Bonding a picatinny rail to an action

[Veloci_Wrench]

Just reading through this. I’ve never epoxied a rail to a receiver. I see one person noted doing like bedding an action, which makes sense to me, given that it allows the rail to removed easily. However, I’m thinking the shear strength of the epoxy is what actually desired here as to not “only” rely on the screws securing the base to the action.

Is that the case, or is using a release agent on the receiver going to give the same added strength?


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There is no added strength if you use a release agent. The goal is to bond the rail to the action, in order to decrease the likelihood of losing scope zero.

The only benefit derived from using a release agent is that you effectively glass bed your rail/action joint, which eliminates flex potential from unevenly machined surfaces ( i.e. it keeps everything level and square so that your scope tube is not torqued, bent, or put under tension when installed).

If you bond your rail the right way, you achieve both a "bedding" and a bonding.

 

[onlybrowning]

There is no added strength if you use a release agent. The goal is to bond the rail to the action, in order to decrease the likelihood of losing scope zero.

The only benefit derived from using a release agent is that you effectively glass bed your rail/action joint, which eliminates flex potential from unevenly machined surfaces ( i.e. it keeps everything level and square so that your scope tube is not torqued, bent, or put under tension when installed).

If you bond your rail the right way, you achieve both a "bedding" and a bonding.

Thanks! Makes sense to me. I’m not sure I’m ready to commit lol.


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[rbutcher1234]

It all comes off with heat if you use loctite 380, it’s not permanent.

 

[Schutzprecision]

I’ve always bedded my bases to receiver with Devcon 10110 but after reading this thread and forms drop test I want bond them as well. Most of my receivers are nitrided or cerakoted. Anyone know if loktite 380 will bond to these surfaces?

 

[RockAndSage]

I’ve always bedded my bases to receiver with Devcon 10110 but after reading this thread and forms drop test I want bond them as well. Most of my receivers are nitrided or cerakoted. Anyone know if loktite 380 will bond to these surfaces?

Part of the intent behind the engineering of cerakote is for it to be lubricious, which I believe is the ceramic portion of the formula. It's slick, and for bonding would definitely benefit from at least roughing up the surface. But after having at least one bonded base pop loose on me, I'd strongly consider going right down to the substrate.

I don't have those concerns with nitriding.