wood blades glue joints

[mbk]

  Hi all I was wondering if others uses biscuit jointers and biscuits between the joints or just glue them together on wood blades. I used them on two sets of blades and they seem to hold up good I was just wondering if its any better or would just glueing them is good enough.  Thanks
                                                                              max

[imsmooth]

You can read my blade carving tutorial.  I join several pieces of pine using glue and clamps.
http://www.mindchallenger.com/wind/bladecarving.html

[SparWeb]

Just glue....



An extra problem to consider, if you need to use special joining techniques (for whatever reason) is the weight of the blade, and the distribution of weight.  Making a cavity between two layers, for holes or pegs or whatever, that isn't subsequently filled becomes a change in density.  Balancing the blades becomes more difficult. 

Just speaking in broad terms - one type of joint may not cause such problems, another might.  Plus it's more work...

[mbk]

  It did take some extra time to do and there was another problem or maybe not a problem but its where the root is where ya have to take the wood way down you can see a couple  of the biscuits i wasnt thinking about that when i put them in but i filled the biscuit with wood filler and sealed them real good.when i had them down this week they still looked ok but i refinished them again so maybe good for another year.the next set i make for another turbine will be witout them prolly.