Tri-Gemini is a master distributor for POCO graphite, Toyo Tanso graphite and Commonwealth dielectric fluids.  Our product line includes a complete line of supplies for EDM sinker machines - electrode materials - including graphite, tellurium copper, copper tungsten, tungsten carbide and tungsten wires.  We have a full machine shop set up for machining electrodes - primarily in graphite.

2008 New Facility Flyer Tri-Gemini Line Card

Graphite is divided by brand - POCO, Toyo Tanso and our house brand, MicroGraph. Tri-Gemini stocks a wide variety of tapping electrodes - orbiting and standard, inch and metric sizes and NPT taps.  Most sizes are sold in a pack of 5 pieces - and can be shipped out same day!  See the listing of available stock sizes by clicking on the Tapping Electrodes section at the bottom of the page. Rototubes are special electrodes with an off-center hole - they are found in the MicroGraph Graphite section. EDM sinker filters are shown in the EDM Filters section at the bottom of this page.