DanGibbons Posted December 13, 2018 Report Share Posted December 13, 2018 Unfortunately had an incident that led to a lot of glaze on my shelves. Looking to get it off but don’t feel like spending the money on diamond tools with a dremel. Could I not use a bench grinder to get it off? Does anyone have any low cost advise for this? Link to comment Share on other sites More sharing options...
liambesaw Posted December 13, 2018 Report Share Posted December 13, 2018 They make scrubbers for kiln shelves, sounds like you need an angle grinder Link to comment Share on other sites More sharing options...
Mark C. Posted December 13, 2018 Report Share Posted December 13, 2018 Dan-what type of kiln shelves are these? are they yellow color or silicon carbide-dark color or the something else (a photo will help) also what thickness are they? The bench grinder will work but its easier and leaves a flatter surface with a 4 inch masonry disc on a small hand grinder. I have a few posts on this subject if you use the search function at the top right of Main page Here are the types Link to comment Share on other sites More sharing options...
neilestrick Posted December 13, 2018 Report Share Posted December 13, 2018 Angle grinder. Get a cheap one from Harbor Freight, because the dust will kill it at some point. Link to comment Share on other sites More sharing options...
Chilly Posted December 14, 2018 Report Share Posted December 14, 2018 14 hours ago, neilestrick said: Angle grinder. Get a cheap one from Harbor Freight, because the dust will kill it at some point. And a good dust mask Link to comment Share on other sites More sharing options...
Benzine Posted December 14, 2018 Report Share Posted December 14, 2018 Did the shelves have kiln wash? If so, the glaze should come off, relatively easy. If not, they I imagine the glaze soaked in a bit. Try the aforementioned solutions, like the angle grinder. Ceramic suppliers, also sell a kiln shelf "scrapper" that is good for minor drips. You can also get the same tool, at many home improvement stores, where it is sold with masonry tools. In the future, get a good coat of wash on the shelves. There are several recipes, that people have posted on these forums. You can buy a premade one, but they aren't quite as good. Link to comment Share on other sites More sharing options...
hitchmss Posted December 14, 2018 Report Share Posted December 14, 2018 Angle Grinder for sure; a 4" will work, but a 6" or 9" is what you want. Agree that a cheap harbor freight tool is what you want. Make sure you get a disc that is made for grinding ceramic/masonry. Most hardware stores will have numerous blades in the same shapes/sizes, but formulated for grinding different materials. If you pick up a disc for grinding metal it will take you much longer to grind the shelf. You can splurge for a diamond grinding disc, either continuous diamond, or a cup wheel, but they will cost twice what the cheap grinder will cost. Place your shelf outside on a well supported surface with plenty of ventilation. I like to put an old towel or some other "vibration" absorbing material under the shelf so it wont "walk" away on me, and minimize any chances of cracking your shelf. If the glaze penetrated the shelf deeply (more than 1/8") its your choice whether or not to grind down deep to remove the run. If you grind through half the shelf's thickness to completely remove the glaze, then wonderful, but now you have a big divot. If you dont remove it, every time you fire it will remelt and penetrate further into the shelf, and eventually will lead to the shelf's demise. I like to grind to the surface and then coat with heavy layers of wash. Wear a dust mask too....ground up refractories are nasty. Goggles and gloves too; hot chunks of ground glaze are sharp and hot. Lastly, some ear protection too....You'll look snazzy! Link to comment Share on other sites More sharing options...
Chilly Posted December 14, 2018 Report Share Posted December 14, 2018 You might find you spend more money and time on trying to clean that shelf than a new one would cost. Link to comment Share on other sites More sharing options...
hitchmss Posted December 19, 2018 Report Share Posted December 19, 2018 On 12/14/2018 at 4:18 PM, Chilly said: You might find you spend more money and time on trying to clean that shelf than a new one would cost. Agreed; 12x24x1" cordierites at my local supplier are less than $30 a shelf. Cheap mexican junk, but when I was using them, Id get about a year before they were too warped to use anymore. Link to comment Share on other sites More sharing options...
Mark C. Posted December 19, 2018 Report Share Posted December 19, 2018 Looks like Dan (OP) never came back.Last visit was on the day he posted the 12th. We get a lot of this it seems. Link to comment Share on other sites More sharing options...
Benzine Posted December 20, 2018 Report Share Posted December 20, 2018 15 hours ago, Mark C. said: Looks like Dan (OP) never came back.Last visit was on the day he posted the 12th. We get a lot of this it seems. Yeah, that's too be expected with forums like this. We have a convenient supply of experts, who are happy to give great advice. At least it was a reasonable question, as opposed to those who basically come here for free R&D. Link to comment Share on other sites More sharing options...
neilestrick Posted December 20, 2018 Report Share Posted December 20, 2018 Someone else will benefit from this thread at some point. Link to comment Share on other sites More sharing options...
Mark C. Posted December 20, 2018 Report Share Posted December 20, 2018 57 minutes ago, neilestrick said: Someone else will benefit from this thread at some point. But my royalty checks are less per post when the original poster does not reply. Link to comment Share on other sites More sharing options...
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