U2 LAB: HONING AND STROPPING Flashcards
Removal of gross nicks and blunts on the cutting edge of knife
Honing
Honing stone is also known as?
whetting stone
Examples of Honing Stone
- Fine carborundum
- Arkansas stone
- Belgium Yellow
This is used to lessen friction (cover entire surface of knife)
Lubricants
Common lubricants
- Mineral oil
- Clove oil
- Xylene
- Soapy water
Fineness of abrasive used is equal to?
degree of sharpness
Direction of honing
Heel to toe
The hone should be lubricated with ________ before using.
3 to 5 drops of warm soapy water or oil
Amount of strokes for Honing
20-40x
After honing, wipe knife off with?
Xylene
This is used for manual sharpening, gives the best result.
Belgium Yellow
Belgium Yellow
the other side is?
carborundum
Belgium Yellow
derived from?
arden mountainous region of belgium full of quarry
Has a polishing effect compared to Belgium Yellow
Arkansas
Arkansas
derived from?
mountains in Arkanses
Arkansas
classification of Arkansas stones
- soft arkansas
- hard arkansas
- transluscent arkansas
Arkansas
Extrafine, light gray, looks like marble and a lot more quartz
Transluscent arkansas
Arkansas
has a compound of silicon dioxide, hexagonal shape, embedded in the hole of stone (allows for fine polishing)
Quartz
Arkansas
Most hardness
7
Coarser, used only for badly nicked knives, followed by either Belgium Yellow or Arkansas
Fine Carborundum
Fine Carborundum
Trademark whetting stone made up of very hard substance and has a crystalline structure
Silicon carbide
Fine Carborundum
Used for?
gross cutting
Piece of glass about 2 inches wider than length of knife
Plate Glass
Plate Glass
used to remove nicks
Abrasive powder
Plate Glass
used for final polishing
Diamantine
consists of glass disc or wheel driver by an electric motor
Automatic Machine hone
Automatic Machine hone
Knife is pressed together against?
flat side of rotating glass wheel
Process where burr formed during honing is removed and cutting edge of knife is polished
Stropping
T/F: Burrs are seen only microscopically.
True
Purpose of stropping
polish and sharpen cutting edge
Strokes for Stropping
40-120x
Direction of Stropping
Toe to Heel
Knife should be stropped before?
every object is sectioned
This is made up of the best quality horse leather, firmly attached to a solid back to prevent sagging.
Paddle strop
Good leather strop is called?
shell horse
Hanging strop is also known as?
Razor strop
After use, knife should be ______ to prevent from rusting.
oiled or greased
This forms a protective layer in which oxygen cannot come in.
oil or grease
