Basic 18650 Case

thingiverse

I downloaded and printed numerous 18650 cases, which led me to design my own case to overcome all the flaws that had been bothering me. Here's what I came up with: This one doesn't require thick walls since it doesn't have a thread that demands them. The chamber is designed with a 19.1mm diameter to accommodate thicker protected cells and account for ABS shrinking, given that I only print in ABS. Its sleek and linear design makes it perfect to fit the battery and drop it into your bag without any unnecessary features like lanyard holes or clips. When printing at 0.15 or 0.2 layers, the roughness will keep the cap tightly sealed and even waterproof, eliminating the need for a thread since friction keeps the cap firmly in place. If you find that the cap fits too tight or doesn't fit at all, just use some sandpaper to smooth it out and roll it a few times around the cap – it'll fit perfectly. However, be careful not to force the cap inside if it's too tight, as this can make it difficult to remove later.