How to: https://www.youtube.com/watch?v=s7_z-SGxUAs
https://diamach.com.au/guide-to-splitting-stone-using-wedges-and-shims-plugs-and-feathers/
Similar to these: https://www.amazon.com.au/Packs-Heavy-Feather-Concrete-Splitter/dp/B07F7Y1T5X
How to: https://www.youtube.com/watch?v=s7_z-SGxUAs
https://diamach.com.au/guide-to-splitting-stone-using-wedges-and-shims-plugs-and-feathers/
Similar to these: https://www.amazon.com.au/Packs-Heavy-Feather-Concrete-Splitter/dp/B07F7Y1T5X