Balsa-sandwich

Hello Friends,
Anyone know where can I buy balsa for build my Pylonracers ?
I try balsa quality abouth 100gr-dm3......
A few years ago (2003) i bought many good balsa during the F3D W.C in Czec.Rep. Melnik.............but as time passes , the planes break and balsa ends
Thanks of help
Paolo

Hello Paolo,

http://www.thomabalsa.de

http://www.heerdegen-balsaholz.de

http://www.balsawood.de

at least one of them offers selected light-Balsawood.

Many thanks of help
Paolo P.