Document: DGP-M2 User Manual
Rev: B
02/03/2022
MOUNTING THE DGP-M2
The DGP-M2 stand alone grinder (without vacuum system and cabinet) should be mounted to a solid horizontal surface
(mounting hardware is not provided).
If mounted to a metal cabinet or pedestal, align the mounting holes with the corresponding holes in the cabinet or
pedestal. Insert a 1/4”-20 X 1 1/4’’ hex head bolt with flat washer beneath the head of the grinder. From the bottom of
the cabinet or pedestal, place a 1/4’’ flat washer and 1/4”-20 hex nut onto the bolt extension. Tighten only until the
space between the grinder base and the cabinet or pedestal is 1/8’’. Using a second nut on each bolt, tighten against the
first to prevent loosening by vibration.
If mounted to a wooden bench top, use 1/4’’ wood screws that are 1-1/4’’ long with flat washer beneath the heads.
Tighten screws until the space between the grinder base and the bench is 1/8’’.
Electrode Grinding Assembly
The Basics
The Electrode Grinding Assembly is attached to the right wheel housing (refer to Figure 1 on the next page for the
general arrangement of the assembly). It provides the means to support an electrode in a fixed position relative to the
diamond-grinding surface through an electrode guide collet that matches the electrode diameter. The electrode is
brought into gentle contact with the diamond-grinding surface and at the same time is rotated slowly in one direction
between the operator’s thumb and forefinger. As an alternative, pin vises are also provided to hold the tungsten during
rotation.
Operating Instructions
Note: all positioning and adjustment should be made before turning on the grinder.
Refer to Figure 2 on the next page for use with the following operation instructions:
1. If the tungsten you are using is already flat at the end, like new tungsten straight out of the box, proceed to Step 4.
2. Locate the Point Flat Dresser Block (DGP-PG1477) attached at the 6 o’clock position of the right side wheel cover.
Find the hole that matches the diameter of your tungsten and turn on the grinder. Slowly push the tip against the wheel
until the point is removed. Once again, be patient and do not gouge the wheel. A burr can form if too much pressure is
exerted on the tungsten.
3. Select the electrode guide collet with the hole diameter closest to the tungsten electrode diameter and position it in
the electrode guide collet tube. Notice that the collet has been beveled on a 15° angle at the front or exit end of the
collet. With this surface parallel to the grinding wheel surface, tighten the set screw to hold it in place. The back, or
entrance, end of this collet has been milled down to its center line to make it easy to insert the electrode for grinding.
4. Adjust the angular position of the electrode grinder assembly to the desired included angle of grind for the electrode
point using the angle adjustment handle (Handle A).
5. Left to right positioning: Adjust the position of the electrode grinder assembly using the horizontal adjustment knob
(Handle B) to place beveled surface of the electrode guide collet approximately 1/64” from the grinding surface.
6. Slip a tungsten electrode into and through the electrode guide collet to determine where it will contact the grinding
disk surface.
7. Up and down positioning: Adjust the electrode grinder assembly using the vertical adjustment knob (Knob C) so that
the tungsten electrode will contact the actual grinding surface.
Page 6