Can you polish them if they are badly scarred (which mine are)? I've tried toothpaste and banana-skin wax (works for CDs!) but just cannot fill the scratches.Have you polished the perspex recently? It's something overlooked and they get badly scarred by debris over the years which scatters light.
If it's made of the same sort of plastic as old watch crystals then polywatch might be worth a goCan you polish them if they are badly scarred (which mine are)? I've tried toothpaste and banana-skin wax (works for CDs!) but just cannot fill the scratches.