Don Romano 🍹Glasses protop: Applying a heat gun to strategic spots on plastic glasses will let you bend them easily. Use 150°C on the heat gun, no mouthpiece and apply heat for about 2-4 seconds, and then see if it will bend.
Warning: You might end up spending all afternoon fine tuning the fit if your glasses. You can tune it way snugger than they have time for at the optician.
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