Selecting the proper location to drill hole for rock splitter:
When drilling, visuallize future breaking. Always drill more or less perpendicular to largest even area parallel to possible strata in rock.
Splitting is very inefficient when drilled hole is placed in the wrong position(Fig.#1) First, the drilled hole is not perpendicular to the surface; and in addition, it is off center. When plug is extended. the weak side will peel off and only a small piece will break off. This type of hole placed on the side, will restrict the movement of the splitter causing the plug and feathers to bend. It is important that the tool move freely while the power is applied.