Sorry, I meant to say “is there a technique to painting window panes”
Better to mask off each square or just paint and scrape off excess on the glass?
I don't use tape, but as a DIYer if might make sense. A down side of tape is that people then apply copious amounts of paint, when removing the tape it may pull the paint off the surface.
One could however use a sharp 9mm knife to cut through the paint line though.
Please do not use regular "white" masking tape if you plan to leave it on for a week or so. The UV light makes the glue go rock hard. Blue masking tape can be left on for much longer.
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