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EdgeTune™ Pro Instructions

  Edge Tuning Basics   Tool Set Up   Side Edge Grinding   Grinding Tips   Hollow Ground Radius Edges

Edge Tuning Basics

Modern shape skis and snowboard edges need to be sharp and "tuned" for optimum performance. EdgeTune™ Pro makes this quick and easy in just a few steps:

1. Determine the side edge bevel angle. Manufacturer specs are typically 1° to 3°. (Most recreational skiers/riders use a 1° side bevel angle and racers 2-3°, which provides more grip).

2. Sharpen the side edges based on condition and use. For racers, typically before every race. For serious recreational skiers/riders, once every 3-5 outings (more often on hard packed snow & ice). Flat base grinds should last a season unless damage occurs. Touch up base edges with a hand stone.

3. Polish and de-burr the edges with the gummi stone. Simply rub the stone tip to tail along the base edge, holding the stone flat.

4. Wax the base and side edges. For recreational use, the universal fluorinated Glide Wax works well.

Tool Set Up

The EdgeTune Pro guide bracket fits Dremel MultiPro (Craftsman) and Black & Decker RTX rotary tools. See Figure 1 below.

1. Unscrew the plastic nut on the end of the rotary tool.

2. Insert a ceramic grinding stone all the way into the rotary tool (1/8" collet). Put on safety glasses! Turn on rotary tool and dress the ceramic stone with the grey dressing stone.

3. Screw on the guide bracket approx. 2 turns. Place the tool on the side edge. Screw/unscrew the adjusters slightly, so the ceramic stone just contacts with the edge square. Tighten the rear adjuster ½ turn, and then loosen the front adjuster slightly (with thumb and forefinger) for a precise grind depth. This tilts the tool for a leading edge grind.

4. The guide bracket comes pre-assembled with a 1° bevel angle, comprising a ½° brass strip and a ½° adhesive glide strip. Add more glide strips as required (2 strips equals 1°). Use additional brass base strips to store different bevel angles.

EdgeTune Pro Figure 1     EdgeTune Pro Figure 2

Side Edge Grinding

EdgeTune Pro will provide the best results with a flat base and a smooth sidewall (320 grit sandpaper). See Figure 2 above.

1. Clamp or secure the ski/board. Any movement could cause an uneven edge. Practice will help.

2. For skis, install ski brake holders by slipping the bands over the ends of the brake levers and across the top of the binding.

3. For adjustable speed rotary tools, 30-35,000 RPM works best.

4. Put on safety glasses!

5. Turn on the rotary tool. Place the bracket flat against the ski/board base and apply slight downward pressure to lightly engage the ceramic stone against the side edge. Adjust front screw grind height with thumb and forefinger.

6. Slowly guide the tool down the length of the ski/board in the direction of the bracket label arrow. Keep the tool vertical and use a steady hand motion. Let the tool do the work; do not use force. 1 to 2 passes are generally all that are required. More passes will wear down edges faster. Use the marking pen to highlight full edge grinding clean-up.

7. Finish by polishing all edge surfaces with the gummi stone.

Grinding Tips

1. Side edge grinding will sharpen the entire edge. Base edge grinds should be minimized, as this can affect the overall ski/board base flatness.

2. Dress the ceramic stone top surface when there is excessive build-up (typically after 5-10 grinds). Kiss the top leading edge for a smoother grind.

3. The marking pen will also show changes in bevel angle. For example, if the side edge bevel was 1° and the tool was set at 2°, the 1st pass will leave a line of marking pen approx. half the edge width, indicating another pass is required to achieve full edge clean-up.

4. Racers - for outstanding edge surface polish, try placing a dab of valve grinding compound on the top of the ceramic stone.

Grind Like A Pro - Hollow Ground Radius Edges

The optional hollow grind feature allows the ski/board side edge to be ground with a slight radius (hollow) similar to ice skates, knives and other very sharp edges. Figure 3 shows a standard edge cross section with today's 3° side bevel angle shown (not to scale). Figure 4 shows that same 3° side bevel angle with a new 1½ inch radius EdgeTune Pro hollow grind (not to scale).

EdgeTune Pro Figure 3 EdgeTune Pro Figure 4 EdgeTune Pro Figure 5

Benefits Of A Hollow Ground Edge

1. The sharpest edge possible due to the acute geometry.

2. Point contact for greater carving control (like ice skates).

3. Fastest edge due to reduced contact area, plus a hollow which traps ice, turning it to water to lubricate the side (like Olympic speed skaters).

4. Easiest edge to re-sharpen. Figure 5 shows a hollow ground chisel that has been honed numerous times, showing the reduced area required to re-sharpen.

High end racers and World Cup tuners take advantage of the hollow by sharpening only with a wet stone hone, without the need to re-sharpen the entire side as in Figure 1. This saves precious edge material, and produces a razor sharp edge quickly and easily every time!

Tool set up: simply tighten the rear adjuster screw and loosen the from screw for tilt.