Re: [ULF-1] aerolite glue

I have used Shell Epon 828 resin and V40 hardener on Member 60 airplanes and it works superbly. Joints do not have to be perfect and if it's too runny for a given application, you can add cotton flox to thicken it. Cabosil is also used to thicken it but flox creates a structural bond, cabosil does not. You can thin it 50% with lacquer thinner and use it for a varnish. All you have to do is scuff-sand the varnish on the bond lines and points and you can use more Epon 828 to bond the varnished part to something else; in other words, no need to keep varnish off the surface to be glued as must be done with other glues. You can use the same 50% varnish to coat the entire Member 60 structure when it is complete and all adhesive and varnish in the entire aircraft will be completely compatible and resistant to the solvents in all the commonly used covering systems. It's now made by Hexion so I don't think the "Shell" brand is used any more, and I believe the hardener is now called Epikure 3140. You can get it from Member 81-Member 48 Chemical who have warehouses on both coasts and in Illinois so shipping is not too expensive.

Chris


[email] wrote:

Thank, Rex. I was thinking of using polyurethane based adhesives on all the small sticks and gussets (instead of Aerolite) and the T-88 on the major structural assemblies to save weight.
Member 67
---- Member 82 <[email]> wrote: 
  

Hi Member 67
               You may have a problem obtaining Aerolite in the states 
as the FAA no longer approve it for use in certified aircraft.T88 is used
in the home building movement and is well liked.
Rex Member 82
    

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