![]() Grain in granite? I know the old timer experts can do it but I sure can't find grain. Now I have to dig deeper and drill more holes to have the "mass" to get a good split. This stone keeps crumbling like it's a piece of corn bread. For example, I have a troublesome rock now that is in the ground and I am trying to split off the top. This reduces the chance that a thinner side will just chip off which requires drilling another set of holes. Try to drill a line of holes with approximately equal mass on each side of the line. When you hear it talking, you're getting close. Listen closely, most of the time the stone will "talk" to you and you can hear the cracking (especially when you're waiting between sequences). I read that the blows from the hammer transmit into the rock but it is not instantaneous (hard concept to grasp at first but the experts say to wait between sequences). Listen closely to the sounds- wedges have a tinny ring at first, then they give off a dull thud when the stone is starting to yield.Īgain, hit the wedges in sequence then wait a minute before hitting again. Go in sequence 3 raps per wedge and then wait a minute and start the sequence again. You do not have to slam the wedges in with a big hammer, I just use a 16 ounce rock hammer. The secret is to drill along a fairly straight line, round or square stones don't matter. I have been drilling and splitting boulders on my property for 3 years now, off and on. I did buy a set of 3 drill from Harbor Freight- drilled 3 holes and the shaft snapped- buried it in the hole. Only the 4x carbide bits work, the 2x are a waste of effort and money. ![]() I buy the larger sizes in Bosch through Amazon, the 5/8 I buy from Amazon too and they're made by Dewalt. ![]() I just use the 5/8 set for secondary splits of the smaller stone. 3/4 drills and wedges are a pretty good all around set but I use 1 inch quite a bit too. You can buy their goods on Amazon too if you do business with Amazon. Real good service, tool quality and informative web site. Trow & Holden in Vermont is my source for all rock splitting needs including chisels (did not buy my Bosch hammer drill there though). I bought a lot of feathers and wedges, 5/8, 3/4, and 1 inch that correspond to the respective drill sizes.
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