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Old 01-20-2006, 10:07 AM   #1
Paul Findley
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The larger is 20" high with a 24"x24" top. The smaller is 12" high with a 16"x16" top. If I make another it will be 16" high with a 20x20" top. They easily nest.

http://www.crossfit.com/discus/messages/26/18650.jpg

Its all about 85 degrees. The top and bottom of the sides are sawn with a 85 deg angle so they rest on the floor and support the top cleanly. The sides of the sides are again 85 degrees. This allows for a stable box and hopefully kind if you miss.

http://www.crossfit.com/discus/messages/26/18651.jpg

I purchased the cheapest metal brackets at home depot that I could find (about 25 cents each). The 90s attach the lid to the sides at the bottom of the box I used flat stock bent to 90 degrees.

http://www.crossfit.com/discus/messages/26/18652.jpg

The handle holes are 4" from the top on two sides. 2x1" holes drilled on 3" centers then hogged out with a sawsall and filed.

http://www.crossfit.com/discus/messages/26/18653.jpg

The corners are cut to 45 degrees, glued with Elmer's polyurethane glue and brad nailed. The same glue is applied to the top. The screws I had were too long, so I cut them off and sanded them flush with the outside surface.

http://www.crossfit.com/discus/messages/26/18654.jpg

They are solid. I suspect with the extra brackets, these will hold up well. Oh yea the plywood is .7". Is it just me or is it impossible to by 3/4" plywood any more, must be a cost savings.

I used CDX and filled in gaps with wood putty. I roughly sanded the sides and knocked the corners off of the top. I may paint the sides. I was thinking I might use polyurethane with some sand in it on the top.
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Old 01-20-2006, 10:45 AM   #2
Joseph Hart
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Sweet jump box. 85 degrees, mitred corners, wood filler. Sure you are not Norm Abram indisguise? I am a measure twice cut once, get a new peice of wood and start again and hope I can find a use for the poorly cut scrap othere than a bonfire kind of guy. How long did it take you to make?

Joe
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Old 01-20-2006, 10:55 AM   #3
Paul Findley
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The 12" box came first, and I worked out my compound cut demons on it. I borrowed a Bosch 4000 table saw which made it all possible. Probably 3 hours for the 12" box. As I was creating on the fly, running for various tools and stuff. I did the 20" box the next day in about 1.5 hours with all the tools laying around in piles of sawdust in the garage (Norm I am not).
Did I mention my calculator battery died, and I needed it for "arctan", that slowed me down on day 1 too. Thanks for the kind words.
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Old 01-20-2006, 01:44 PM   #4
Jared Waltz
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FYI for future reference the Windows calculator has ARCTAN, change the 'View' menu from Standard to Scientific.

Also, the boxes look sweet!
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Old 01-20-2006, 06:53 PM   #5
Bret Parkhill
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ARCTAN? I should have paid more attention in geometry... Those boxes look great!
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Old 01-20-2006, 08:46 PM   #6
Paul Findley
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lol,

When your kid says "What do I need to know this stupid math for anyways?!?"

"Junior, I have one word for you ARCTAN, well, maybe that is two words"
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