Knife sharpening advanced workshop
In this workshop you will deepen your sharpening knowledge and learn to sharpen knives
and axes with the belt grinder and by hand.
Dates: on request, please ask with contact form Workshops can be arranged from about 3 to 4 people on an individual date.
Time: 3-4 hours
Costs: CHF 140.-
max. 4 participants
Location: OUTDOOOWERK GmbH, Ghöchstrasse 161, 8498 Gibswil Map: https://map.search.ch/Gibswil,Ghöchstr.161
Content:
Repetition short theory knives in general: steels, hardness, stability, benefits
Knives and their functions, advantages and disadvantages
What are the benefits of convex grinding; what does this mean in comparison to other cutting geometries?
Brief comparison of grinding techniques: the major advantage of a convex cutting edge
Belt grinding technique for convex grinding
Practising the belt grinding technique
Auxiliary device, process, control technique
Procedure for resharpening, procedure for resharpening a V-grind to convex
Different belt sanders and their advantages and disadvantages (for anyone who wants to buy one), tips from brands, tips for self-builds
Repetition: training sanding technique(s) by hand for final sharpness
Repetition: practising convex sharpening by hand
Repetition: learning to use auxiliary and control tools
Examine cutting edge and grind under the microscope: what is really happening?
Questions about knives, cutting edges, cases
Test knives
Bring along:
Knife with a straight edge (V-geometry), which is to be resharpened to convex
Bring several knives if you have them, even old ones or ones that are not valuable (practice piece)
Important: no concave cutting geometries, as these usually cannot be resharpened to convex, unless they are relatively thick outdoor knives
Your own knife with a convex grind or, of course, an OUTDOORWERK knife for resharpening
straight edge sharpening: Of course, you can also bring kitchen knives, Japanese knives, scalpels and pocket knives that have a straight edge and do not need to be re-sharpened. This is much easier to do.
Leather sharpening system from OUTDOORWERK (block/leather) or self-made sharpening leather (if you have one)
Leather apron advantageous, cotton apron ok (if you have one)
Work clothes (sparks, dust)
No open shoes!
Note paper and writing utensils
For information:
Most blades have a bevelled and a flat part. If a straight cutting geometry is resharpened to convex with a belt grinder, there will be fine scratches in the transition to the flat. This can only be levelled out by hand or corrected with magnetic surface grinding. To do this, however, it must be possible to dismantle the knife down to the blade, which is rarely possible (it is with OW knives).
However, if a blade is set to ‘full high convex’, i.e. a constant radius from the cutting edge to the back of the blade, these scratches naturally disappear. However, if a blade is sharpened to full high convex, the knife will look different than before.
I therefore recommend bringing several knives with you if possible, even if they are not expensive. You can then practise and feel your way around. If you are unsure or in special cases, please feel free to contact me.
Knife sharpening advanced workshop
In this workshop you will deepen your sharpening knowledge and learn to sharpen knives
and axes with the belt grinder and by hand.
Dates: on request, please ask with contact form Workshops can be arranged from about 3 to 4 people on an individual date.
Time: 3-4 hours
Costs: CHF 140.-
max. 4 participants
Location: OUTDOOOWERK GmbH, Ghöchstrasse 161, 8498 Gibswil Map: https://map.search.ch/Gibswil,Ghöchstr.161
Content:
Repetition short theory knives in general: steels, hardness, stability, benefits
Knives and their functions, advantages and disadvantages
What are the benefits of convex grinding; what does this mean in comparison to other cutting geometries?
Brief comparison of grinding techniques: the major advantage of a convex cutting edge
Belt grinding technique for convex grinding
Practising the belt grinding technique
Auxiliary device, process, control technique
Procedure for resharpening, procedure for resharpening a V-grind to convex
Different belt sanders and their advantages and disadvantages (for anyone who wants to buy one), tips from brands, tips for self-builds
Repetition: training sanding technique(s) by hand for final sharpness
Repetition: practising convex sharpening by hand
Repetition: learning to use auxiliary and control tools
Examine cutting edge and grind under the microscope: what is really happening?
Questions about knives, cutting edges, cases
Test knives
Bring along:
Knife with a straight edge (V-geometry), which is to be resharpened to convex
Bring several knives if you have them, even old ones or ones that are not valuable (practice piece)
Important: no concave cutting geometries, as these usually cannot be resharpened to convex, unless they are relatively thick outdoor knives
Your own knife with a convex grind or, of course, an OUTDOORWERK knife for resharpening
straight edge sharpening: Of course, you can also bring kitchen knives, Japanese knives, scalpels and pocket knives that have a straight edge and do not need to be re-sharpened. This is much easier to do.
Leather sharpening system from OUTDOORWERK (block/leather) or self-made sharpening leather (if you have one)
Leather apron advantageous, cotton apron ok (if you have one)
Work clothes (sparks, dust)
No open shoes!
Note paper and writing utensils
For information:
Most blades have a bevelled and a flat part. If a straight cutting geometry is resharpened to convex with a belt grinder, there will be fine scratches in the transition to the flat. This can only be levelled out by hand or corrected with magnetic surface grinding. To do this, however, it must be possible to dismantle the knife down to the blade, which is rarely possible (it is with OW knives).
However, if a blade is set to ‘full high convex’, i.e. a constant radius from the cutting edge to the back of the blade, these scratches naturally disappear. However, if a blade is sharpened to full high convex, the knife will look different than before.
I therefore recommend bringing several knives with you if possible, even if they are not expensive. You can then practise and feel your way around. If you are unsure or in special cases, please feel free to contact me.