Smart tips of heating optical frames
Do you really know how to adjust the optical frames by using heater?
1. Thiness of the frames:
The thinness of the frame material is the single most important factor in determining the proper heat setting for warming. The thinner material, the faster it will heat up. Lighter, thinner frames will heat and cool much faster than heavier, thicker frames .
2. Use the lowest amount of heat needed to accomplish the task :
Excess heat is an enemy of all frame materials . When a frame heats up it will soften very quickly . To gain experience , always start with lower heat setting .
3. The frame is ready when it is pliable.
Don ' t wait until it actually softens . Once you let a frame soften , it can quickly become un - manageable .
4. Never leave a frame unattended in a warmer.
5. Know your frame material and follow manufacturer ' s recommendations on glazing and adjustments.
a . Acetate / Plastic : requires moderate heat for adjustment .b . Optyl : requires that you hold the adjustment while it cools .
c . Polyamide : Glaze cold . You should never use heat to insert lenses.
d . Nylon / Carbon : Require high heat settings as they are highly heat resistant, because it will shrink the eyewire .
e . Polycarbonate : polycarbonate frames for sport or safety can not be safely adjusted with heat .
6. Mounting a lens :
Try to concentrate the heat on the eyewire portions of the frame avoiding the end pieces and bridge areas . Mount the lens as soon as the material is pliable . Don ' t wait for it to soften .
7. Bridge adjustments :
Leave lenses in for bridge adjustments for extra stability . A heat concentrator helps focus the heat in bridge area .
8. Temple tip adjustments :
Always heat a temple tip or plastic temple before adjusting or you risk cracking the plastic .
Remember to heat replacement temple tips when putting it on the core wire to avoid cracking the new tip .
9. Heat shrink tubing :
Hot air is the best way to apply shrink tubing to cables as there is no salt or glass beads to get in between the tubing and the cable .