Ready readers

[ellivron55]

How are ready readers glazed.Looking in the local supermarket none had eyewire screws yet all the lenses were rock solid secure.
thanks

[Chris Ryser]

How are ready readers glazed.Looking in the local supermarket none had eyewire screws yet all the lenses were rock solid secure.


They are usually inexpensive polycarbonate lenses that have some flexibility, edged exactly righ and the squeezed with gentle but very strong chinese hands into the frame.

Arn't they doing a good job, even on el cheapo frames???????????? http://www.optiboard.com/forums/images/icons/icon14.gif

[HarryChiling]

We will sometimes shrink fit lenses into a frame without screws. Puts the lens in the freezer for 20 minutes and place the frame in the hot air frame warmer for a while then it gets easier to snap the lens into the frame then when the temperatures equalize the plastic expands and the frame contracts and the fit tightens.

[RGC_man]

It is surprisingly easy to glaze thin CR39 lenses into a metal frame. I have done it on occasion when the screws were jammed solid.

[impact500]

Most low price readers made in China use acrylic lenses.

[LENNY]

Most low price readers made in China use acrylic lenses.
Surfaced or pressed nice and thin!

[impact500]

Molded

[ellivron55]

Just a question leading on from this.How are dummy lenses edged and what are they made of?

[chip anderson]

If you sell the things either stock a lot of 1.5 and 1.6 mm hinge screws or be sure an peen everyone before you let it go out the door. Otherwise the patient will be back in your door for screws a lot more than you have time for.

Chip