![](https://lemmy.world/pictrs/image/ff1fb4a4-b3ba-4066-8b9e-f1edd5431e5d.webp)
![](https://lemmy.world/pictrs/image/2665e448-91d9-484d-919d-113c9715fc79.png)
Isopropyl alcohol (99% is the good stuff), maybe 2-4 cotton swabs, air dry. Dip swab, rub contacts softly, flip sides of cart, rub, cycle swab, repeat. I had no idea for so many years I was actually damaging the cartridges by blowing into them which just put hot air and moisture on dust. If you have any Switch cartridges or older, and haven’t done a proper cleaning, it’s amazing how shiny and vibrant the contacts will end up looking, along with the cartridge working more stably.
Did he upgrade the head and handle? If so, it’s still your grandpa’s axe. Did you upgrade the axe? It might now be an axe of your own making. If “same” is extended not just to refer to the materials, but refers to fourth-dimensional quantum axe states, the axe stops being your grandpas axe the moment your grandpa isn’t chopping with it, but becomes his axe any time he returns to use it.