You shouldn't be applying pressure with your finger tips. I've sanded thousands of cars and never hurt my finger tips.
I keep a box of finger condoms to protect my fingers when I get a scraped knuckle or cut. they will stay on when a band aid will not and the keep it clean and dry.
Remember use the palm and keep your hand flat.
If you don't make mistakes. your not doing anything.
69 ss rs full custom camaro 98 ISCA grandchampion
69 ss rs bb camaro wifes driver
66 Elcamino 350/all dz parts,ac,windows,loaded,my driver
69 ss chevelle bb conv.fresh frame off
26 T sedan street rod