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Author Topic: FEPA graded sandpaper  (Read 3295 times)

slap

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FEPA graded sandpaper
« on: August 08, 2008, 01:20:14 PM »
I made a supply run to Autozone today for some sandpaper. The store was about to close so I had to grab what I needed quickly. When I got home I noticed the assortment package of 3m imperial wet/dry sandpaper I grabbed is FEPA graded. P220 - P800. Not a big deal, but I've always assumed US paper was ansi. FYI
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charlest

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Re: FEPA graded sandpaper
« Reply #1 on: August 08, 2008, 11:07:11 PM »
I understand that more and more American manufacturers are going to the FEPA grading system because, like Abralon pads, the particles are more consistent in size and the variance of the particles on any one numbered sheet/pad are smaller so the numeric grading is more accurate and consistent.

I'd only suggest you be aware of which "P###" FEPA grade is equivalent to which "###" CAMI grade. (not ANSI, Army Navy STandard(?), that I am aware)
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slap

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Re: FEPA graded sandpaper
« Reply #2 on: August 09, 2008, 11:47:35 AM »
Due in part to the posts in this forum, I immediately noticed the P grading. I wanted a 400 grit cami base grit so I used a piece of P800 wet/dry then high gloss and it worked fine.
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charlest

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Re: FEPA graded sandpaper
« Reply #3 on: August 09, 2008, 01:12:31 PM »
quote:
Due in part to the posts in this forum, I immediately noticed the P grading. I wanted a 400 grit cami base grit so I used a piece of P800 wet/dry then high gloss and it worked fine.
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That's following the chart and common sense.

I still go by the numbers myself, but I am a detail person. I feel that what grit level you use, be it FEPA or CAMI, the desired ball reaction from a given coverstock's strength should govern which grit you choose as your base.

Examples:
When I was "resetting" the surface of an Ogre Pearl, I used 600/P1200 grit as my starting point because of that coverstock's strength (friction level might be a better description.)
When "resetting" a Red/Black Monster, I started with 400/P800 grit.
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TTforshort

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Re: FEPA graded sandpaper
« Reply #4 on: August 09, 2008, 02:50:15 PM »
quote:
I understand that more and more American manufacturers are going to the FEPA grading system because, like Abralon pads, the particles are more consistent in size and the variance of the particles on any one numbered sheet/pad are smaller so the numeric grading is more accurate and consistent.

I'd only suggest you be aware of which "P###" FEPA grade is equivalent to which "###" CAMI grade. (not ANSI, Army Navy STandard(?), that I am aware)
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ANSI=American National Standards Institute

TT
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charlest

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Re: FEPA graded sandpaper
« Reply #5 on: August 09, 2008, 03:39:11 PM »
Thanks, Doug.
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