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Takedown Sleeve Question

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Will B:
I’ve made a half dozen takedown selfbows using the steel sleeve with one and/or two brass sleeve(s).

My question is:

Do I need a thin gasket material between the two limbs?  On my past builds I have placed a thin piece of rubber between the limbs. The bow I’m currently working on has a nice fit without it so I’m not sure if it’s needed or not?? 
Thanks for your thoughts.
Will

Hamish:

I wouldn't have thought it was necessary for the sleeves to have gasket. Unless the gasket is helping fix an issue like a shim to get proper, consistent seating depth when assembled, then I wouldn't bother.

None of the sleeve set ups I have seen in assembled bows have a gasket, though I have heard of people doing it.

Pat B:
I doubt a gasket would have any affect on the bow. The strains in the bow from brace to full draw to release are a
lateral, front to back, side to side and unless the butt ends make a noise during the draw or release it shouldn't be necessary.
Take this from someone that has made only a couple of sleeve type takedowns. 

bownarra:
Doesn't matter. In fact it would be better without one :)

lleroy:
It could be that you need one between the brass and the iron one.
(Like you need a non-conducting separator when you connect a copper pipe to a steel pipe)
IIRC, there is some chemistry going on between the copper (in the brass) and the iron (in the steel)

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