I’m one of the ones who uses the plastic blades.
It’s part of a system. If you have big chunks of concrete on the glass you’d have to start with a chemical. I went over some of it here - Recommendation - Plastic Blades
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I’m one of the ones who uses the plastic blades.
It’s part of a system. If you have big chunks of concrete on the glass you’d have to start with a chemical. I went over some of it here - Recommendation - Plastic Blades
