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:
knife theory in general: steels, hardness, stability, utility
outdoor knives and its functions, advantages and disadvantages
what are the advantages of a convex edge? What does this mean in comparison to other cutting geometries?
short comparison grinding techniques: the great advantage of a convex cutting edge
belt grinding technic for convex edge
auxiliary device, sequence, control technology
procedure for resharpening, procedure for regrinding a V-sharpening to convex
various belt grinders and their advantages and disadvantages (for all those who want to buy one), brands, tips for homemade belt grinders
training of grinding technique (s) by hand for final sharpness
practice convex sharpening by hand
learning to use auxiliary and control tools
study cutting edge under the microscope: what happens during the sharpening process?
questions about knives, edges and cases
testing the knives
(guided tour of OUTDOORWERK workshops, if desired and time)
Bring:
knife with straight edge (V-geometry) to be grinded to convex shape
bring several knives if you have (also some old ones for training)
Important: bring no concave edge geometry knives, as they cannot be shaped to convex (too little material available/become too thin)
own knife with convex edge or of course an OUTDOORWERK knife for resharpening
sharpening straight edges: Of course, it is also possible to bring the kitchen knives, Japanese knives, scalpels and pocket knives, which have a straight edge and should not be made in to a convex geometry. This is much easier to do
leather sharpening system from OUTDOORWERK or self-made sharpening leather (those who have one)
leather apron prefered, cotton apron ok (those who have)
work clothing (sparks, dust)
no open shoes!
notebook and pencil
For your information:
Most blades have a bevel and a flat part. If a straight blade geometry is grinded to convex edge with the belt grinder, there will be fine scratches at the transition to the surface. This can only be compensated by hand or corrected with magnetic flat grinding. For this purpose, however, the knife must be able to take apart, which is rarely possible (possible with OW knives). Since we don't have a surface grinder on site and it exceeds the time frame of the workshop, we have to live with these fine scratches. If you grind an OUTDOORWERK knife on the belt and pay attention, there won't be any scratches, because you don't have to grind it up to the "transition".
However, if a blade is made to a "full high convex", i. e. a constant radius from the edge of the cutting edge to the back of the blade, these scratches will naturally disappear (see first course picture above). If you regrind a blade to full high convex, the knife will look different than before.
Therefore, if possible, I recommend to bring several knives with you. Then you can practice with it. In case of insecurity or special cases you can 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:
knife theory in general: steels, hardness, stability, utility
outdoor knives and its functions, advantages and disadvantages
what are the advantages of a convex edge? What does this mean in comparison to other cutting geometries?
short comparison grinding techniques: the great advantage of a convex cutting edge
belt grinding technic for convex edge
auxiliary device, sequence, control technology
procedure for resharpening, procedure for regrinding a V-sharpening to convex
various belt grinders and their advantages and disadvantages (for all those who want to buy one), brands, tips for homemade belt grinders
training of grinding technique (s) by hand for final sharpness
practice convex sharpening by hand
learning to use auxiliary and control tools
study cutting edge under the microscope: what happens during the sharpening process?
questions about knives, edges and cases
testing the knives
(guided tour of OUTDOORWERK workshops, if desired and time)
Bring:
knife with straight edge (V-geometry) to be grinded to convex shape
bring several knives if you have (also some old ones for training)
Important: bring no concave edge geometry knives, as they cannot be shaped to convex (too little material available/become too thin)
own knife with convex edge or of course an OUTDOORWERK knife for resharpening
sharpening straight edges: Of course, it is also possible to bring the kitchen knives, Japanese knives, scalpels and pocket knives, which have a straight edge and should not be made in to a convex geometry. This is much easier to do
leather sharpening system from OUTDOORWERK or self-made sharpening leather (those who have one)
leather apron prefered, cotton apron ok (those who have)
work clothing (sparks, dust)
no open shoes!
notebook and pencil
For your information:
Most blades have a bevel and a flat part. If a straight blade geometry is grinded to convex edge with the belt grinder, there will be fine scratches at the transition to the surface. This can only be compensated by hand or corrected with magnetic flat grinding. For this purpose, however, the knife must be able to take apart, which is rarely possible (possible with OW knives). Since we don't have a surface grinder on site and it exceeds the time frame of the workshop, we have to live with these fine scratches. If you grind an OUTDOORWERK knife on the belt and pay attention, there won't be any scratches, because you don't have to grind it up to the "transition".
However, if a blade is made to a "full high convex", i. e. a constant radius from the edge of the cutting edge to the back of the blade, these scratches will naturally disappear (see first course picture above). If you regrind a blade to full high convex, the knife will look different than before.
Therefore, if possible, I recommend to bring several knives with you. Then you can practice with it. In case of insecurity or special cases you can contact me.