


What are the best methods to fix fins on a model rocket body tube?
I'm building a mid-power rocket and I'm trying to figure out the best way to mount my trapezoidal fins on the body tube
From my research I know the main options are surface bonding with epoxy fillets, tab-and-slot through-the-wall bonded to an internal centering ring, or a fin can sleeve. My current lean is TTW with a centering ring since it seems like the most solid option for a first serious build, but I'm honestly not 100% sure.
I also wanted to ask — is it viable to use screws or bolts to mechanically fasten the fins? Like, drilling through the fin and the tube wall and bolting into an internal plate or ring? I've seen some people mention it for larger/reusable builds but I can't find much detail on whether it's practical at mid-power scale, what hardware to use, or whether you'd still need epoxy on top of it anyway.