Weighted Spinny Pen Fidget Toy

Weighted ballpoint pen for spinning tricks! It uses a regular BIC ballpoint pen on the inside.

0.2mm layer height, 100% infill, 20mm brim, PLA or PETG. These have to be printed straight up, which means they have to be printed as a pack of four for stability. You also need to have a brim of about 20mm or the print will likely knock over or you'll have sliding layers near the top of the model.

Assembly instructions / BOM:

You'll need 8 M4 hex nuts for one pen, or 32 M4 hex nuts for 4 pens. These are the ones that I bought: https://www.amazon.com/gp/product/B0BLBLM2BQ/

(Hex Nuts, M4-0.7 Stainless Steel 304 (18-8) Hex Nut, 100pcs)

Simply feed in the hex nuts first on each side, four on each side, then assemble the rest of the pen.

Model is printed without supports because there are built in supports from the design file. There are two levels of bridges between the pens that need to be cut off after printing, and there is a small cylinder at the base of the model that is easily removed by carefully using an exacto knife or other tool to grab it and pull it out.

The pen tip and base stopper should also be printed with a brim for bed adhesion.

Oh, and everything should be printed at 20mm/s. Any faster and you risk the print knocking over.

Also, if you print finer than 0.2mm layer height, like say 0.16 or 0.12, the tip and base parts likely will not fit in perfectly so you'll need either glue to keep them in place, or a soldering iron to weld them in place, or have to experiment with increasing the size of them very slightly so that they fit. Like maybe 1%.

If you're having trouble check out my assembly video: https://youtu.be/L9abdPDO30c