I'm asking the following for a friend: _The black, double-duck canvas top of his 1912 S.C.A.R. (Society de Construction Automobiles de Reims) touring car is held in place by one-hundred brass Murphy-fasteners, some of which have been polished with Wenol brass polish. _The immediate problem is one of harmlessly getting the residual brass polish out of the canvas around the Murphy-fasteners. _Once having solved that, there remains the problem of how, in the future, to polish so darned many brass Murphy-fasteners without staining the fabric. _As there are so many fasteners, masking with tape would be too time-consuming and impractical. _Any ideas?
Bob, Could you cut a template that fits the Murphy? Scott
If the polish has dried and is just sitting in the nooks and crannies between the Murphy fasteners and the top material, an old, soft toothbrush works well for getting the dried polish out.
Regarding keeping the polish off the top next time, maybe cut a bunch of squares out of blue masking tape and cut a hole in each one the size and shape of the base of a Murphy fastener? Pretty tedious, hopefully those fasteners don't need to be polished too often!
Clean off the polish on the canvas with a soft toothbrush dipped in lacquer thinner. Try it in an inconspicuous place first, to make sure the solvent has no adverse affect on the canvas.
The Home Supply places have white vinyl flashing in the roofing section, which is perfect for making a rigid, but flexible template. Take some of that and punch a hole in it the same diameter as the fastener and use only enough polish to lightly dampen your polishing rag, but not so much as to clump up on the fastener and squeeze through to the canvas below.
After the fasteners have been polished to a high shine, carefully dab each one with a brush dipped in clear, professional quality lacquer. Get a very soft, high quality artist brush the same width as the diameter of the fasteners from Michaels or an artist supply place. The lacquer will keep the fasteners from tarnishing for as long as necessary. Jim Patrick
Hire someone else to polish them then tell them if they get any polish on the canvas they won't get paid!