The Abrasive Armory An abrasive supply company for sand blasting, lapidary, tumbling, reborn doll, refractory and more. We offer abrasives and supplies in the quantities you need, big or small. Our Shipping is FAST! Your order will usually arrive in 1 to 4 business days after we ship it. (barring any unforseen delays in transit) White Aluminum Oxide (White Fused Alumina) 220 Grit 10 LB Also available in the following quantities: 1lb, 2lb, 10lb, 15lb, 25lb, and 40lb Also available in the following grits: 24, 46, 60, 80, 100, 120, 150, 180, 220, 50 micron, 320, 500, 600, 800, 1000, and 1200 Look inside our eBay store and navigate to the grit, size, or type of abrasive you need! Other products we sell: White Aluminum Oxide, Silicon Carbide, Glass Bead, Steel Shot, Corn Cob, Walnut Shell, Boron Carbide, Nozzles, and more! Look inside our eBay store! Perhaps one of the most commonly used abrasives for sandblasting, surface prep, carving and etching. Aluminum Oxide (brown or white) is tough and will give you many repeated impacts. Brown aluminum oxide is not friable, it does not break apart easily and keeps its shape and cutting edge. As it wears it slowly rounds itself out. White, on the other hand, if friable, as it wears it slowly shears apart, which has the effect of creating new cutting edges. White Aluminum Oxide is our most common selling aluminum oxide. The fast-cutting action minimizes damage to thin materials by eliminating surface stresses caused by heavier, slower-cutting media blasting grits. Common uses include Cerakote and DuraCoat preperation, general sandblasting and sand carving, dental labs, and glass etching. For glass etching, an even better product is silicon carbide. Do you need White or Brown? While there will always be different opinions and preferences when it comes to using white or brown aluminum oxide for sandblasting, there are some considerations to keep in mind. Brown is a good all purpose grit for general purpose stripping of the work surface. As it is used repeatedly, it simply rounds itself out until it is no longer effective. White on the other hand is friable. As it wears out, it breaks apart and forms more cutting surfaces. Many people consider this to be an advantage. While new cutting surfaces are formed as the abrasive breaks down, I think it is important to note that the new cutting surfaces will be at a higher grit as they get smaller. Typically, many of our users doing specialty finishes, like cerakote or DuraCoat, use white as there is less risk of particle embedment into the work piece. However, professionals purchase both. General Sand Blasting info - for your reference... Particle Size Conversion Chart: Use the following charts to cross reference different grit grading systems with their associated sizes.
The difference between round and angular abrasives: The term "bead blasting" has come to be the generic term for media blasting or "sand blasting". This may be confusing to beginners when they are choosing their grit, as they may assume that they should buy "glass bead". In fact, different abrasives are used for different purposes. Glass bead is round, like a ball. It peens, refines, cleans, and shines metal surfaces as it is used. Additionally, it removes burrs and preps the work surface for paint or other coatings. While it will remove small amounts of rust, paint, or other material, that is not its intended purpose, nor is it an effective choice. If you need to smooth out a surface, prep for paint, shine aluminium or other metals, or remove burrs...then it is a great choice. When the user needs to strip paint, rust, or otherwise remove material from an object. They should choose an angular abrasive like aluminum oxide, garnet, or similar. These abrasives are shaped with sharp edges and will slice away layers to get to the good surface. Glass bead, being round, will repeatedly pound the surface. Many commercial operations run two cabinets, the first with a stripping abrasive like aluminum oxide, and the second with glass bead. As a starting point, every cabinet deserves to have two things sitting next to it from the beginning...Aluminum Oxide and Glass Bead. Most users will be able to accomplish most of their tasks with those two products. A good starting point is white aluminum oxide 100 grit, and glass bead mil 8 (some call it 80). How to choose an abrasive: The first question to ask is whether you are working inside of a cabinet where the product can be contained and reused, or, are you out in the open where you are unable to continually reuse it? If you are in a cabinet, then you should choose a higher quality abrasive like Aluminum Oxide, for your stripping needs. While it may be more costly up front, it quickly becomes cheaper as you continually use it. If however, you are sand blasting in a garage where you are unable to recover a bulk of the product, then use something more economical. In cases where you are outside of a cabinet, but are able to recapture the abrasive on a floor, tarp, or by other means, sweep it up and reuse it. But, before you put it back into your system run it through an old window screen to remove large debris. The two most common problems with blast systems: To small of a compressor. When a system is not functioning correctly, their are typically two main culprits. The first is an undersized compressor. Typically people assume that if they are running the correct pressure, than it should work. However pressure is not the same as volume. Every individual system requires a certain volume of air, or CFM (Cubic Feet per Minute), to effectively pick up the abrasive and flow it out the other end. Once you have the volume, than you can worry about the pressure your abrasive works best at. In addition, you must match your nozzle opening size to the amount of CFM your compressor can put out (you can find charts online). In general, purchase the largest compressor you can afford, you wont regret it :-) If your stuck...To make the best of an undersized system, you may consider the following: decrease your nozzle size, take breaks while blasting to let the compressor catch up, choose light abrasives that are easy to pick up. Moisture in the system: The second most common blasting problem is moisture in the system. Every running compressor condenses the moisture that naturally occurs in the air and introduces it into your air tools, abrasive, or other operation. It is a constant battle to combat this, especially in humid environments. If you feel like the gun is "surging" in your hand, or clogging, you probably have moisture. Additionally, if your compressor is undersized, and continually runs while you are blasting without stopping, it is constantly heating up, which in turn condenses moisture at an even higher rate. Solutions to this problem include having a large enough system that it is not running all the time without a break, refrigerated air coolers or dryers (expensive), moisture removal filters (inexpensive), and various types of home made copper or metal snakes with drains, bolted to your wall (google it). Most people are not going to purchase a refrigerated air dryer, but if you are handy, you can make a "snake" of copper with at least 50 linear feet (the more the better) of pipe and bolt it to your wall right next to your compressor. As the air runs out of the compressor, it will first travel through this snake and cool rapidly as it touches the metal. A higher percentage of the moisture will then collect at the bottom of these pipes, rather then travelling on to your mainline and tool. Additionally, there are many affordable moisture removal filters on the market. About our listings: Shipping: We typically ship within one business day. The product than takes at least 1 to 3 business days to arrive, barring any problems in the air or on the road. About us: We are a small family company. A great deal of thoughtfulness and precision go into everything we do. We supply our abrasives in different quantities, so you can choose the right amount for your needs. Problems: Yup, I'm a human too. Every once in a while I mess up, just like you. So don’t be a mister angry pants turkey face. If I cause a problem, I will fix it. We want your business forever. Our listings, adds, pictures, and write-ups: The stuff we write is ours, don't steal it, do your own work. Pictures: We always use pictures of the actual product in our add, but not necessarily the quantity. 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