CWOVRS RX-008 Knife Sharpening Kit User Manual
- June 14, 2024
- CWOVRS
Table of Contents
CWOVRS RX-008 Knife Sharpening Kit
INSTRUCTIONS
SETUP KNIFE SHARPENER
- Step 1: Tighten the screw below of the sharpener and fix it on the desktop, as shown in Picture 1
- Step 2: Fix and rotate the stainless-steel vertical axis into the main body, and tighten the nut, as shown in Picture 2
- Step 3: Insert the hole of the rectangular squares into the vertical axis, and tighten the side screws, as shown in picture 3
- Step 4: Rotate the small stainless-steel shaft into the fixed frame of the sharpening stone, and tighten the nut, as shown in Picture 4
- Step 5: Press the small square on the spring to install the whetstone. loosen the spring to fix the whetstone as shown in pictures 5 6
- Step 6: Adjust the sharpening angle as shown in picture 8, adjust the angle between the sharpening stone and the knife by adjusting the height of the vertical axis rectangular block. The angle between the main body of the sharpener and the table top is 15°. For users who do not have precise requirements on the sharpening angle, please adjust the sharpening stone to a horizontal state, then you can get a 15° sharpening angle. For users who have precise angle requirements or other angles. please use an inclinometer to measure specific degrees according to your needs.
- Step 7: Put the knife into the clamping position of the knife sharpener, press the black quick-handle below, then the knife will be clamped, as shown in picture 9. According to the thickness of different knives, you can adjust the tightness of the clamping by rotating the black quick-handle, counterclockwise to tighten. clockwise to loosen
Installation completed as below:
START SHARPENING BY FOLLOWING STEPS BELOW
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CHECK: Re-check your setup of the knife sharpener.
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Angle Adjustment:
a) Use a protractor app on a smartphone (if it’s an iPhone, APP: Measure- Level) to measure the angle of the FLAT surface of the knife blade. Add (or subtract, depending on the measure) the desired bevel angle to this angle to get the angle the stone needs.
b) Insert the stone holder rod into the ball joint and adjust the thumb screw to move the stone to the proper angle.
c) Measure the stone and knife angles again and re-calculate or adjust as necessary. -
Choose the appropriate stone from the kit: Coarse (LOW Grit) or Fine (High Grit), Difference Usage – Coarse grinding can be used to repair serious passivated blade, while fine grinding can be used to edge, consolidate the blade, and daily sharpening; Start with the coarsest (lowest Grit) stone, and then to higher ones.
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Steps to use the stones before and during sharpening work:
a) Wet the stone with water. soak it for 5-10 mins before use, and lubricate with water or honing oil as needed. You can soak all of them in one time to save time, and wipe off the extra water before using it. No need to wet diamond stones. b). Insert the stone into the holder.
c). Draw the stone diagonally along the blade tip to handle or handle to tip, towards the spine. Use LIGHT pressure, not much more than the weight of the stone. Slowly and smoothly. -
Repeat 4.c) for about 10 strokes and WIPE THE BLADE with a clean, soft cloth.
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Sharpen the other side of the blade by Flip the knife: Remember to re-measure and adjust the angle. Then Repeat 4.c) -5 on sides of the blade. (If the angle changes while flip, please refer to more details on FAQ part.)
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If the edge is about to be completed, repeat 4.c) with 5 strokes on each side this time.
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Change Stones: pass to the next finer stone. (Higher Grit)
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Repeat steps 4.c)-7 till you’ve done this all with your finest stone.
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Leather strop used: (NOTE: If it is not included in the offer you’ve chosen, please skip Step 10).
a). Check and adjust the angle as needed.
b). Strop the edge from tip to handle or handle to tip but diagonally AWAY from the spine this time.
c). Strop for 3-5 strokes on each side. Remember to re-measure and adjust your angle whenever you flip the knife. -
Wipe the knife clean.
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Maintain and store stones after use: Rinse the stones. Rub the used side with a finger or soft brush to loosen the metal filings. Dry the stones with a clean towel and let them air dry the rest of the way before storing them.
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Disassemble the knife sharpener and store everything back in the box.
TIPS ON OPERATING
- Wipe off excess water after wet the stones to prevent water fall off from STONE ARM to PIVOT.
- Place the blade on the BLADE TABLE with the knife handle against the machine and the edge parallel to the front of the GUIDE
- Place the STONE on the edge of the knife. Pull the knob all the way toward you, and slide the STONE over to the HEEL of the blade.
