My Hobby Lobby has some sanding sticks that are called needle sticks I believe, they actually look like a small shapened pencil, don't recall the manufacturer's name.
Jeff, it would be better to spend a little extra money for safety sake than to risk your health or even your life on anything that is not explosion proof, PLEASE take it from someone who knows, those safety warnings are there for a reason my friend!!
WOW Ken, talking about an ambitious project, you have got one there for sure, but I believe you can pull it off just stay with it, will certainly be watching, BTW great start!!