billnpatti wrote:Gene, You've got my attention when you stated that you fill cracks and checks with powdered turquoise, silver and other stones. I would like to try doing this. What can you tell me about it?:o
There are many ways to accomplish it. I am a fan of SIMPLE. If I could find it locally, I would buy the Turquoise already powdered. But, such is not the case. So, I grind and sift it myself. Turquoise is not a real hard stone. My "mortar and pestle" is a 8" length of 2" drill rod, a 4" length of 8" well casing, and a 10" dia. piece of 1/4" flat steel. The casing sets loose on the round plate and I crush the stone inside the casing with the drill rod.
I use an exceptionally fine metal screen to sift with. So fine that only powder the consistency of flour will get through. Then it's pound, sift, pound, sift....etc. till enough is collected. Some voids are large enough to use chunks. that saves a lot of pounding.
Next is the epoxy. I use a product called "Clear Cast" or, System 3 works as well. Very small voids can be filled with powder and a good CA glue.
If the void is through and through, tape off the bottom. Mix and pour to fill the void about 1/2 - 2/3 full. Depending on the size of the chunks, if you use chunks. I usually color this layer. I use acrylic artist paint. A little dab'll do ya.
Let the epoxy cure.
Next step is to lay in the chunks then pour in more epoxy. If chunks, I color this layer also.
If using powdered stone, you can put it in on the first layer of epoxy and pour in more epoxy, or mix it with the epoxy, then pour. If using powdered, I don't color either layer.
I use an RO sander, 60 grit up through 120 to smooth the inlay. Then hand sand up through 300. Finish is usually poly or marine varnish.
I get brass filings from hardware stores that make keys. Sprinkle a little in/on the final pour. Looks like gold! Haven't done it, but you could use the filings in place of the powdered stone for a different look.
My silver is dental silver that comes in little capsules with
mercury as a binding agent. You have to have a dental appliance called a jitterbug to hold and agitate the capsule.
AND, USE RUBBER OR HEAVY LATEX GLOVES!
Each capsule will yield enough silver to fill a 2" long, 1/8" X 1/8" groove. I apply thick CA glue to the groove/void and push in the silver with a flat dental probe. If you like to play, you can use a Dremel, or similar, to incise veins in the cured powdered stone/epoxy.
Hope this helps. Have fun!