Profile: Holepop.com is a supplier of EDM electrodes and EDM consumable parts that are used primarily for electro discharge machining shops & small hole drilling machines. These machines have specific capability of drilling holes in any type of electrically conductive material such as metal. We offer precision brass and copper tubing. This tubing has a single hole or multi-channel (coreless) set of holes down through the entire length of the tubing for water, which is used as a coolant to keep the electrode from getting too hot, and warping or melting. This also flushes the burnt and disintegrated material out of the bottom of the hole which allows the EDM drilling to continue deeper into the work piece, also keeping the hole straight and accurate. Brass EDM tubes are used on the largest variety of electrically conductive materials and metals, to small hole drill. Multi-channel tubes are used for EDM machining a blind hole. The internal channels are designed to burn away any material left at the bottom of the hole.