A couple of years ago at our NCECA booth, and a man came up, saw the silicon carbide grinding discs we had been selling for 20+ years and asked if we had any with diamond grit………… he said it would be faster and better. I said no… but when I got back from the convention I checked into it and found that I could get a metal plate and magnetic discs for hundreds of dollars that had diamond grit, or a lapidary system for a few thousand dollars.….. I didn’t think very many potters would be interested at that price. But then I discovered a hardness chart which showed that diamonds have a hardness of 7000 and silicon carbide was way down the list at 2400 hardness.
I got one of those expensive diamond grit lapidary discs and soon found out that they were amazingly superior in every way to silicon carbide discs ……. much faster, longer lasting, etc. So with my decades of manufacturing background I went to work to manufacture adhesive-backed diamond grinding discs for as low as $39.95 that could go on a potters wheel.
The Diamond Grinding Discs worked so well that I wanted to compare diamond grit for other applications like removing glaze drips. So I got out my Dremel and it had in the set a 1/2” diameter red sanding drum. After a huge effort I came up with the same thing only with diamond grit… first I tried Dremels’ red aluminum oxide sanding drum ………… after 2 minutes grinding on a piece of high fired pottery I gave up since it didn’t do anything………. Then I tried the 1/2” diameter diamond grit sleeve drum…. In just a few seconds it was through the glaze and grinding clay…. Impressed with that, I tried some sharp glaze drips, but the glaze ripped the sleeve under the diamond grit and destroyed it…. so I tried a metal sleeve with diamond grit. I tried the Harbor Freight sets….. the same thing……. great for a few seconds. So I went to work and had rotary tool bits made for me which have diamond grit and metal powder formed under intense pressure into a solid rotary tool bit with diamond grit down to the shaft. They worked exceptionally well ………We call them DiamondCore tools.
In the meantime I collected all the available types of sandpaper I could find… brand name Makita red aluminum oxide, black silicon carbide type, 3M purple stuff, and I tested them first on a piece of glass I had. After 300 strokes and only a few scratches I gave up with the red aluminum oxide Makita stuff, then the silicon carbide sandpaper made a few more scratches and the 3M purple stuff left more scratches than both of them after 300 strokes. Then I tried some diamond sandpaper which was nearly impossible to find..… but I stopped after 4 hand strokes because there was a pile of white dust that had formed…. It turned out to be coming from all the glass being scratched off by the diamond grit. I found I could remove more in 4 to 5 hand strokes with diamond grit than I could in 300+ strokes with the others ….with far less effort and fatigue… I was impressed, but I wasn’t sold until the same thing happened on high-fired clay and glaze.
So I started making diamond grit sanding pads people could purchase for $5.00 each …. everyone who tried them loved them. I then tried hole drilling bits with diamond grit on the edge…people liked them but the only lasted a few uses so I quickly moved to making them with a solid DiamondCore version instead.
Then we added DiamondCore glaze polishing rotary tools with diamond grit and rubber down to the shaft. Not long after we discovered that with a round tip DiamondCore Rotary Tool you can autograph or etch in high-fired clay or glaze ………… so now we have developed a large variety of affordable diamond grit tools for Potters, Ceramic Artists and Glass Artists in a wide variety of grit sizes.
So whether you need to remove a huge glaze drip with a DiamondCore Rotary Tool, clean out a salt and pepper shaker hole that glaze ran into, level a pot with a Diamond Grinding Disc that developed a warped foot during firing, drill a drain hole in a pot for a plant or maybe just smoothing off a foot with a Diamond Grit Hand Sanding Pad so it won’t scratch your table ………you can do it faster, easier and with far less effort and fatigue with one of our easily affordable DiamondCore tools.
Faster… save a lot of time
Harder… requires far less force
Stronger … means much less fatigue
Better …. superior results