Hi Peter,

I saw a post of yours the other day, re:- attaching scopes with epoxy resins/Bonding agents, I think it was regarding a WW1 smle re-pop. Just to let you know, the fellow who argued that they assemble planes like that these days, which is true! However, a lot was left out.
I did a fair amount of research and experimentation into building motorcycle front suspension systems via this method, in particular, the interface points between the Aluminium weight force transition parts, as all the fasteners have to go into metal, as carbon fibre/resin cannot do that. So everywhere and anywhere you need a screw or bolt you have to add a sufficient metal part to take the resultant stresses.
Now in this case of sticking a scope onto a receiver, theoretically it could work, but to a few things most don't know, the two surfaces of the metal must be knurled up sufficiently for the loads, an intermediary coating of a suitable inert resin must then be applied as Those types of resins which should take those loads are electrolytic, then at a suitable point in the drying o resin cycle a) you apply the second resin b). With this, all done correctly a bond of incredible strength is achieved. This is fine where I'm inserting a dumb piece of aluminum and machining to suit after, or in the aircraft industry where they have experimented sufficiently to prefab wing sections appropriately. To your point, it isn't suitable at present, because how would you do all this and maintain the tolerances you require to mount a scope, for the now, that would be the issue I think.
I can see a point soon where it will be done especially as we move towards more plastic and aluminum parts in Gun manufacturing. Not on steel to steel through, the old tried and true method is still best, with the solder acting as the buffer between the two surfaces. He has no concept of the cost involved in achieving that idea either including a life or two. Interesting thought though, wrong materials, but not impossible.

Regards Ian
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