Do an experiment about air duster gun (3)

At this point, you should be seeing the whole air duster gun part. Pretty simple, but I am long winded and must overly explain everything. So we have the Gun finished now, but we have no projectile. What are we going to do? Calm down, i have this under control.

After years [and by years i men about 2 min] of R&D; I discovered that your average eraser from an el cheapo [or free] wooden pencil works very well. If its too small, try a different eraser, there are 2 normal sizes and the biggest one works the best.

I have found that using some oil [i use reel oil, but 3 in 1 oil or similar will work] helps out a lot with getting a snug but not too snug fit with the eraser. If the eraser fits too snugly, the whole barrel will go flying, which is pretty cool, but not as fast. If you shove the eraser down too far, you can use the straw to push it back out to a good firing fit.

In my tests, my basement is a little over 100ft long and it goes all the way to the other side without too much arc. Be carefull when shooting, it can sting, and possibly maim, so use common sense and if you lack this, do not make my project. ENJOY!