Edging Neksia & Patterned Edgers W5

Question 1

Within the US, the
standard
pattern size adopted is

Answer 1

36.5 mm

Question 2

To increase accuracy in edger settings, the person edging should take their own measurements, as opposed to using only the measurements marked on the frame.

Answer 2

True

Question 3

Inserting lenses into a plastic frame without the assistance of heat is considered

Answer 3

Cold Snapping

Question 4

The position and style of the bevel makes a great deal of difference in the appearance of the finished
eyewear.

Answer 4

True

Question 5

For beveled frames the placement of the bevel is critical for which two reasons

Answer 5

To help hide lens thickness
To help reduce the amount of lens behind the frame front

Question 6

For the best cosmetic appearance, high minus lenses should have which type of bevel design and
placement

Answer 6

Hide-a-bevel (1/3|2/3)

Question 7

Edgers that uses cutting wheels have a two step cycle. During the first part of the cycle the lens is edged to its
basic shape and size; this is carried out on the …

Answer 7

Roughing Wheel

Question 8

Edgers that uses cutting wheels have a two step cycle. During the second part of the cycle the
lens moves over to a finer grit wheel that grinds the finished edge and final size; this is carried out on the …

Answer 8

Finishing wheel

Question 9

edgers must employ water to cool the lens
while processing. Edgers that use wheels are often referred to as

Answer 9

Wet Cut Edgers

Question 10

Non diamond wheeled edgers, slices
little chips off the lens very quickly and does not generate the amount of heat that wheel cutting systems do

Answer 10

Spinning blades

Question 11

Lenses cut on spinning wheel are considered …

Answer 11

Dry cut

Question 12

Do spinning bladed edgers work with glass

Answer 12

No and require a vacuum system to remove lens debris

Question 13

When the facet is used, high-minus lens edge thickness is reduced.

Answer 13

true

Question 14

consists of a light source behind two crossed polaroids. When a lens is placed between two
polaroids, internal lens stress becomes visually apparent.

Answer 14

Colmascope

Question 15

Many patternless edgers use measuring arms that touch the front and back surface of
the lens at the exact place where the lens edge will be when edging is complete

Answer 15

Feelers

Question 16

This decides optimum bevel position based on thickness and lets you be more precise in choice of MBS due to it
measuring the exact place the lens wedge will be.

Answer 16

Feelers

Question 17

pliers helpful in the process of determining whether a lens is the correct size for
a metal frame

Answer 17

Eyewire closure pliers

Question 18

Which of the following lenses are said to emit a sulfurous odor when edging?

Answer 18

High-index plastic

Question 19

Can cause crazing on AR coated lens

Answer 19

Heat, pressure or lens flexing

Question 20

Ability to drill the lens holes for rimless mountings
Ability to groove the lens for semi-rimless mountings.
Ability to polish the edges of the lens.
Ability to safety/pin bevel the edged lens.
Ability to decenter the lens

Answer 20

Options on lens edger

Question 21

may reduce spoilage of antireflection-coated lenses

Answer 21

Use surface-saver tape or discs on the lens.
Reduce chuck pressure on the edger
Avoid heat on the lens when heating the frame and lens together.

Question 22

an abrasive wheel that has become clogged with plastic material, preventing good, clean
cutting.

Answer 22

glazed wheel

Question 23

edging methods yields a more stress-free polycarbonate lens

Answer 23

edging the lens dry until partway through the finishing cycle, after which the lens is finished
wet