and for line anchor, but the set screw hole is perfect for 3mm grub screw and then I ground a flat spot in the drive screw to hold drum tightly and screw in set screw before hand so it makes some threads and don't overtighten. and for the anchor I went through anchor hole and looped and tied knot as seen in pictures.