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**Indian Butt Magic** · 08-17-2007, 02:13 PM

Wow,
good questions.

The springs were custom made. They stand well over 1000kg each and the boards will spread the weight evenly so they are more than enough to stand our practise.
We talked about car tires but had the good chance of getting the springs quite cheaply.

The flooring is grooved from underneath and attached to beam with hooks made from nails.
If you look at pictures at:
http://aky.kuvat.fi/kuvat/Kendo/Dai+...rakennusvaihe/
you'll find pictures of both the hooks and the grooves. This way there will be no nails or other sharp things on the top of the floor.
Also the middles of the boards sides have small grooves and they are attached to each other by "cookies" made from wood.

Yes there will be some shrinkage, so we will do the final tightening of the floor in wintertime when its most driest.

Sorry, I'm not a professional builder so my answer may be somewhat vague,
but I can ask our dojo-building-senseis and get back to you afterwards.

08-17-2007, 02:13 PM	#24
Indian Butt Magic Join Date Oct 2005 Posts 439 Senior Member	Wow, good questions. The springs were custom made. They stand well over 1000kg each and the boards will spread the weight evenly so they are more than enough to stand our practise. We talked about car tires but had the good chance of getting the springs quite cheaply. The flooring is grooved from underneath and attached to beam with hooks made from nails. If you look at pictures at: http://aky.kuvat.fi/kuvat/Kendo/Dai+...rakennusvaihe/ you'll find pictures of both the hooks and the grooves. This way there will be no nails or other sharp things on the top of the floor. Also the middles of the boards sides have small grooves and they are attached to each other by "cookies" made from wood. Yes there will be some shrinkage, so we will do the final tightening of the floor in wintertime when its most driest. Sorry, I'm not a professional builder so my answer may be somewhat vague, but I can ask our dojo-building-senseis and get back to you afterwards.
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