Huntonia Posted March 7, 2021 Share Posted March 7, 2021 I tried to get some dolomite ready for prepping today, this is first time I've used the dolomite since I got more serious about the quality of my medium, and first time trying pure dolomite. The dolomite I have is raw dolocron from the pottery supply house, I couldn't find any pre-sifted on their website. I used a mortar and pestle, baked the dolomite and sifted through a 120 mesh. Very little powder went through the mesh and what did is still clumping and sticking to surfaces. I don't think it will run through the paasche like this. Here's the mesh after a spoonful of dolomite: And here's what made it through the mesh Is there something I can do to make this workable or do I need to find someplace to buy pre-sifted dolomite? Link to comment Share on other sites More sharing options...
Kane Posted March 8, 2021 Share Posted March 8, 2021 Was it rated 40-13? I think the Dolocron 40-13 is 40 micron (which is what you want), and should pass through 325 mesh. If the size is too large, I don't know if it will be possible to break it down without some form of mechanical equipment. Let me tag @Malcolmt, as he might know of a way. 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Malcolmt Posted March 8, 2021 Share Posted March 8, 2021 There is no way to salvage, you need the bag that is labelled 4013. 95% of that bag passes through a 120 mesh screen about 60% passes a 200 mesh screen . 40 micron is about 325 mesh (44). There is no economically priced dolomite that you do not have to sieve. The 4013 I get is manufactured by Washington Mills and costs me about $25 Canadian for 50 pounds. I get it from Pottery Supply house (PSH) but I pick it up in person 5 to 10 bags at a time (I buy for a lot of the preppers up here as I live 20 minutes away and see most of them at some point in a year0 (though not this year) 1 Link to comment Share on other sites More sharing options...
Malcolmt Posted March 8, 2021 Share Posted March 8, 2021 Hold up ,,, you might actually have 4013 dolomite.......I just looked at your pictures, that is not a sieve. You cannot sieve through a fabric mesh with dolomite. It will just stick hopelessly unless the mesh is metal. You need a geological sieve set at least 8 inches in diameter a good starter set is 50, 120, 200, 325 mesh with a bottom pan and top cover. Get used as these are not cheap. 2 Link to comment Share on other sites More sharing options...
Huntonia Posted March 8, 2021 Author Share Posted March 8, 2021 50 minutes ago, Malcolmt said: You cannot sieve through a fabric mesh with dolomite. It will just stick hopelessly unless the mesh is metal This is just a bent sheet of 304 stainless steel wire mesh, is that workable? Link to comment Share on other sites More sharing options...
Malcolmt Posted March 8, 2021 Share Posted March 8, 2021 Sorry looked like fabric, I have no idea what the mesh in a geological sieve is made out of......... other than it is metal, I have a full set of Tyler Brass walled testing sieves 12 inch, 30,40 50,100,120 170, 200, 325. Then I have an 8 inch set of 350, 400, 500 Link to comment Share on other sites More sharing options...
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