Can anyone tell me the requirement as far as GL rating is concerned for
birch ply for kr fuselage sides, I have the option of GL1 or GL3, GL1 is
apparently certified and inspected by microscope, and very very expensive,
while GL3, has "minor" defects, but is affordable, my question is,
Check out Baltic Birch.
I have boiled it, beat it with a hammer, cut it into 1" wide strips and bent
it to breaking point and I have not seen any difference between it and
"Aircraft Grade " sitka spruce and it's about $14 for a 60" x 60" X 1/8"
Pat Driscoll
Saint Paul, Mn
patric...@usfamily.n
Pat,
It pays to know your wood, some of the "Baltic Birch" is glued with water proof
glues, and some isn't. A test of a small sample from each sheet wouldn't be a
bad idea. Back in the 70's I tested some non aircraft grade Finnish birch
plywood, several pannels were boil proof, and one came apar
Bill Higdon wrote: It pays to know your wood, some of the "Baltic Birch" is
glued with water proof glues, and some isn't
Thanks for the pointer. I figured that the first two sheets I bought came from
the same batch and tested a piece of one sheet. I have since bought 5 more
sheets so I'll run
4 matches
Mail list logo
