It's just a hole. If you take a hot needle you can widen the hole of spray caps and increase the throughput (and size of the throw if you also increase the dist

It's just a hole. If you take a hot needle you can widen the hole of spray caps and increase the throughput (and size of the throw if you also increase the distance to the object). Another trick for spraypaint bottles is to stomp them vertically if you run out of spraypaint, it won't hurt the system that takes your cap, and gives you little bit more paint.