Superglue mechanical switches to keycaps.

[mdb696969]

Couldn’t find a keyboard thread so this is the closest. So my razer blackwidow x chroma has a small problem with the spacebar when it’s pressed too many times really fast on the left side it pops out of one end. So I was thinking about superglueing the sides of the space bar to the switches or whatever supports the space bar on either side.

 

[BFG-9000]

Superglue is generally brittle and has low impact strength, especially to plastics such as polyethylene or polypropylene. Certain brands like Krazy Glue (contains a phenol) or Surehold 302/308 (contains benzene) have solvents to help etch plastics to improve mechanical adhesion, but with unknown plastics YMMV. It's also not suitable for filling gaps, although baking soda may be added to do so.

Epoxy is also brittle but fills gaps well. Note that one of the two parts is nearly entirely Bisphenol-A

Polyurethane glues like Gorilla Glue, Elmer's Glue-All Max, Rhino Ultra and Titebond Poly are also brittle to impacts but much stronger to bending. They foam up and make a huge mess which is especially unfortunate because no solvent can remove it so heat and sanding are the only way. They also aren't supposed to be used between two nonporous plastic surfaces because the center will take too long to dry then. Which is funny because they always seem to dry up in the bottle, so I wonder why they don't come in metal tubes like:

Rubber cements such as E6000 with rubber suspended in a petroleum solvent carrier are quite flexible so should work, if a little stinkily. The solvent may start to melt some plastics before it dries. The same company also makes the similar Shoe Goo and gasoline resistant Seal-All

I'd probably opt for a rubbery silicone type glue like original G02 Glue or Elmer's Stix-All because while they aren't that strong, they are very flexible so hold up well to impacts. They also aren't too difficult to scrape off so if you need to redo or undo things it's possible. Think of them like much stronger and harder glue versions of silicone RTV caulk.