Primitive Archer
Main Discussion Area => Bows => Topic started by: Fred Arnold on July 29, 2012, 03:17:11 pm
-
I need some advice.
Just getting ready to glue up a couple projects. A splice on a set of billets and bamboo backing on an Osage T/D.
I've never used urac and directions are a bit vague. Should I lightly coat both surfaces or will a medium coat on only one surface before clamping suffice?
-
For any glue job I am partial to glue on both pieces.....for my thinking it helps avoid a glue starved area.....
-
I agree with Stonedog.
-
I agree too...and don't skimp on the glue. You can wipe off any excess.
I measure by volumn and not by weight and never had a urac glue failure.
-
I glued them up spreading all surfaces with a palette knife. Wasn't sure how much to mix but ended up with plenty.
Once clamped in I placed them all out back on the workbench. I wrapped the bamboo backed limbs with bandage and clamps on both ends. With the weather here they should dry in short order.
Should 24 hrs be long enough before proceeding?
-
With any and every glue, you ALWAYS want to put a medium coat of glue on both surfaces.
How exactly did you clamp the glue-up? I'm a bit confused by the sentence: "Once clamped in I placed them all out back on the workbench. I wrapped the bamboo backed limbs with bandage and clamps on both ends."
You didn't "clamp" with bandages only, I hope? Did you use something elastic to wrap around? Did you use a form?
-
On the billets I used 3 c clamps with moderately heavy pressure over the 4" handle splice area.
I wrapped the limbs tightly wound with Ace bandage full length, c clamps on the both ends and 6 spring clamps spaced evenly full length over the bandage wrap.
I didn't have a form to utilize and the BBO is one that failed due to the original bamboo backing splitting. I'm trying to salvage it.
-
Not enough clamps on the BBO Fred. You would have done better with a tight inner tube strip wrap instead of the ace bandage. Maybe everything will come out OK but I suspect you will have some voids in your glue line.
-
Eric, I knew about the inner tube wrap but didn't have any. As usual got a little impatient and rushed things. Hopefully I tugged tight enough and will get away with it. If not I'll mark it down as lesson learned. I read somewhere about someone using saran wrap and maybe should have stretched that tight instead of the bandage.
-
go to bowyersedge.com and read Dean's article "Thinking glue" You'll find many answers there. Oh, and always wet to wet, enough to get some squeeze out.