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Figure 1: Optimal location of electrode point contact area

Electrode Grinding assembly cont'd

Left to right positioning: Adjust the position

of the electrode grinder assembly using the

horizontal adjustment know (Handle B) to place

beveled surface of the electrode guide collet

approximately 1/64" from the grinding surface.

Slip a tungsten electrode into and through the

electrode guide collet to determine where it will

contact the grinding disk surface.

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.

Remove the tungsten electrode from the electrode

guide collet.

Put the eyeshield in place and start the grinder.

Slide the tungsten electrode into and through

the electrode guide collet and twirl the electrode

(or the pin vise holding the electrode) slowly in

one direction between thumb and forefinger as it

approaches and makes contact with the grinding

surface. To retain maximum symmetry of the

point, try to keep from moving the electrode side

to side within the collet. The best technique for

this is to constantly lean the electrode against

the inside surface of the collet while turning.

Continue grinding until the desired sharpness

is obtained. Make sure to continue rotation as

the electrode is backed off from the wheel or a

spot may occur along the point. Contamination

of the wheels can occur by using the diamond

grinding and cutting wheels as all-purpose shop

wheels. If you grind tools or other metal items,

other than electrodes, there is always the risk of

contaminating the wheels.

Document: DGP-2 & DGP-2-V2 Tungsten Grinder Product User Manual | Released: 5/13, Rev. A

8 / 13

Figure 2: Electrode grinding assembly

In addition to proper positioning and avoiding

contamination, use the recommended grinding

times in Table 1 below to increase the longevity of

the diamond grinding wheels. The wheel can be

used with very limited wear by working according

to these guidelines. Wear of the wheel will double

if the grinding time is reduced by one half using

more applied force and wear will triple if the time is

reduced by one third. Be patient and do not gouge the

wheel!

For users requiring extreme tolerances, a laser cut

tip/flat gauge is available from Diamond Ground

Products to accurately measure tip diameter. See

page 13 for the part number. Also note, a microscope

or comparator can be used to verify the angle (taper)

of the grind in a very precise and efficient manner.

Electrode Diameter

(In.)

.040"

1/16"

3/32"

1/8"

5/32"

3/16"

Table 1: Recommended grinding times for each diameter.

Consult Appendix A from Illustrated Parts

brochure and optional Accessories

Page 8

Arc-Zone.com, Inc.

2091 Las Palmas Drive, Ste. F

Carlsbad, CA 92011 - Tel. 1.760.931.1500

Email: [email protected]

Electrode

Grinding

Diameter (mm)

Time

1.0mm

5-8 sec

1.6mm

11-15 sec

2.4mm

15-20 sec

3.2mm

25-35 sec

4.0mm

30-40 sec

4.8mm

55-65 sec