Primitive Archer

Main Discussion Area => Bows => Topic started by: BrokenArrow on October 27, 2014, 03:58:20 pm

Title: Laminations done with Smooth On EA 40 and steambending
Post by: BrokenArrow on October 27, 2014, 03:58:20 pm

I finished a hickory back jatoba core lamination done with Smooth On EA 40 Epoxy which was mixed 2 parts A to 1 part B.
This should have made the epoxy safe to 217 degrees F as steam is 211 degrees F.
I steamed it for 2 hours and it has held together fine :)
But as I was warned the epoxy could not hold the wood at the bend it was set at as it returned to almost straight position :(
So the experiement both succeeded and failed and I will not do that again.
If you want epoxy to hold a bend it must be done when the epoxy is drying.

Title: Re: Laminations done with Smooth On EA 40 and steambending
Post by: Pat B on October 27, 2014, 05:13:26 pm

You are fighting the glue line. You should get your profile shape for the belly and backing before glue up.

Title: Re: Laminations done with Smooth On EA 40 and steambending
Post by: mikekeswick on October 28, 2014, 03:33:05 am

Yes the glueline won't plastify with the heat only the wood.