Alpha Drill Bit Guide / Water Delivery System

I used this with with the diamond hole drills from this same website. Although the suction cups do not provide enough support I improvised by taping this unit above the hole to be drilled using wide masking tape. I then used a thick steel flat washer centered over the marked hole location with masking tape around the washer perimeter. This gave me the accuracy I needed to get the hole in the exact location. Be sure to get the washer ID located concentric with the marked location. The water then dripped over the diamond drill giving me the lubrication required allowing me two free hands to keep the drill centered. The unit has an on/off switch which is useful. Use a washer that is just slightly larger than the drill diameter. Worked perfect every time and gives long diamond drill life.

Great. concept. I could NOT get the suction cups to adhere to my porcelain tile. I had to use several strips of masking tape to hold it to my tile wall. That didn't hold well, either.