YaeTek7 PCS 9/16 Plug Wedge Feather Shims Concrete Marble Granite Rock Stone Splitting Hand Tools

Use las cuñas para quebrar piedras y me funciono muy bien estoy satisfecho con la compla . se los recomiendo. solo ay que tener un buen taldro para perforar la piedra y luego las cuñas asen el resto, las parten muy facil es increible. piedras como de 1.5 mts de diametro x .70 cmt de espesor son las que quebre con las cuñas.exelente producto

Works well!!! Really great to tool to own!

These wedges worked beautifully. Make sure you drill the holes deep enough. I made the mistake of only drilling them about 3in the first time to allow the wedges to fit...didn't work. You need to drill about 5in deep holes to allow for the wedge to be hammered down past the wedges, otherwise the wedge will hit the bottom of the hole and not work properly. Once I figured this out the rock split effortlessly. The steel was strong and did not bend, the bands held up find, remember, your not beating on these, just tapping one at a time. Very important to spread out your hammer taps evenly among the wedges and the boulder will just split. Wonderful product!

These things worked perfectly.Some things to remember when doing this:1) a 9/16” x 8” drill bit minimum - 1/2” will not work. When they say 9/16, they mean 9/162) Patience is key, take your time, keep a small bucket of water and cool down your bit(s) between holes. It helps them to last longer3) A 14 or 12 gauge extension cord helps keep your drill motor from burning out4) The shims should be parallel to the direction you want the crack5) Oiling down your wedges and shims maintains long term use

While I never split or seen 1st hand splitting rocks before, it works. The hardest part of the job is drilling the holes. With a little trial & error, What worked for me was drill holes (3"-4" OC) with Bosch (HC5020) 5/8" SDS MAX Drill Bits (or Milwaukee) to a depth of 4" (min) using in a DeWalt Combo Hammer Drill using 50-ft 12AWG Ext. Cord w GFI outlet. To cool, lubricate & help clear (and extend service life of) the drill bit, used a garden hose with a little water very slowly trickling into/towards the dill hole. While drilling periodically, pulled to drill bit clear hole/bit & allow new clean water into drill hole. Note: the 5/8" bit has 2 carbide blades in the tip forming an X, while the 9/16" or smaller bits have only a single carbide tip which appears to make them wear out sooner. Also a 5/8" drill allow the wedge & feathers to seat deeper in the hole which appears to put the splitting force deeper within the rock (i.e. more effective). If the hole is less than 4" deep the main wedge appears to hit the bottom of the hole before full feather wedges can take effect. Overall, works well as these plug & feather wedge split well in excess of 2,000 lbs (ton) of rocks & small boulders.