Simplify your tunnel gate EDMing process. Repeatability and accuracy are now available in this affordable process solution. This system has been developed specifically for the CNC EDMing of plastic injection mold tunnel gates.  The current systems that are now available are not made for easy angle setting or for easy tool length offset settings when using multiple tool holders. Utilize the full potential of your CNC ram EDM tool changer and save 16% on a set of 4 TGL gate chucks supplied with a tool length offset probe and a plastic storage case. The more tunnel gates you need to burn, the more this system makes sense, however if you are just setting up to burn one gate, this system still will show you it's merits. If you have a CNC EDM and are still putting in tunnel gates with the work piece sitting at an angle, it's time for you to take advantage of the system. CNC EDMing makes burning multiple locations a snap.  Now with this system your tunnel gate setups and burning will be just as easy. Manufactured in America with quality and pride. Designed by a tool shop owner who wanted to save his company EDM setup and run time.  $$$ Fast setup time for every 5 degree increment.  No indicating required. Repeatable features makes for extremely accurate tunnel gate diameters form cavity to cavity. This system allows for the quick setting of the tunnel gate inclined angle from 0 to 90 degrees in 5 degree increments with it's unique indexing system.  Notice on the CAD model below left, the 5 degree graduations and reference pin for easy angle setups.  No sine plate required to true in the inclined angle. Above, the TGL gate chuck is shown with a tool length offset probe.  The teardrop probe attachment makes it possible to set your tool length offsets so that all the holders in the group are identical.  You locate one holder to your work piece with one of the tunnel gate electrodes and all the other holders will repeat to your programmed locations and depths. The holders are designed to use 3/8 square electrode material.  You will end up grinding a group of electrodes to your desired included angle using a Harig type grinding fixture or similar.  Also, these electrodes can also be purchased from us in a variety of standard included angles.   The TGL above is shown with an optional 3R coin holder.  The image on the right shows the TGL chuck c-clamped to a rail type holder.  The shank will also mount in any EDM holder that will clamp a 1"square body. Welcome to edmchucks.com TGL products are manufactured and sold by Mier Tool Company.  See our Contact page for details. This web site is designed and maintained by Michael Montagna. Click here to go to Mier Tools web site