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Ron, My theory is it is the texture of the blasted surface. I was going to see if one of my friends has one of those Intel digital microscopes that connects to the USB port of the computer and compare the surfaces- but now the silicon carbide is out of the blaster, and it's a real project to put it ...

Well, I think I've solved the hazy irid sandwich problem. In short, it's the silicon carbide grit. After innumerable failures with silicon carbide (both 120 and 220 grit), I changed the grit in my blaster to 120 aluminum oxide and blasted, cleaned and fired the same way I had been. Came out perfect....

What a beautiful job on the horse bowl Steve. Please let us know how the Aluminum Oxide works for the irid on irid technique so we can all add it to our encyclopedia of useful information. Tony Tony, The new grit came today. Emptied the old grit, and filled with 120 Aluminum Oxide, and blasted some...

Bob,

I got my first two 50 lb "boxes" of grit from Glastar. They cost about $100 each.

I just ordered 50 lbs of aluminum oxide from McMaster Carr for about $50.00.

If the Aluminum works better than the silicon, I'll have 100lbs of silicone carbide for sale.........

Steve

Thanks guys. It's sure nice to have moral support when dealing with these technical issues.

Steve

Ron, No. I haven't figured it out yet. However, so far, everyone that has responded to me that they have successfully used this technique has been using aluminum oxide. Tony has indicated that the gave up on this technique because of the same problems I'm having - he's using silicon carbide. So far,...

Just testing how to post images:



Steve

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