- The Stroke: Push the STONE ARM forward and at the same time let it slide to the opposite side of the BLADE TABLE (diagonal motion). PULL the STONE ARM back to the starting position along the same path. Apply just enough pressure to get the stone to cut. Most of the sharpening is done on the push stroke. Don’t pick the STONE up on the pull stroke, just let it slide on the edge. Make smooth, long, slow strokes so you just bump the stops gently. Hold the KNOB loose in your hand so it is free to follow the shape of the knife blade. Let the STONE slide from side to side in a straight line. Do not move in circles, as it will concentrate all the sharpening in only one area of the edge.
- Go slowly. The STONES cut faster and are easier to control when they are moving slowly. If you go fast, they just slide over the blade and do not cut.
- Clean the STONE and wipe the knife blade off – (move the STONE ARM to the side, so the water run away from the PIVOT) Put just enough water on the STONE to cover the surface. This will float the metal and grit away from the surface. Then wipe the STONE off with a damp terry cloth/rag.
TIPS ON JUDGING WHETHER THE SHARPENING IS COMPLETED
- Bring the edge to a BURR. Continue making equal passes down each side of the blade. When the two sharpening cuts come together at the edge, the metal breaks down and forms a BURR. which can be felt by drawing your thumb across and away from the edge on the opposite side of the last pass.
- Check the edge for a BURR each time you switch sides. The BURR will begin to form in some areas and not others. Concentrate your sharpening in areas with no BURR and pass lightly over the areas that have started to BURR. When you have an even BURR down both sides of the edge, switch to a liner STONE, and make a few light passes on each side of the blade.
- Remove the BURR. Wipe the stone and knife off. Make two or three passes down each side of the blade with NO PRESSURE on the STONE just the weight of the STONE ARM.DO NOT HIT THE STOP. Move the knife along quickly so the STONE only makes one light stroke in each section of the blade. Check to see that the BURR is gone. If you use too much pressure or make too many stone strokes, you will keep making new BURR
FAQ
- Q: The stone cannot be clamped tightly
A: If the lengths of the whetstone bases installed are different, the shorter whetstone will become loose. At this time, only one whetstone can be installed.
FUNCTION&USAGE OF VARIOUS SHARPENING STONES
DIAMOND STONE
Diamond stone is generally used in cemented carbide knives. With high hardness
and large grinding capacity, and no need to lubricate. Ceramic knives can also
be sharpened with diamond stones
- 120-240#: Coarse grinding, Suitable for Removing chips from a damaged blade
- 600#: Medium grinding, Smoothing a rough edge into a medium edge
- 1000-3000#: Fine grinding, Smoothing a medium edge into a sharp edge for Daily use
SILICON CARBIDE WHETSTONE
Made by sintering with silicon carbide abrasive mixed with binder. With high
hardness and grinding performance. Suitable for edge repair. Before use,
please soak them in water or lubricate them with honing oil
- 180#(60-70um): Suitable for Removing chips from a damaged blade
- 400#(35-25um): Roughly sharpening a blunt edge
- 800#(14-20um): Smoothing a rough edge into a medium edge
Alumina ceramic whetstone
The whetstone is sintered from alumina and binder, Alumina ceramics have high
mesh and hardness, which is very suitable for fine grinding of knives. Before
use, please soak them in water or lubricate them with honing oil
- 1500-3000#(2.5-7um): Smoothing a medium edge into a sharp edge for Daily use
BORON CARBIDE WHETSTONE
The whetstone is sintered from boron carbide particles and binder, which
has good stability and high hardness, and is very suitable for polishing the
knife edge. More durable and better protection for knives. Before use, please
soak them in water or lubricate them with honing oil.
- 3000#fine (1.5-2um): Preliminary polishing of the blade
- 6000#(0.5-1.0um): Polished blade to mirror effect
NATURAL WHETSTONE/WATER STONE
Cut from natural emeralds, it has a high grain size ideal for edge
polishing. Because it is a natural stone, there may be cracks in some places,
which won’t affect the use.
- 10000#(0.5-1.0um): Polished blade to mirror effect
LEATHER STROP
Made of cowhide paste, it is generally used at the end of sharpening knives.
It can remove the burr on the blade and make the edge sharper. You can also
apply polishing paste to further polish the blade.
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