Sometimes I need to paint inside small areas where I can get the spray paint can tip inside where I need to paint, but not with my finger. In this case I am painting the base of my jack stand. This is what I did.

take a piece of masking take or painter tape about 18-20 inches long. Fold one end sticky side to sticky side covering all but 3 or 4 inches, like this.






Then put it over the spray nozzle on the top so the sticky part sticks on the left side of the nozzle when it is facing away from you. Next tear off another piece of tape about 2 inches long. On the piece of tape hanging off the can make a loop with about 3 inches of tape and tape it up against it's self, like this.






Now, stick your finger in the loop. This will let you spray without having to have your finger on top of the can, like this.






And this is how I am painting my jack stand base.






There are probably better ways to do this, but I needed something "now" and this is what I came up with.

 

Interesting innovation. Only thing I'd be a bit concerned about is the high volume of flow that could cause runs or drips.

 

That is an issue. In this case I uses short bursts and let the runs work to my advantage coating areas the spray wouldn't cover well. And for this I'm more concerned with getting something in there to prevent rust.

 

It's pretty heavy gauge metal. I doubt it's going to cause you any issues seeing it's survived this long. Most jacks I've known were stored in the trunk out of the elements and thusly relatively well protected.

 

It's more of a how to than what to, but I'm painting it anyway.