Back Ground

I found the “Spindle Wool” by efrost on Thingiverse. It was a good model both the size of the spindle and the STL file provided were problematic. So I designed this Spindle from the ground up in Fusion 360. I made this one more to scale (220 mm tall. 65 mm Diameter at the largest part) for a drop spindle, added a Hook at the top of the spindle for convenience and saved the STL file separately for ease of printing parts with different print settings (which is pretty important for this model to work properly).

Print Settings

Infill

Top: 5-15%

Screws: 70%

Mid: 5%-25% Depending on the desired weight for the spindle (if you need more weight it might give the spindle more stability by just increasing the wall count)

Bottom: 5-15%

Walls

Top: 4

Screws: 4-5

Mid: 4-6 Depending on the desired weight for the spindle

Bottom: 3-4

Supports

The only support needed is for the hook on the top 

Notes

I've included an image to show the best orientation for the parts to be printed. 

Assembly Directions

1. Glue the two halves of the screws together (Super glue works great)
2. Insert the screw into the Top
3. Screw on the Middle
4. Screw on the Bottom

Notes

you can glue The Top, Middle, and Bottom together with super glue if you want. If you use something less permanent like a glue stick you can disassemble it later and print a new Middle to change the weight of the Spindle instead of having to print a whole new one for lighter or heavier yarn.