jbpatton
Oregon
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Joined: 09/18/2011
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Rail Road ties cut to 1 foot sections
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Earl E
Green Valley, AZ
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Pete_k wrote:Thats normal with fresh treated yellow pine. Now let it dry out for a few months before cutting it. Then it does not crack as bad. But hard wood is best for this .
If it were me, cut pieces of plywood to fit these. Screw it down both both sides. This will lock it all in place for a while.
Pete
Pete has the easiest answer. As another poster mentioned, the pith dead center is the problem. If the weight were on it like a post there would be no problem; it is cutting it into a small piece and laying it on its side. But as Pete says, just screw some scrap pieces of waterproof plywood on each side and the suckers will last forever. There is plenty of strength.
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eHoefler
ozark mountains
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I cut 3/4" treated plywood into 12" squares, glued and screwed them together to make 4" thick blocks out of them. Been using them for about 10 years now, no problems at all.
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msd
Middle TN
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I made blocks out of Trex decking. I used four pieces. Put two pieces side by side, measure across them and then cut four pieces to that length. Take two pieces side by side and place the other two on top but going across the bottom two. Glue and screw together using exterior screws and polyurethane glue (Gorilla Glue). I made four blocks like this. Trex is heavy so this size is easy to handle. I also made four blocks the same way out of 2X6 pressure treated decking to go in between. Now I have enough blocks to make sure all four jacks aren't fully extended.
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dadd45
northeast NEBR USA
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eHoefler wrote:I cut 3/4" treated plywood into 12" squares, glued and screwed them together to make 4" thick blocks out of them. Been using them for about 10 years now, no problems at all.
X2......with cross orientation between each sheet of plywood......rubber base plate cut from old tire to prevent slippage....1/2" hole drilled in each corner so awning tool can pull them out from under........IMHO, of course
DadD45
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RoyB
King George, VA
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I get a lot of miles out of plain ole 2x6's cut to size... But 4200lbs isnt much weight to deal with.
When mine split up they become fire kindling so nothing wasted...
My Posts are IMHO based on my experiences - PM me
Roy and Carolyn
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bpounds
Whittier CA
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I've never understood the need or desire for tall blocks. It is just farther for the fiver to fall if something wrong happens. I do understand the need for a wide platform if you're parked on dirt, grass, sand, mud, but a single thickness of 3/4" plywood is still better than a tall block. It's the footprint that is important, not thickness.
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jetenbu
Southeast Texas
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I cut some 3/4 inch plywood into 14X14 inch squares, glued 2 together with offset grain orientation and put 1 1/4 inch drywood screws in both sides to hold them together. Never had a problem. I also put an 'i' bolt into the sides and put a piece of cord on then so I can pull them out when needed. Never a crack or split of any kind. Cost was $0.00 since this was scrap already. Not real thick, just use to spread the weight on the jacks. Never a problem, works for me. I painted them black outdoor paint just for fun. LOL....
Jim
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laknox
Arizona
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Redwood?
Lyle
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lar5camping
Rocky Mountains
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Try using 1/4 inch plywood sandwiched in between the 2 x whatever you have. I have many of these: two pieces of 2 inch thick wood about 14 x 14 square with a 1/4 inch plywood piece glued in between. I then use drywall screws. These last for years and never split or crack. I use them to drive up on, put under the jacks, front hydraulics, etc. Also have a few 12x12 pieces of 2 inch wood with a single 1/4 ply for less height needs.
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