Logitech G403 G603 G703 mouse wheel scroll fix

Some Logitech mice are known to develop scroll wheel issues over time. The pin/rod that rotates the scrolling mechanism inside gets worn out after a while and starts skipping. I used to buy replacement wheels online but they also tend to wear out eventually.

After having multiple replacements fail, I started Googling 3d printable replacement wheels and tried a few. Most of them worked, but they didn't look or feel like the original one in my hand.

In the end I came up with a simple solution to reuse the original scroll wheel by just replacing its problematic "pin" part. I'm very happy with the results, see the pictures for details and instructions.

I usually leave print settings as default in the slicer, but since these are tiny parts that needed to be precise and uniform I made some changes and used a small layer height,

• Layer height: 0.05mm

• First layer height: 0.05mm

• Detect thin walls (not sure if it made any difference)

• Slow print speed (20 to 30 mm/s)

I've not added any skirt or brim.

It's all printed with Esun PLA+ on a Prusa MK3S+