Years ago when I was in the business of tire repair, We used a flammable tire/tube cement.
After preparation of the surface, the cement was applied and lit on fire just long enough to burn off the lighter elements and heat up the surface, it did speed up the patching process, left too long, it could burn the cement and you didn't want that.
It was a method that worked very well once you got the hang of it.
Then, I suppose, somewhere, someone burned the garage to the ground and the cement was replaced with a nonflammable product, in the name of safety, of course.
Now I must wait an extra few minutes before applying the patch, I know, we're only talking about three or four minutes but they are my minutes and could be used for other important activities, such as reading this blog.

I am waiting for the industry to develop and introduce a nonflammable starting fluid, in the name of safety, of course.