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Can you explain 90/80 90/50 No. 1 Common grades to me

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Forum topic by opalko posted 02-11-2014 09:10 PM 2474 views 0 times favorited 4 replies Add to Favorites Watch
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opalko

135 posts in 2496 days


02-11-2014 09:10 PM

Topic tags/keywords: lumber grades cherry

I’m looking at cherry lumber at some online dealers and they are listing the following grades:
- No. 1 common or better
- 90/80 Prime cherry
- 90/50 Prime cherry

Can you explain the differences (visual aids help!) and examples of what I’d want to use and where in furniture; for example if I am making a solid wood shaker style bed, what grades would work best for what parts?

Thanks.
Dukester


4 replies so far

View SASmith               's profile

SASmith

1850 posts in 2448 days


#1 posted 02-11-2014 10:50 PM

No 1 common should have a minimum of 66% clear (knot, stain, defect free) usable lumber.

90/80 Prime cherry 90% red on one side 80% red on the other
90/50 Prime cherry 90% red on one side 50% red on the other
I don’t know for sure but I assume that prime means FAS.

This link describes more on lumber grading
And another link on grading.

A link describing 90/80 and 90/50 cherry

-- Scott Smith, Southern Illinois

View joeyinsouthaustin's profile

joeyinsouthaustin

1294 posts in 1533 days


#2 posted 02-11-2014 11:20 PM

Great info post SASmith... It goes in my digidex.

-- Who is John Galt?

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opalko

135 posts in 2496 days


#3 posted 02-12-2014 02:15 PM

Thanks, great information here.

View mcase's profile

mcase

446 posts in 2590 days


#4 posted 02-12-2014 05:44 PM

FAS stands for firsts and seconds . Its what we would call premium, though in the lumber business the term premium is very misleading. The minumum lengths and width to qualify as FAS vary by species because tree species vary in size. So FAS are the longer wider boards that also provide the most defect free lengths for any given species. If you know your projected needs in terms of lengths you can save some bucks by using selected pieces of common.

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