One of his more interesting builds is his series on building rocket engines out of PVC pipe written in conjunction with [Chuck Knight]. For the propellent grains, the PVC rocket didn’t use the ...

For a casing they’re using PVC pipe, and forming a cone to focus the thrust by using a what amounts to plumber’s epoxy putty. The capping agent for the finished motor is ground up kitty litter.

Authorities removed a suspected homemade pipe bomb from a mobile home park in Butler County on Wednesday, according to a spokesperson with the Butler County Sheriff’s Office. The spokesperson ...