Trialled X-20A today, and it gave a bond after five seconds. Without it, the same materials bonded in about thirty seconds. I tried ABS plastic rod, styrene rod, and wood strip onto both plasticard and foam board. All stuck end on and were able to be left to fully cure without support after five seconds.
The technique used was to add a small drop of CA onto the main piece, then dip the rod/strip in X-20 and shake off the excess. Once the parts are introduced together the bond happened without further assistance.
This will not be as fast as commercial accelerators, but it seems to be a usefuel tool for the armoury......
The science bit....as far as I understand it, haven’t done much real chemistry since I got my degree twenty five years ago LOL....
X-20A is an alcohol solution so is weakly basic. CA polymerases badly in the presence of acid, but needs moisture. A basic (alkaline) solution is useful because the alcohol neutralises any acid species present and the moisture in the solution then starts the polymer reaction. The more basic the accelerant the faster the polymerisation.