FAULTS.2

Question 1

SECTIONS FAIL TO FORM RIBBONS

1. Surfaces and edges of the block are not parallel
   - remedy:
2. Horizontal surface of the block is not parallel to the knife
   - remedy:
3. Paraffin wax is too hard
   - remedy:
4. Knife is tilted too much
   - remedy:
5. Sections are too thick
   - remedy:
6. Knife is dull
   - remedy:

Answer 1

1. Surfaces and edges of the block are not parallel
   - remedy: re trim the block
2. Horizontal surface of the block is not parallel to the knife
   - remedy: re adjust & re orient the block
3. Paraffin wax is too hard
   - remedy: coat horizontal edges of the block w/ wax of lower MP
4. Knife is tilted too much
   - remedy: reduce the tilt
5. Sections are too thick
   - remedy: readjust the thickness of sections
6. Knife is dull
   - remedy: hone and strop

Question 2

SECTIONS EOLL UP ON CUTTING SO THAT THEY ADHERE AND GET BROKEN AGAINST THE KNIFE EDGE

1. Knife is blunt
   - remedy:
2. Tilt of knife is too great
   - remedy:
3. Knife edge is dirty
   - remedy:

Answer 2

1. Knife is blunt
   - remedy: sharpen the knife
2. Tilt of knife is too great
   - remedy: reduce the tilt
3. Knife edge is dirty
   - remedy: clean the knife edge

Question 3

FROZWN TISSUE CRUMBLES AND COMES OFF RHE BLOCK HOLDEE WHEN CUT

1. Reason:
2. Remedy:

Answer 3

1. Reason: freezing is not adequate
2. Remedy: refreeze the tissue block

Question 4

FROZWN TISSUE CHIPS INTO FRAGMENTS WHEN CUT

1. Reason:
2. Remedy:

Answer 4

1. Reason: tissue is frozen too hard
2. Remedy: warm the tissue w/ fingers