Yeah that's why I mentioned ventilation. I find drilling leaves sharp edges and can sometimes tear the deli cup esp. if it's cold. Sometimes the bits don't go through too easily either and you need some solid backing to hold the deli cup against. Dremels are light but most people don't have them and a drill gets heavy pretty quickly (again many don't have a drill and bits).A hot nail or soldering gun is like a knife through warm butter. If you're doing a few it doesn't really matter which method you use but when I'm doing dozens at a time I prefer the soldering gun method.Fumes can be nasty....a low end dremmel works great though.
You can buy something called a soldering gun..hi can any one suggest a easy or Quick way to punch holes in plastic tanks ect as i am finding it to be a pain in the neck -- thanks if you can help in any way as i am crap at d.i.y. --- phil