Grit (both CAMI amd FEPA) is based on the size of the grains that pass through a series of increasingly fine mesh sieves, with the numbers representing how many holes per a given area there are in the sieve. However, the size of those holes depends on both the density of the wires and the thickness of the wires (thicker wires = smaller holes if you have the same density of holes), so I would imagine that the two standards diverge because of that. I don't know for sure though, and those standards are expensive to buy
I don't think you could use SI prefixes with the grit systems, but ultra-fine sandpaper often abandons the grit systems and just gives you an average size of grain in micrometres
It's not cheap or particularly easy to get, but it's out there. Seems like it's basically only used for particularly rough hardwood flooring and sometimes shaping drywall
Peel them off to load your slingshot. You make it out of paper, spray glue, and a bucket of rocks or stones (which are interchangeable terms and I bring this up for no reason in particular).
9 Comments
betterdeadthanreddit@lemmy.world · 40 pts · 351d
Gonna have to file that away.
Onomatopoeia@lemmy.cafe · 7 pts · 351d
Fine... Take your upvote
vatlark@lemmy.world · 10 pts · 351d
its the same at the low end 60 = p60, 120 = p120 but then it diverges. Odd. Can I still use SI prefixes with it? milli-P giga-P?
Skua@kbin.earth · 10 pts · 351d
Grit (both CAMI amd FEPA) is based on the size of the grains that pass through a series of increasingly fine mesh sieves, with the numbers representing how many holes per a given area there are in the sieve. However, the size of those holes depends on both the density of the wires and the thickness of the wires (thicker wires = smaller holes if you have the same density of holes), so I would imagine that the two standards diverge because of that. I don't know for sure though, and those standards are expensive to buy
I don't think you could use SI prefixes with the grit systems, but ultra-fine sandpaper often abandons the grit systems and just gives you an average size of grain in micrometres
Nougat@fedia.io · 8 pts · 351d
Where the hell do you get 12 grit and what the hell do you do with it?
Skua@kbin.earth · 6 pts · 351d
https://marshalltowntools.co.uk/marshalltown-sandpaper-for-sanding-rasp-12-grit-14-x-8-pack-of-10-m5749?srsltid=AfmBOorxI8-Gk0GU2Z86q4SCpp2-1ntZV3sEXPH6AQagIV6qhnFy2CUR
It's not cheap or particularly easy to get, but it's out there. Seems like it's basically only used for particularly rough hardwood flooring and sometimes shaping drywall
JonnyRobbie@lemmy.world · 1 pts · 350d
Ahh, perfect for my kitchen knife.
Skua@kbin.earth · 1 pts · 350d
Could probably make it serrated with that stuff
betterdeadthanreddit@lemmy.world · 4 pts · 351d
Peel them off to load your slingshot. You make it out of paper, spray glue, and a bucket of rocks or stones (which are interchangeable terms and I bring this up for no reason in particular).
Darkassassin07@lemmy.ca · 1 pts · 351d