Review on ILOVETOOL 2 5Mm Diamond Jewelry Making by Devin Maselli

I enjoy cutting as a hobby & sometimes I have to drill a small hole in the stone I cut. That's what I need and they have a medium grit (150) diamond coating on the end at about 1cm. Great value here at 20 per pack; Figure 1. Figures 2 and 3 show ends with small indentations in the center of the end that should improve drilling as the outer rim wears. They make a hole with a fairly large diameter, just over 2.5mm; but for some purposes i need this, like a ball. All diamond tips MUST be used with water to lubricate the tip. This removes the grinding and reduces tool wear. I've found that using non-hardening Plumber's Putty to create a dam around a drillable rock surface works well when I can't direct a steady stream of water at the rock or drill into a shallow container underwater. ALSO, you NEED to know that this slowly "grinds" the glass or stone slab and does not "cut" like a jagged burr on wood or metal. With this tool, diamond grit is applied outwards in a thin layer; much more expensive versions use a thicker layer of sintered diamond. Excessive pressure will damage and render your diamond drill bit unusable - slow and intermittent light up and down pressure will allow water to enter the hole and carry away the cutting debris. Remember to protect your hands and eyes as broken glass and stones can seriously injure you. I drill extra slowly when approaching the breakout point to avoid chipping the stone; Every once in a while I can flip the part to be drilled and work from the back to hit the hole I started if I can line it up correctly. They are effective and of great value.