[Colquhoun]

Originally Posted by jwdeane

Just dont forget...when dyeing something twice, the second color will be affected by the first color. In the first and third chip, this will not be a problem. However, the 4th chip in this example will be tough because the red will be hard to get this color, starting with such a brown base. Also, do we know that any dye will penetrate after a chip has been previously dyed? It might end up being a blotchy mess....

[Colquhoun]

I wonder if something like this would work, if rubber cement doesn't:
http://www.homaxproducts.com/product.../02/index.html
It is a rubberized dip used for tool handles and other things. Looks thin enough to paint with....but it all depends on how easily (if at all) it comes off a chip.

[the3rd]

Originally Posted by Colquhoun

I wonder if something like this would work, if rubber cement doesn't:
http://www.homaxproducts.com/product.../02/index.html
It is a rubberized dip used for tool handles and other things. Looks thin enough to paint with....but it all depends on how easily (if at all) it comes off a chip.

I've never used that brand, but I used a similar product and you would need a chisel to remove it from whatever is coated with it.

[Wedge Rock]

Originally Posted by Colquhoun

Just dont forget...when dyeing something twice, the second color will be affected by the first color.

My point was to dye the chip a light color (say yellow), then cover up "edgespots" with rubber cement (thus preventing their exposure to the second dye process), then dye the chip a darker color (say red).

You'd be left with a red chip with yellow edge spots.

[jwdeane]

Originally Posted by Wedge Rock

My point was to dye the chip a light color (say yellow), then cover up "edgespots" with rubber cement (thus preventing their exposure to the second dye process), then dye the chip a darker color (say red).

You'd be left with a red chip with yellow edge spots.

I don't think you can just cover up the yellow, then dye the rest of the chip red. The base yellow color will combine with the red to form dark orange (?)

[Colquhoun]

Originally Posted by jwdeane

I don't think you can just cover up the yellow, then dye the rest of the chip red. The base yellow color will combine with the red to form dark orange (?)

Yeah, this was my point. It think you would need to tweak the second dye color quite a bit to get it to give you the result that you are hoping for. However, the resulting color might be perfectly acceptable, but it will not be the same color as if you used a white chip.
Something I deal with all the time is CMYK printing on non-white papers. It can really make the colors different...not worse, but you need to not expect the same result as using white paper.

[Wedge Rock]

Absolutely. Sorry for the mis-understanding.

But some of the dye combinations are the result of two different color dyes to begin with... While it wouldn't come out exactly the same if you dyes one color then the other as it would if you mixed the colors and dyed them once, you'd probably get reasonably close.

But this is obviously why you dye the lighter color first.

And unless you want to reverse the process (and cover up the entire chip *except* the edgespot area), you'll never get dark edge spots on a light chip. The base (the part dyed twice) will always be darker.

[JessterCPA]

Rubber cement. Brilliant friggin idea.

Jesse

[Cellemetry]

What temperature (Dye and water) do you cook the chips?

[`ash]

I would try modelling clay, play-doh, or blu-tac.
Blu-tac would be my first attempt because it would stick to the chips.
You need something that is soft so it can be pressed into all the grooves and textuxes of the chip and form a tight seal.

I tried painting edgespots on some superdiamonds and found that if the paint was to thin, it would bleed and run into the texture of the chip.