I've mentioned this several times in other threads and other folks have tried it and have been surprised. I thought I'd make a little thread on it so it would be (hopefully) a bit more obvious.
In the model horse hobby, we use super glue (CA glue) and baking soda all the time. Baking soda is an accelerant for super glue, you don't have to purchase anything special. Odds are it's in your kitchen or fridge right now.
Got a stubborn piece that won't stay put long enough to get green stuff on it? Or a tiny piece has broken and it's too small to pin. Super glue and baking soda will make sure it stays. Permanently!
When you add baking soda to super glue it hardens instantly so you may want to practice this a couple of times. That way you can see first hand how it's going to react.
Depending on what you're trying to glue, you can do this a couple of different ways. Apply the glue to one end and baking soda to the other piece then put the two together or apply the glue and while making sure you're fingers are well away from the area, sprinkle baking soda on the join. Whichever way you do it, make sure you have it right the first time because you won't be able to change it once you introduce the baking soda.
What happened to this dude? He's a mess! lol! Well, because holding the pieces and juggling the baking soda can be tricky, I usually end up just dumping the baking soda on. lol! First, the cotton ball is there because I have him in my little "third hand" thing to hold him steady. The alligator clips are strong enough to put a dent in the soft metal so I put the cotton ball around his foot to keep it from getting squashed.
The white stuff on his hand his Winsor & Newton Heavy Modeling Paste. I used it to create a flame around the ball he is holding. It cured beautifully but I bumped it and the stupid thing popped off. Baking soda and super glue to the rescue!
I applied glue to the ball in his hand, then put the dried modeling paste back on, then applied the baking soda.
I was also having a heck of a time with his pegasus. The glue wouldn't hold well enough for me to get apoxie on the join of the wings. Any pressure of applying the apoxie popped them off. So I glued and again dumped the baking soda on. Again, I was juggling to hold the pieces but I also splurged and spent $.99 on a box just for gluing. So if I spill it or waste it, it's no big deal.
I let it sit for a few seconds then blow off the excess baking soda.
The glue and the baking soda form a rock hard substance. You can see on the bottom of his hand, it's sloppy and you can't see detail. But a little work with a file and sanding stick and he should be just fine.
Pegasus turned out great too. The white stuff on his back is actually apoxie over the body halves not the super glue/baking soda mix. The wings turned out wonderfully and aren't going anywhere. I have more modeling paste on the base, I'm going to see how it works as water...think ocean surf.
And as an added bonus, the modeling paste works pretty nicely as flame too! (I tweaked the photos so you could better see the detail since it's all white right now.)
So there ya go! Got something that won't stay put? A gap that GS or apoxie isn't working for? Something breaks and you need to resculpt? Try the baking soda and super glue trick!