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Forum topic by AwlThat posted 12-11-2018 04:20 PM 1096 views 0 times favorited 39 replies Add to Favorites Watch
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AwlThat

43 posts in 536 days


12-11-2018 04:20 PM

...to be parallel?

Assuming you found a straight board at the home center, how confident are you that the two faces are parallel to each and the two edges are parallel to each other?

I don’t have a jointer but I’d like to square up some 2×4’s, i.e. rip off the rounded corners, using just my table saw. I have seen plenty of videos on YouTube on how to do it, usually involving a jig of some type. But is all that really necessary?

I’m not looking to make fine furniture or anything, just a nice looking base for a Paulk-style table.


39 replies so far

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jonah

2075 posts in 3748 days


#1 posted 12-11-2018 04:22 PM

I’ve never found what I’d describe as a “straight” 2×4 at the home center. I’ve found ones that are straight-ish, and that required digging through probably 30-40 boards to find one good one.

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AwlThat

43 posts in 536 days


#2 posted 12-11-2018 04:27 PM

But even if the board was bent, how parallel do you think the faces are to each other?

Twisted is another story, but if it’s bent on one axis, how parallel do you think it is?

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jonah

2075 posts in 3748 days


#3 posted 12-11-2018 04:34 PM

It’s probably pretty parallel. Certainly when it was cut at the mill it was parallel.

You might have better luck with something like 2×10s. A lot of 2×4s have the pith in them and so they end up cupping, twisting, and generally misbehaving. With a 2×10 you can rip the pith out and end up with two more stable boards in the end. You’ll pay a little more, but it may be worth it.

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tomsteve

958 posts in 1669 days


#4 posted 12-11-2018 04:38 PM



You might have better luck with something like 2×10s.

- jonah


ive gotten some 2 by 10’s and 12’s that contained the pith but had a nice quatersawn outside of that area. seems i see tighter growth rings in the 10’s and 12’s,too.

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Monty151

72 posts in 291 days


#5 posted 12-11-2018 04:48 PM

Little known fact. This is the tree that Big Orange and Big Blue get their lumber from.

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Aj2

2378 posts in 2248 days


#6 posted 12-11-2018 05:33 PM

I found a perfect 2×4 once. I still remember that day it was the best day of my life.

-- Aj

View Bill White's profile

Bill White

5216 posts in 4410 days


#7 posted 12-11-2018 06:32 PM

Straight? The moment you bought it…..sure. The moment you got it home? NOT!

-- [email protected]

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AwlThat

43 posts in 536 days


#8 posted 12-11-2018 06:35 PM



Straight? The moment you bought it…..sure. The moment you got it home? NOT!

- Bill White

Like a ripe banana at the grocery store, right?

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Manitario

2778 posts in 3333 days


#9 posted 12-11-2018 07:00 PM

The only time I use a 2×4 without first running it through my jointer and planer is if I’m framing.

-- Sometimes the creative process requires foul language. -- Charles Neil

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AwlThat

43 posts in 536 days


#10 posted 12-11-2018 07:07 PM



The only time I use a 2×4 without first running it through my jointer and planer is if I m framing.

- Manitario

That’s great, if one has a planer and a jointer.

If you didn’t have those tools, in your experience, how close do you think you’d get to a square board if you just ripped it on your table saw?

View tomsteve's profile

tomsteve

958 posts in 1669 days


#11 posted 12-11-2018 07:16 PM



I found a perfect 2×4 once. I still remember that day it was the best day of my life.

- Aj2

doin some remodeling on a 60+ year old house?

View bondogaposis's profile

bondogaposis

5489 posts in 2801 days


#12 posted 12-11-2018 07:25 PM

When you find a perfect 2×4, go buy a sheet of plywood it might be true to size also, if so, you’ve hit a grand slam.

-- Bondo Gaposis

View Steve Peterson's profile

Steve Peterson

408 posts in 3532 days


#13 posted 12-11-2018 07:32 PM

The 2×4 that you buy from a home center may have been straight and parallel when it was cut. However, the log was green and will move as it dries.

-- Steve

View GrantA's profile

GrantA

1682 posts in 1857 days


#14 posted 12-11-2018 08:20 PM

I’ll trust a 2×4 to do lots of things but being straight & accurately dimensioned aren’t in the realm of possibility

View Mosquito's profile

Mosquito

9805 posts in 2742 days


#15 posted 12-11-2018 08:24 PM

Often times things like nots or checks will cause a 2×4 to not have parallel sides, so I’d say buy a hand plane to make one side a known straight, and then rip it on your table saw.

If I want square curners, I’ve done what others have suggested, and buy 2×10 or 2×12’s and rip them down. Typically on the band saw, because I’ve seen some pretty nasty 2x’s cut on table saws immediately try to close up the cut on the blade. At the very least, don’t do it with out a riving knife or tall splitter

-- Mos - Twin Cities, MN - http://www.youtube.com/MosquitoMods - http://www.TheModsquito.com

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