20mm Projectile (Fits 20mm Brass)

thingiverse

I came up with a 20mm projectile design that works great when combined with real brass for plaques. Printing it with PLA or PETG yields excellent results. To get the best prints, I recommend using infill with PLA and no infill with three walls in PETG. After testing the original base on different brass pieces, I realized it fit a bit too tightly. The neck of one particular piece was slightly stretched out compared to others. To resolve this issue, I reduced the base diameter by 0.2mm, resulting in a perfect fit for all brass projectiles. Furthermore, this adjustment eliminated the need for supports altogether.