Geode cracker I made from a Ridgid 4-S pipe cutter I got on . Will crack geodes up to 5” diameter. The key is the flywheel crank for extra leverage. : r/geology

Cracking a Geode with a Soil Pipe Cutter

Crack Your Own Geode - Earth Child Provisions

Geode Cutter

Break Open 12 Geodes – Geode Kit with 12 Premium, Break Your Own Geodes Filled with Crystals, Geology Gifts, Science Toys, Earth Science Kit, Crystals for Kids, Fun Stuff for Kids

Mega Crack-Open Geode

Uses for a dug-out chunk? : r/technicalminecraft

Geode Cutter

Quickly make repeated cuts with a single stroke on soil pipe up to 6 inches. Easy to connect the chain to the pipe. Long handles and cutting mechanism provide the mechanical advantage to minimize cutting effort. Adjusting knob for quickly adjusting the handles to the optimal cutting angle.

Ridgid 59698 286 Soil Pipe Cutter

Geode Cracker? : r/Tools

Geode Cutter

Crack Your Own Geode - Earth Child Provisions

Geode Cutter