Have I ever mentioned how much I love small physics demonstrators

[gigabecquerel@chaos.social]

Have I ever mentioned how much I love small physics demonstrators?
We had a chunky, thrown together version of this yesterday, but then it exploded when we filled it with gasoline and oxygen.
Some days ago I happened upon a good amount of acrylic, so I just had to build a smaller version of it!
Takes quite a whack, but then it ignites pretty much everything you throw in there