YoYoFactory 444 Weight Rings

Here is a quick-to-print weight ring mod for the YoYoFactory 444 YoYo. 

This is a really fun mini YoYo but I felt it needed a little extra weight to help bring it into performance mode.  By default the 444 is very light and extremely floaty. While floaty is not necessarily a bad thing - when the YoYo is such a small diameter it can cause the YoYo to lose spin time because there's less mass, especially in the outer rims.   These rings try to solve this issue.

These rings give it an extra 3.7 - 4 grams and it makes the YoYo feel more solid in play and it helps improve the spin time while still keeping the YoYo light and pocketable.  Plus they look cool too! 

After the weight rings are installed the total weight ( *with string* ) comes in at 48 grams. This can of course change based off of the type of filament you use. I used PLA for mine but plan to try PETG in the future to see how much extra weight that will add.  If you use a denser filament, it will add more weight. 

Printing instructions

I suggest printing them at 100% infill at 0.16mm to ensure they are very smooth. You can play around with different layer heights if you want but there's not really any need to go larger as these only take about 15 minutes to print.  

For the top and bottom layer heights I used 4 as it's my default for most prints with a wall thickness of 4 as well.  This doesn't really matter much so whatever you usually print your models will probably work. The main thing is 100% infill. 

Installation 

Installation is super easy. They should press fit perfectly into the YoYo half. Push the rings all the way down until they bottom out on the flat wall inside of the rim. Go around with your thumbs, pressing around on all sides to make sure it's seated flush all the way around. 

I would suggest alternating the seam of each ring opposite of each other.  Doing that will help keep things stable and smooth. (see last picture) If you put the seams in the same spot on both halves it's going to vibe on you. 

Have fun and post what you create!