Cedar Thickness

[matt23]

Im making a friend a wr cedar board the same shape and roughly the same thickness as this paulownia board. 42x15.

http://postimage.org/image/3u8fkmqv1/

The paulownia board started out at about 12mm and has very bladey rails, its similar to another board that Ive ridden in all sorts of conditons (so I know the paulownia can take it) I started a couple of other cedar boards at 22mm thickness but decided to get it cut length ways so Ive ended up with 10mm thickness. When I glued up the blank yesterday. One plank was very concave as a result of cutting? Every time I clamped, the boards would jump out. Afer four attempts I decided to use another piece as the first bit had too much concave. Is 10mm for cedar to thin? Im concerened it might split length ways? + as the centre board has a bit of conave to it, will that weaken it?

[mrmike]

I have split a few to say the lest. 1/2" is the thinist I will go now or you will be doing a lot of this.

[bgreen]

Mike,

What are the three black pieces perpendicular to the crack made from and their purpose (e.g to bind the cracked halves or prevent further cracking)? Does this method generally work?

Bob

[matt23]

Cheers Mike, its glued up so Ill finish it and see how he gets on, Ill go thicker on the next one. Thats an amazing finish, is it varnish?

[mrmike]

the black is ebony to hold the split together glued with epoxi. won't split there again but some other spot. I made it to thin but I realy like this board. so it will be my franken board

[bgreen]

Mike,

Thanks. Is ebony for the colour contrast or does it have other qualities?

Bob

[mrmike]

very strong and expensive get it from old painos that people throw away (the black keys) are worth 100ers of dollars