I've been needing some roughing spray for quite some time now and im not sure how long penguin magic has been out of stock with it dont want to buy it elsewhere,, anyone know if they are gonna get some back in stock any time soon???

You can shoot them an email and see what they say. I heard 3M super spray 77 adhesive is good if you want to look into that.

You could send them an email or save yourself some money and just go to the hardware store and get some acrylic clear satin finish spray (I recommend Minwax) which will do the same thing.

Sent You a PM.

What people seem to forget is that you don't need "sticky" nor do you want a heavy coat as the above video illustrates. Forget spray glue, it'll just make a mess.

The end effect you're looking for is nothing more than some hard tiny droplets, which also means don't be in a hurry with the cards. Let them dry COMPLETELY. These little bumps will mesh with the little bumps on the mating card to resist slippage, which is all you really need for the trick to work.