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Matthiasa

Diamond Member
May 4, 2009
5,755
23
81
But on top of that, the wood they break is ALWAYS endsawn, and many times it's pre-dried in an oven to make it more brittle.

Maybe where you were, were I was it was standard lumber and you could really hurt yourself if you hit any of the knots in the wood.
Since yes I've had to use wood with knots in it even in competition...

FYI you will likely never break boards that isn't cut "end grain", or if it is and hit against the grain.
There is a reason humans have made structures out of it for 1000's of years.
 

Sonikku

Lifer
Jun 23, 2005
15,898
4,922
136
gm4ZElQ.jpg
 

Pulsar

Diamond Member
Mar 3, 2003
5,224
306
126
Maybe where you were, were I was it was standard lumber and you could really hurt yourself if you hit any of the knots in the wood.
Since yes I've had to use wood with knots in it even in competition...

FYI you will likely never break boards that isn't cut "end grain", or if it is and hit against the grain.
There is a reason humans have made structures out of it for 1000's of years.

Huh?

2x4's are cut with the grain. I.e. - their long dimension is the same direction as the grain. A karate board is generally cut with the long dimension against the grain.

Karate board:
karate_board_break-300x223.jpg


NOT A Karate Board:
chop.jpg


Baking is against the rules morally, but that didn't stop a lot of the kids parents from giving little Johnny a 'leg up' on the competition. At one test I vividly remember, our Sensei picked up a kid (Charlie's) boards and looked at them. They broke them over his head. Charlie ended up using the Sensei's board. He still did very well, but it was funny as hell.
 
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Matthiasa

Diamond Member
May 4, 2009
5,755
23
81
Huh?

2x4's are cut with the grain. I.e. - their long dimension is the same direction as the grain. A karate board is generally cut with the long dimension against the grain.

Karate board:
karate_board_break-300x223.jpg


NOT A Karate Board:
chop.jpg


Baking is against the rules morally, but that didn't stop a lot of the kids parents from giving little Johnny a 'leg up' on the competition. At one test I vividly remember, our Sensei picked up a kid (Charlie's) boards and looked at them. They broke them over his head. Charlie ended up using the Sensei's board. He still did very well, but it was funny as hell.

You are cutting ~1 foot squares with the grain going the long way if you do so way is with the grain the other is not... 1x12s were used which is a standard size for lumber.
AKA it is how you hold it. The second picture if the board was turned it would be the same as the first.
 

Imp

Lifer
Feb 8, 2000
18,828
184
106
I've had the worst luck with Kraft Dinner boxes... Usually poke the "open here" with the end of a fork or spoon to just make a hole.
 

Apex

Diamond Member
Oct 11, 1999
6,511
1
71
www.gotapex.com
Maybe where you were, were I was it was standard lumber and you could really hurt yourself if you hit any of the knots in the wood.
Since yes I've had to use wood with knots in it even in competition...

FYI you will likely never break boards that isn't cut "end grain", or if it is and hit against the grain.
There is a reason humans have made structures out of it for 1000's of years.

Against the grain is definitely much more difficult. However, there are plenty of bat break videos out there. :) Painful but doable.