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Forum topic by dawsonbob posted 230 days ago 577 views 0 times favorited 23 replies Add to Favorites Watch
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dawsonbob

381 posts in 351 days


230 days ago

Okay, I have what may sound like a really dumb question to those of you who have been working with wood for awhile. I’m very new to woodworking, and there are so many things that I simply don’t know yet. I do try to look things up for myself most of the time, but this one has me stumped, so far: what the heck is “4/4” or “8/4” etc. lumber? I keep seeing references to it, but I’m totally clueless (as I am about most things). Is there a glossary of terms somewhere?
Newbie needs to know. Thanks in advance.

-- Mistakes are what pave the road to perfection


23 replies so far

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JustJoe

1554 posts in 634 days


#1 posted 230 days ago

HUh? ex·pire ikˈspīr/ verb gerund or present participle: expiring 1. (of a document, authorization, or agreement) cease to be valid, typically after a fixed period of time. “the old contract had expired” synonyms: run out, become invalid, become void, lapse; More end, finish, stop, come to an end, terminate “my contract has expired” (of a period of time) come to an end. “the three-year period has expired” (of a person) die. synonyms: die, pass away/on, breathe one’s last; More informalkick the bucket, bite the dust, croak, buy it, buy the farm; dateddepart this life “the spot where he expired” 2. technical exhale (air) from the lung. synonyms: breathe out, exhale, blow out, expel

Trying to wrap my head around how your mind is expiring, it’s just not computing here….

8/4 and 4/4 are thicknesses of lumber in 1/4”. 4/4 is 1” before you run it through the planer. If you need 3/4” finished hardwood then buy 4/4 rough. 8/4 is of course 2” before you run it through the planer.

-- This Ad Space For Sale! Your Ad Here! Reach a targeted audience! Affordable Rates, easy financing! Contact an ad represenative today at JustJoe's Advertising Consortium.

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patron

12954 posts in 1937 days


#2 posted 230 days ago

it is sold by 1/4” in the rough

4/4 = 1”
5/4 = 1 1/4”
8/4 = 2”
etc.

figure 1/4” for milling
so 4/4 will net back to 3/4” actual planed

you can get more than that if you plane easy
the cost of wood is usualy cheaper this way
you just don’t get to look at the grain as easily

store milled wood
can still be not straight
as it can move after milling

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

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dawsonbob

381 posts in 351 days


#3 posted 230 days ago

@JustJoe
At my advanced age I fear that incipient senility may be setting in. Senility may not be here yet, but it looms large on the horizon (which, hopefully, is distant). At any rate, I’m sure that my razor-sharp mind may expire at any time. Thankfully, not before my question was answered; Thanks, JustJoe. I can rest peacefully now, waiting for the expiration date to arrive.
By the way, is there a glossary of terms somewhere?

-- Mistakes are what pave the road to perfection

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dawsonbob

381 posts in 351 days


#4 posted 230 days ago

Thanks, patron. I think I’ve got it now. That question has been bugging me for awhile now. Its all so simple, once you’ve explained it.

-- Mistakes are what pave the road to perfection

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TerryDowning

993 posts in 713 days


#5 posted 230 days ago

Just to clarify a bit more.

4/4, 8/4, etc. is specifically for rough sawn hardwoods. (you may see surfaced 4 sides (S4S) sold as 4/4 but when you measure it, it will measure approximately 3/4.)

Dimensional Lumber on the other hand (Typically the white wood stuff at the big box store Pine, Fir, Hemlock, etc.) is sold by nominal dimension
2×4 = 1 1/2×3 1/2
4×4 = 3 1/2×3 1/2
1×6 = 3/4×5 1/2

and those 1/2 inches are +- 1/8.

It is a bit confusing when just starting out.

-- - Terry

View bondogaposis's profile

bondogaposis

2439 posts in 947 days


#6 posted 230 days ago

And while we’re at it, I might add that S2S = surfaced 2 sides, in case you run into that terminology. The standard for 4/4 S2S hardwood lumber is 13/16” thick, unless you buy it at the BORG, they are milling their hardwood to 3/4”.

-- Bondo Gaposis

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dawsonbob

381 posts in 351 days


#7 posted 230 days ago

@TerryDowning.
Thanks for the clarification. You’re right: it is confusing when you’re just starting out, and I’m certainly just starting out. Now I’ll be able to sleep at night.

-- Mistakes are what pave the road to perfection

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dawsonbob

381 posts in 351 days


#8 posted 230 days ago

Thanks, bondogaposis. That much I already knew. One of the very, very few things I knew. I feel like an old salt now.

-- Mistakes are what pave the road to perfection

View Smitty_Cabinetshop's profile

Smitty_Cabinetshop

9571 posts in 1214 days


#9 posted 230 days ago

If I run across a glossary of woodworking vernacular, I’ll pass it along. Until then, asking is all there is. No harm no foul in learning mode, that’s for sure.

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive

View Knothead62's profile

Knothead62

2342 posts in 1557 days


#10 posted 230 days ago

My father always said the only dumb question was the one not asked. I learned a couple of things because of your inquiry.

View patron's profile

patron

12954 posts in 1937 days


#11 posted 230 days ago

here is a link to wikipedia
about woodworking terms

might find some help there

http://en.wikipedia.org/wiki/Glossary_of_woodworking

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

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dawsonbob

381 posts in 351 days


#12 posted 230 days ago

Thanks, Smitty_Cabinetshop. I — and probably a lot of other newbies — would really appreciate it.

-- Mistakes are what pave the road to perfection

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Smitty_Cabinetshop

9571 posts in 1214 days


#13 posted 230 days ago

well, now. David to the Rescue! Well done!

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive

View dawsonbob's profile

dawsonbob

381 posts in 351 days


#14 posted 230 days ago

Funny, Knothead62, my father said the same thing, and I’m a firm believer in asking and answering.

-- Mistakes are what pave the road to perfection

View Smitty_Cabinetshop's profile

Smitty_Cabinetshop

9571 posts in 1214 days


#15 posted 230 days ago

And ya know, Terry D hit the nail on the head by including ‘dimensional lumber’ in the discussion. Ask for a 1×5 and you’ll get what he described. Ask for a 4/4 piece of wood and the code is out there for all to see: you really, really want stuff that’s 1” thick.

-- Don't anthropomorphize your handplanes. They hate it when you do that. -- OldTools Archive

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