Do you really need 40 kg of potassium nitrate for your hobbyist fireworks though? That amount can blow up a house. Also if you absolutely can't live without th

Do you really need 40 kg of potassium nitrate for your hobbyist fireworks though? That amount can blow up a house. Also if you absolutely can't live without the immature thrill of mixing explosives with your bare hands, at least don't do it in a residential neighborhood.