| A | B |
|---|
| What can be some reasons as to why Ribbons fail to form | Room too cold, knife is dull, sections too thick, knife tilt too great |
| Causes of crooked ribbons | blocks not trimmed parallel, paraffin may be softer on one side of block, knife and block not alligned |
| causes of compressed, wrinkled or jammed together sections | knife too dull, tilt too slight, cutting too rapidly, paraffin on edge of knife |
| causes of a split ribbon | nicks in knife, too much tilt, edge of knife is dirty, hard particles in the block |
| cause of freezing artifacts | From using fluorinated hydrocarbons for chilling the surface of paraffin blocks instead of ice |
| Cause of venetian blind effect | dirty knife, lint, hair nicks, cacified areas |
| cause of parched earth effect | improper processing, waterbath too hot, use of fluorocarbon spray |
| Types of abrasive stones | Natural and synthetic |
| Different supporting surfaces for abrasives | plate glass, copper and bronze plates, aluminum plates |
| Function of lubrications | as coolants to maintain temp of cutting edge of knife, prevents metal chips from lodging, allows metal particles to flow away from the knife |
| Two types of lubricants | aqueous and nonaqueous |
| types of abrasive powders | diamond dust, carborundum, alumina,magnesium oxide,cerric oxide |
| What is honing | to form the primary bevel |
| what is stropping | to form a secondary bevel(actual sharpening step) |
| advantage of auntomatic knife sharpeners | time is reduced to a few minutes, reduced need to recondition the knives, little maitnence |
| care of microtone | oil before putting away, before using, remove oil with xylene |
