Yes the original plans should have specified 18 8 sides instead of 18 5 for a box exactly 20 high assuming 3 4 stall mat rubber was used for the top.
Crossfit plyo box measurements.
I made the 24 box 22 5 high by 25 at the base.
That makes this size plyo a good fit for a lady who is trying to work herself up to the rx standard.
Bear in mind the article was written by and for carpenters of the lowest common denominator of questionable skill for whom a quarter inch of accuracy may have been an optimistic expectation.
I decided to customize it with krylon supermaxx all in one black hammered finish and krylon supermaxx all in one banner red that i picked up at walmart.
The 24 side allows for the woman s rx standard for crossfit.
My 14 box is 12 5 high and 19 at the base.
You will need the following dimensions cut.
Gluing and screwing what all diy projects need.
If you make a template of the 20 box and use that angle from the base of any other box they will fit together nicely.
To add the cross brace you ll need to cut your 2 4 so you have a 28 1 2 piece and an 18 1 2 piece.
Place them inside your box since your top is still off and screw them in to secure.
The 18 x20 x24 is a very versatile box.
Most men can start with a 20 box.
This plyometric box has three different heights 24 inch 20 inch 16 inch and is made from one sheet of plywood.
I put in the long brace first and then the shorter one.
This box is generally a good start for moderately athletic individuals.
If you want to do 28 box jumps just flip the box so that the longest side is vertical.
Crossfit wods prescribe 24 or 30 heights as a standard height for doing then as rx d.
Women can start with a 16 box.
This box is 28 x 24 x 20.
In other words this box will grow with your fitness level and is extremely adaptable.
If you re shorter than average out of shape or heavy don t feel bad about starting with a shorter one.
Rob i just made mine and took the sizes from the cfj article for the 20 boxes and scaled them.
Build a plyometric crossfit jump box three jumping heights depending on which side you face it allows three different heights 20 in 24 in and 30 in y.
Two 20 x 30 pieces two 20 x 24 pieces two 24 x 30 pieces i chose to make the pockets for each piece a different size.
2x 30 x 22 5 2x 30 x 20 trickiest part of the project.
For a 30 long side the pocket was 10.
To modify the design each piece extends to the full extent of the box dimensions.
If you want to do 20 box jumps flip it yet again.