Thanks Serge, you understand me right. That is, now I am waiting more opinion on this issue. I do not know how much it cost some where, but for me here it is not expensive (~4$ for 1kg), though I can't find aircraft grade plywood at all. Again, I want to use it just for the spars, so, the weight penalty is not so important due of small quantity. But I guess it could be used for boat as well.
BR, Alex Birca Moldova -----Original Message----- From: Serge F. Vidal [mailto:serge.vi...@ate-international.com] Sent: Wednesday, August 20, 2003 12:16 PM To: 'KR builders and pilots' Subject: KR>Isn't that PCB idea great? Netters, What I really like about the KRNet is the incredible amount of creativity that we manage to pool together. I think that PCB idea is a perfect example. Indeed, it is fiberglass, of the best kind (multiple laminations). And I think it is the first time somebody tries to use it as an aircraft material, but surely, it can't be worse than our usual home-made, first-time builder fiberglass! Now, if somebody with a good knowledge of material properties could study typical PCB sheets to compare its properties with plywood and fiberglass, I think it would not be wasted effort. How much does PCB sheet cost, by the way? Serge Vidal KR2 ZS-WEC Johannesburg, South Africa _______________________________________________ see KRnet list details at http://www.krnet.org/instructions.html