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Author Topic: Need 2x4 extension for slab holder  (Read 1287 times)

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Online Brad_bb

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Need 2x4 extension for slab holder
« on: October 20, 2017, 10:06:16 pm »
So I was thinking of building a slab holder to cut my slabs into firewood with the chainsaw.  So yesterday I was going by my elderly neighbors farm and he had been cleaning out his barn and set these folding "saw horses" out by the road for anyone to take.  Naturally I saw them as my potential slab holders.  They are well built from high grade SYP 2x4's and fold up via pivot bolts in the middle.
***The problem is...the 2x4's that stick up above the pivot point need to be about a foot longer to hold at least 4-6 slabs.  My though it to merely add slip-on extensions to those 2x4's.  I'm thinking a metal rectangular sleeve about 9 inches long.  A 12 inch piece of 2x4 will slip half way in the sleeve and get screwed in place, and that unit will just slip over the end of the saw horse 2x4.  It doesn't need to screw on.  By having 6 extensions for each sawhorse that just slip on and off, I don't have to change the saw horse at all and it will still fold up like it does now. 
***So is there metal tubing that is made to slip over a 2x4  (1.5x3.5 inside dimensions), either steel or aluminum, or a formed sheetmetal seamless tube like the red pic shown below?

 

 
 

 
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Offline ljohnsaw

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Re: Need 2x4 extension for slab holder
« Reply #1 on: October 20, 2017, 10:39:50 pm »
That sounds too complicated and expensive.  What about scabbing a section of 1x4 on the "outside" face of each joint so that it does not interfere with folding.  A couple of lag bolts each and your done.
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Offline Gary_C

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Re: Need 2x4 extension for slab holder
« Reply #2 on: October 21, 2017, 12:38:16 am »

***So is there metal tubing that is made to slip over a 2x4  (1.5x3.5 inside dimensions), either steel or aluminum, or a formed sheetmetal seamless tube like the red pic shown below?


Not that I know of. You could always get 2x4 steel rectangular tubing with 3/16 or 1/4 inch wall but either is heavy 6.88-8.9 lbs per foot and expensive.

Better idea would be to close them up and redrill the pivot to about the center of the length and let it open further. But if you do that, you should use light chain or cable to limit the opening as the 2x4's used now probably will not stand up to the additional stress.
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Online Brad_bb

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Re: Need 2x4 extension for slab holder
« Reply #3 on: October 21, 2017, 01:30:03 am »
I thought about changing the pivot point, but that would lower the slabs too much.  The height now is just perfect for chainsawing without bending.  If I permanently scab pieces on to the existing 2x4s, then it will be too long to fold up and fit neatly in thed of the truck on the floor.  I'm pretty sure the best solution is a removable/slip-on extension is the way to go in this case.
Anything someone can design, I can sure figure out how to fix!
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Offline Peter Drouin

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Re: Need 2x4 extension for slab holder
« Reply #4 on: October 21, 2017, 05:48:43 am »
Steel studs.
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Offline Savannahdan

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Re: Need 2x4 extension for slab holder
« Reply #5 on: October 21, 2017, 06:53:38 am »
You could use some 2X4 extensions that attach with bolts, lock washers and wingnuts.  When finished you could flip them to the down position for storage and transporting. You only need to do the outside 2x4s.
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Online Brad_bb

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Re: Need 2x4 extension for slab holder
« Reply #6 on: October 21, 2017, 07:39:13 am »
Steel studs will slip over a 2x4?

Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline Don P

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Re: Need 2x4 extension for slab holder
« Reply #7 on: October 21, 2017, 09:06:43 am »
There's a few in the barn, I'll check today.
Another thought, can you attach the extension in such a way that it can pivot upright for use and swing down for transport?

Offline bigred1951

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Re: Need 2x4 extension for slab holder
« Reply #8 on: October 21, 2017, 11:01:40 am »
Why not just turn it upside down and put a 2x4 across what is the top now. So when you turn it wonít be a saw horse anymore or fold up and it wonít tip over.

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Re: Need 2x4 extension for slab holder
« Reply #9 on: October 21, 2017, 02:06:04 pm »
 Thanks Don! Iíll have to think about the pivoting thing. It might get too complicated to try to keep them out of the way for transport.

Bigred1951, I donít want to flip them upside down, I think they would be too top-heavy with the slabs with the smaller bottom and more likely to tip over. Iíve studied it, and really I just need another 12 to 15 inches on the end of those 2x4's.
 
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline Peter Drouin

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Re: Need 2x4 extension for slab holder
« Reply #10 on: October 21, 2017, 03:27:28 pm »
Steel studs will slip over a 2x4?



Last time I looked yes, But you might have to belt sand the wood on the 2x4s down some.
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And a license NH soft wood grader.
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Offline bigred1951

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Re: Need 2x4 extension for slab holder
« Reply #11 on: October 21, 2017, 05:22:40 pm »
I meant add a 2x4 across for stability so it couldnít tip over. Kind of like a table bottom

Offline Don P

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Re: Need 2x4 extension for slab holder
« Reply #12 on: October 21, 2017, 06:42:26 pm »
The steel studs I have measure 3.5" ID x 1.25" as opposed to 1.5" for a wood stud. there is about a 1/8"  turned in edge on the outer edges of the C, so you'd need a groove up the sides on one face. I'm no expert on steel studs, there may be other styles. I don't think this one would hold up to the kind of banging I would do while loading. It wouldn't take too much to do a little cutting and weld a tube out of the stuff though.

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Re: Need 2x4 extension for slab holder
« Reply #13 on: October 22, 2017, 10:17:04 am »
I've never used steel studs but I think they are kind of thin gauge?  For my sleeves I think I would need 16 gauge minimum (0.060) and 12 gauge maximum (.120).
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

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Re: Need 2x4 extension for slab holder
« Reply #14 on: October 22, 2017, 01:49:05 pm »
I'm going to go check out this deck rail material at Menards and see how strong it is.  If thick enough, it might be strong enough.
 

 
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline Don P

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Re: Need 2x4 extension for slab holder
« Reply #15 on: October 23, 2017, 07:44:37 am »
Yeah, I'd guess the studs are more like 20-30 thou thick. The track, top and bottom plate, is a bit heavier but still not much. It is 3-5/8" id bottom and 1" straight sides.

Look at those sleeves with a cold morning and banging slabs in mind, are they going to be brittle?

Offline WDH

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Re: Need 2x4 extension for slab holder
« Reply #16 on: October 23, 2017, 07:48:51 am »
I would slide a piece of schedule 40 PVC pipe over the 2x4's. 
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Offline gspren

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Re: Need 2x4 extension for slab holder
« Reply #17 on: October 23, 2017, 09:17:41 am »
 Check onlinemetals.com and search rectangular aluminum tubing. 2"x4" with a 1/4" wall.
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Re: Need 2x4 extension for slab holder
« Reply #18 on: October 23, 2017, 09:30:09 pm »
Thanks for looking Don P.

WDH and gspren great suggestions.  The aluminum is a bit pricey, but if the deck sleeve and PVC don't workout, I'd consider investing  in it to do it right.
Anything someone can design, I can sure figure out how to fix!
If I say it\\\\\\\'s going to take so long, multiply that by at least 3!

Offline Wudman

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Re: Need 2x4 extension for slab holder
« Reply #19 on: October 24, 2017, 11:25:34 am »
How about some "boxed" extensions out of 3/4 plywood glued and screwed.  You could slip them on or off as needed.

Wudman