Gritomatic HAPSTONE-V5-BBS Instructions de montage

1. TECHNICAL SPECIFICATIONS AND FEATURES

Dimensions and weight:

Knife sharpener dimensions (ready to work) 64х16х21 cm (25”x 6 ¼”x 8 ¼”)

Shipping dimensions 38x28x7 cm (15”x 11”x 2 ¾”)

Horizontal shaft 64 cm (25”)

Knife sharpener weight 3.2 kg (7 lbs)

Features of the HAPSTONE PRO knife sharpener:

All parts are made of metal and covered with powder coating which provides

excellent coverage and excellent resistance to physical damage.

The universal stone holder is made of aluminum, which is suitable for the installation

of sharpening stones ranging from 10 to 20 cm (from 4” to 8”) in length. The stone

holder is designed so that forms with bevels at 45 degrees and 90 degrees can be

inserted.

Angle indicator marks are on the pivot rod (at 15, 18, 20, 25 and 30 degrees).

The set includes a thickness compensator which allows the use of sharpening stones

of different thickness while maintaining the chosen sharpening angle.

The blade table is covered with rubber.

The neodymium magnet is installed to facilitate knife fastening and the sharpening

process.

The knife sharpener is supplied with an aluminum guide which can be used as a

holding strap to help fasten knives more securely.

HAPSTONE PRO is vibration resistant due to rubber tips on the supporting legs.

Bundles and optional accessories are available.

2. STANDARD CONFIGURATION

HAPSTONE PRO knife sharpener 1 pc.

Black marker 1 pc.

Thickness compensator 1 pc.

Hex key 1 pc.

Wrench 1 pc.

Brunox oil 10 ml (0.3 oz) bottle 1 pc.

Manual 1 pc.

Carton box 1 pc.

3. SETUP INSTRUCTIONS

3.1. Attach the T-shaped supporting

leg to the base of the knife sharpener

so it is parallel to the back supporting

leg. At the front side of the base, the T-

shaped supporting leg should be

secured with the hex key that comes

with the kit.

3.2. On the back side of the base, the

pivot rod should be installed. It should

be screwed in clockwise and securely

attached to the lower part of the guide

with a wrench (included in the kit)

setting it into the one-sided groove.

The knife sharpener is supplied with a

screw nut to secure the pivot rod

underneath. After that install the

thickness compensator and fix it with

the thumb screw, as shown in the

figure.

3.3. Twist together the two parts of the horizontal shaft by hand. The stone holder is

already installed on one of them. Then, holding the handle on one side, tighten the other

side with a wrench.

3.4. The pivot unit should be

put on the pivot rod and the

horizontal shaft.

Note. As a safety feature, the

horizontal shaft has two

bronze rings, which serve to

limit the travel of the shaft.

They need to be fixed with

the hex key that comes with

the kit.

4. PRE-OPERATION INSTRUCTIONS

4.1 Setting the sharpening angle

Before sharpening a knife, it is the necessary to choose the sharpening angle. The

sharpening angle chosen depends on the type of knife steel or purpose for which the knife

is to be used. The smaller the sharpening angle, the thinner the cutting edge on the knife

and, consequently, the sharper the blade that is obtained. But it should be remembered

that sharp blades are easier to damage when used, especially if hard surfaces are cut. Thus,

you have to find an optimum angle that makes the knife sharp enough for your needs, but

not too easily damaged. Recommendations for the choice of sharpening angle (in

accordance with the type of the knife) are given in the chart below:

Type and purpose of the knife

Sharpening angle

Razors, scalpels

From 10 to 15 degrees

Knives for vegetables, bread, filleting

From 15 to 20 degrees

Professional kitchen knives of different types

From 20 to 25 degrees

Hunting knives and all-purposes knives

From 25 to 30 degrees

Dagger type knives, axes

From 30 to 40 degrees

Note: When you read about knife sharpening, you may come across the term “full

sharpening angle.” This means the sum of the two angles used to sharpen both sides of a

blade (e.g. 15 one side + 15 the other side = 30 full sharpening angle). As a result, when

using the HAPSTONE PRO, you need to divide the value of the full angle by 2 to get the

value of the angle you need to set on the HAPSTONE PRO.

You’ll see angle color marks for knife sharpening (at 15, 18, 20, 25 and 30 degrees) on the

pivot rod of the HAPSTONE PRO knife sharpener. On the lower part of the pivot rod, there is

a mark with the smallest angle value, on the upper part, the largest. If you need other

angles, you can use the chart given below. The distance (in mm) between the base and

upper part of the thickness compensator is shown.

