I have collected a few shells over winter while spearfishing and have had them on display on my kitchen window sill. figured i would have a go at cleaning up and polishing a few.
SAFETY:
Always wear correct PPE when sanding abalone, the dust can be very bad for your lungs. I swapped to a dust respirator while using a dremel to prevent inhaling the dust.
the key points are take your time and go slow as you can easily put holes in the uneven surface. also always wear a mask/respirator while sanding your shells to avoid breathing in particulates. give us a like if you think i did alright with my polishing