Yrs ago I watched a vid on how to use hot glue for gun muzzle flash, not so easy. I had a old sword and laid out layers of hot glue and used gravity to shape. This is difficult.
Best effect with hot glue, take a LED, say a green one and bam! Bad energon leak that glows. Think of a bot with a arm blow'in off laying in a pool of energon glowing. Hmm.
Used to use it all the time for joe customs. Keep your hot glue on low and use a fan. Testors transparent paints work great with this effect as well as Future Finish paint and ink washes.
Thank u all for compliments. Wishful thinking. A butane powered flame thrower Grimlock!!! Metal head of course. Lol u know u would be flame melting those green army dudes haha!