About the Sharpie Tungsten Electrode Grinder
One of our most popular tools for sharpening tungsten electrodes is the hand-held Sharpie Tungsten Electrode Grinder. It’s an affordable option for preparing your tungsten electrode with a precise taper with longitudinal grinds. A properly prepared electrode will deliver consistent welds, deeper penetration, and less re-work. The Sharpie also allows you to add a tip flat and cut your tungsten. This grinder is a great tool for in the welding shop or out in the field, and there are two models to choose from: the original Sharpie SD with its fixed grind angle, or the adjustable Sharpie DX. The latest addition to the Sharpie line are the cordless versions of the Sharpie tungsten grinder which offer even greater mobility. Properly maintaining your Sharpie will ensure its functionality and improve its longevity.
Maintaining your Sharpie Tungsten Electrode Grinder
To maintain your Sharpie and keep it running smooth and quiet, you will need to keep the head area free from tungsten grinding dust. We recommend blowing the dust out of the machine frequently, specifically the area below the diamond wheel. Over time, the dust can build up in that area and begin to permeate the sealed bearing that supports the wheel mandrell. Based on how much you use the machine, you may need to replace the bearing located inside the lower housing on occasion. In fact, you’ll know it’s time to replace the bearing when the motor gets loud and/or begins to vibrate. This is a relatively easy procedure* that will extend the life of your Sharpie.
Watch the video for some tips on How To replace the bearing.
*Note: the video shows a lower housing with a bearing that has been run until it disintegrated and was is in several pieces. If your bearing is in one-piece you can simply remove and replace it– if it’s in pieces, it becomes more challenging to remove as the outer race of the bearing may be locked into the lower housing. We hope the video helps
Other Maintenance Tips for your Sharpie Tungsten Grinder
Replacing the Diamond Grinding Wheel
Remember your grinding wheel is double sided (part number A-PTG-002), so flip it before you replace it! Note: the Sharpie uses an industrial grade high-quality diamond media to grind your tungsten. You should get approximately 180 grinds per side for tungsten sizes up to 3/32″ (2.4 mm), depending on how aggressively you grind (how much pressure you apply, and the size of the electrode being ground).
If you are grinding 1/8” (3.2 mm) tungsten, Arc-Zone strongly suggests using the heavy-duty Premium diamond wheel, part # A-PTG-002B. This will improve wheel life on large tungsten sizes.
Checking the Tungsten Guide Collets
Over time the stainless steel collet(s) that guide the tungsten electrode into the grinding wheel can show signs of wear. If this happens, you’ll notice play in the collet when grinding and the grind itself will become lopsided.