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Go slow and lite, with wiping. Give the solvent time to dry, too much will dissolve and pull the paint/marker out of the recesses. The alcohol can have some effect on some plastics, but not like lacquer thinner. So....slow n lite, little at a time.
Hey, if ya mess up, just start over.
I couldn't tell ya how many times I had to start over, on scales I've done.
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There is a multi-colour technique called hydro dipping that puts a random multi-coloured finish on almost any surface. That looks like the colours that are revealed where the cover coat has been removed.
https://youtu.be/9UAHI7Mio00
Then you could apply a single colour cover coat that you selectively strip off to reveal the colours underneath using one of the strategies described above.
It’s like the kid’s craft etching technique of covering a sheet of paper with scribbles using different coloured crayons and then colouring over that with black crayon. When you “etch” the black off using a popsicle stick, you reveal the multiple colours in the layer underneath.
BIG WARNING - I haven’t actually tried this, but my research on the internet seem to point to this technique as being viable.
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My daughters do that with fingernail paints. Then dip false nails in it.
Glue n go, as they say.
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I've seen a few vids on youtube doing that kind of painting. It's really cool. Definitely not what was done to Randy's razor but cool. I want to try it someday on something.
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I have long admired the scales on the razors made by Antonio Tadross.
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3 Attachment(s)
My best jobs are done (IMO) with water-based paint pens. It is easily washed off if I screw up. As done, lightly misted with clear.
I found light coloring and filling is best. Oil based stuff is permanent right away.
Attachment 338259Attachment 338260Attachment 338261