• I've used masking fluid when respraying old frames to mask off around some ornate lugs. The fluid I used was a pale blue but dried almost totally clear, making it tricky to see where I'd gone already with my paintbrush, and it I went over the same area again it was easy to accidentally take it back off as it's super sticky.

    Despite my shitty spraying and being a bit fiddly to work with, it did the job and was infinitely easier than using tape to mask around lugs. Would recommend.