To tighten plastic glasses frames, you'll typically need to apply heat to the plastic to make it more pliable, then gently adjust the frame.
Here's a breakdown of the common method:
- Apply Heat Carefully: The most common way to loosen the plastic enough to adjust it is with heat. This can be accomplished with a hair dryer. Hold the hairdryer a few inches away and use a low heat setting.
- Focus on the Temples (Arms): Concentrate the heat on the part of the temple (arm) that needs adjusting. If the glasses are too tight behind your ears, focus on that area. If they're too tight on the sides of your head, focus on the hinges.
- Adjust Gently: After heating for approximately 20-30 seconds, gently bend the temple into the desired shape. When adjusting the temple, hold down the temple with one hand behind the hinge.
- Cool and Check: Allow the plastic to cool completely. This will help it retain its new shape. Try on the glasses and see if the fit has improved.
- Repeat if Necessary: If the glasses are still too tight, repeat the process. It's best to make small adjustments at a time.
Important Considerations:
- Avoid Overheating: Overheating can damage or even melt the plastic frames. Use low heat and short bursts.
- Professional Help: If you're uncomfortable adjusting the glasses yourself, or if they are expensive frames, take them to an optician. They have the tools and expertise to adjust frames properly.
- Type of Plastic: Some plastics are more heat-sensitive than others. Proceed with caution, especially with vintage or unusual frames.
- Consider the Hinges: If the hinges are the problem, you might need a small screwdriver to tighten the screws (if applicable). If the hinges are stiff, a tiny drop of lubricant (like WD-40) can help. Use sparingly and carefully to avoid getting it on the lenses.