Degrees

Height, mm

Degrees

Height, mm

Degrees

Height, mm

10°

51 mm

20°

106 mm

30°

168 mm

11°

56 mm

21°

112 mm

31°

175 mm

12°

62 mm

22°

118 mm

32°

182 mm

13°

67 mm

23°

123 mm

33°

189 mm

14°

73 mm

24°

130 mm

34°

196 mm

15°

78 mm

25°

136 mm

35°

204 mm

16°

83 mm

26°

142 mm

17°

89 mm

27°

148 mm

18°

94 mm

28°

155 mm

19°

100 mm

29°

161 mm

Note. The actual sharpening angle also depends on the thickness of the knife spine. The

thicker the knife spine is, the less the actual angle is. For example, if the knife thickness is 3

mm, the knife sharpening half angle is reduced by about 2 degrees. Keep this in mind when

sharpening.

4.2. Using the thickness compensator

Because the sharpening stones vary in size and thickness, the sharpening angle varies as

well. The thicker the sharpening stone is, the smaller the sharpening angle you get. The

thickness compensator helps to keep sharpening angle the same.

After choosing a sharpening angle, lift the thickness compensator on the pivot rod up to the

necessary angle indicator mark. The upper side of the thickness compensator should be on

the level of the chosen angle indicator mark. Next, fasten the compensator on the pivot rod

with the thumb screw. When setting the angle of sharpening, the thickness of the

sharpening stone should be taken into consideration. To do this, before setting the

sharpening stone, put it with its horizontal surface down onto the surface of the thickness

compensator. Lower the pivot to securely fasten the sharpening stone between the

thickness compensator and pivot.

After you clamp the pivot with the thumb screw, the

sharpening stone can be removed. The distance you

get between the thickness compensator and the

pivot is to compensate for the variance in

sharpening angle created by the sharpening stone.

Now, the sharpening angle is set with the utmost

precision.

4.3. Attaching the sharpening stone

The sharpening stone should be fastened on the horizontal

shaft in the stone holder. Because sharpening stones can

be of different lengths, the clamp with the fixing screw is

movable. It moves along the entire length of the horizontal

shaft and this allows a sharpening stone of any length to be

attached.

With two fingers press the nearest side of the stone holder

through the spring and get it as close as you can to the

wooden handle. Put the sharpening stone into the stone

holder and fasten it with the thumb screw.

Note: When changing sharpening stones of different thicknesses, control the angle of

sharpening of the knife. It should remain unchanged. Every time a sharpening stone is

changed the procedure for measuring the sharpening stone (between the thickness

compensator and the pivot) described in section 4.2. should be repeated. If the sharpening

stones are of the same size/thickness, there is no need to measure again.

4.4. Fastening the knife

Position the knife on the rubber mat at the base of the knife sharpener. The edge of a knife

with a blade should be directed outwards (towards you). You will immediately feel the

magnet located in front part of the base. The cutting edge of the knife must slightly overlap

the edge of the base (approximately 1-3 mm).

Attach the aluminum guide tightly to the knife

and secure it with the large fixing screw. You can

use the aluminum guide as a clamp too. You

need not worry about the safety of your blade,

because the guide is made of aluminum. For

additional protection, you can cover the blade

with protective tape.

5. KNIFE SHARPENING RECOMMENDATIONS

You should use the coarsest sharpening stone to begin

sharpening the knife. You should move the sharpening stone

away from you along the blade, and then return it to the

initial position without touching the blade. This is especially

important when working with fine sharpening stones.

The whole blade should be worked until you see burrs

(fractured stripes of metal along the whole length of the

cutting edge). These can be felt by slowly drawing your nail

along the lower part of the edge. After you’ve sharpened the

first side, flip the knife and repeat the procedure for the

second side.

Change the sharpening stones from the coarsest to finer and

sharpen both sides of the knife again. Finer sharpening

stones have less granularity and will eliminate the burrs.

While changing sharpening stones, remove metal filings from

the blade and the knife sharpener to prevent cross

contamination of sharpening stones.

6. OPERATION CONDITIONS AND PRECAUTIONS

HAPSTONE PRO knife sharpener is made of steel and covered with high-quality coating. It

can be used in any conditions. It can be conveniently placed on any surface and its rubber-

tipped legs prevent it from sliding while sharpening.

Before using the knife sharpener, be sure that the horizontal shaft can move freely inside

the pivot unit. If the horizontal shaft does not move smoothly, wipe it with a dry cloth and

oil it (a bottle of oil is included in the assembly kit).

While sharpening a knife, observe all safety measures. Be careful that your hand does not

to slide down the sharp part of a knife.

During the sharpening process, magnetized metal shavings usually accumulates on the

blade of the knife. Use the wipe periodically to clean the blade and remove the

accumulated shavings.

Thank you for choosing HAPSTONE. We wish you sharp knives!

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