Hi fellow rocketnutz,
Something I've been doing for years...I heard it on Rocketry Online or some such...is to make a mix of epoxy and hardener, don gloves, and sand the parts to be bonded with sandpaper wetted with the mix. I don't see any downside. Sandpaper grit is either aluminum oxide or silicon carbide; loose material from wood is wood flour, and from composites it's either tiny bits of glass or of polymer. All of those are fillers used for epoxy anyway. Sanding while wetted with the mix pretty much guarantees that no significant amount of moisture can get to the bonded area before bonding.
Anyone else does this? Can anyone speak authoritatively? Pedantically? Any comments? Physical threats?
Best -- Terry
Something I've been doing for years...I heard it on Rocketry Online or some such...is to make a mix of epoxy and hardener, don gloves, and sand the parts to be bonded with sandpaper wetted with the mix. I don't see any downside. Sandpaper grit is either aluminum oxide or silicon carbide; loose material from wood is wood flour, and from composites it's either tiny bits of glass or of polymer. All of those are fillers used for epoxy anyway. Sanding while wetted with the mix pretty much guarantees that no significant amount of moisture can get to the bonded area before bonding.
Anyone else does this? Can anyone speak authoritatively? Pedantically? Any comments? Physical threats?
Best -- Terry