the chromium crusher 2.5 inch 4-piece grinder is the best weve ever found. its made out of heavy duty and durable zinc alloy. it features a clear top with a mill handle for easy grinding, a magnet in the lid, and a mesh screen for filtering fine pollen. you even get a pollen scraper to make things easier.
the chromium crusher is the only grinder in its class that offers its customers both materials in heavy duty zinc and precisely surfaced cnc aluminum. unlike other over-priced, sub-standard grinders on the market, the chromium crusher manufacturing process ensures that our grinders are made from stronger and more durable materials than their competition.
adjust the coarseness of the grind with the twist of your wrist. flip over the pepperball pepper grinder and adjust the dial of the grindtune lever between five different settings to achieve your desired peppercorn coarseness. this feature makes it so easy to switch between thick, almost full-size peppercorn chunks to super-fine pepper granules.
using a coffee grinder to pulverize potassium nitrate. if one does not have a ball mill there is another option for grinding coarse potassium nitrate into a free flowing, fine powder. coffee and spice grinders work well for grinding small batches of individual chemicals. even though i have a ball mill, there are times when the coffee grinders come in handy for pulverizing smaller batches of chemicals.
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how to build a ball mill, for black powder took a lot of work to make this, from making the actual ball mill to editing ,rendering the video 35 times because i had to re adjust some things
the potassium nitrate should be milled first to make sure it's nice and fine. a ball mill will do the job but a blade-type coffee grinder works just as well and you can get them for about $10 at walmart. be sure to mark the one that you use for this as oxidizers only you never want to grind fuels in the same grinder you've used for oxidizers. zinc
contamination might be an issue for other uses. a steel drum would probably work better if you can find one, or make one, but it would be a lot louder in use. here you can see an overview of the ball mill with the drum removed. construction is super simple. just three pieces of wood plank banged together to make a platform for mounting all the parts.
a lot of the supplies can be recycled from other projects and found in junk piles, but some may need to be purchased. make the base. the wooden base will serve as the support for the ball mill. it can be made by resting the wooden platform on top of the two 1x10x4 2.54cm x 25.4 cm x 10.16 cm pieces of wood.
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the ball mill jars. the jar's top edge may have to be pried gently outwards to allow the inner lid to slide down into its position. pull the jar's top edge outward and 'burp' the jar to relieve any pressure that was built up as the inner lid was inserted. place the outer cap on the jar and push it downwards.
put a little putty on the bolt first. insert the bolt into the screwdriver's bit holder. cover the whole joint with putty. the more putty the better the ball mill stays together.