Die Grinders

Home Improvement No Responses »
Sep 222010


In its most simple form, a die grinder is simply a handheld air tool which holds a grinding stone on an axle, and spins it at high speed in order to clean or smooth small areas with a high level of accuracy. Die grinders use compressed air to drive their rotation, and have a great deal of control that allows them to apply a different amount of pressure depending on the job being carried out. This means that with a good quality tool, and a bit of practice, you will be able to get a perfect finish every time you start.

Because they are compact, powerful, and every flexible, die grinders are a useful addition to any tool kit. A wide variety of different grinding discs and stones can be fitted onto the grinder in order to carry out a whole host of different jobs.

Whether you want to use a precision grinding stone to smooth off the burrs around the edges of a piece of metal to get a nice smooth finish, or want to be able to round off a piece of wood as part of a project, a different finishing tool is able to be fitted to the die grinder in order to make it perfect for the job at hand. With its ability to offer a high level of precision to any job it is needed for, and the level of control that can be applied to how much power is delivered by the air tool thanks to an adjustable power switch, a die grinder is able to carry out a huge range of tasks well.

Able to get into small, tight areas to deliver a highly targeted application of power in order to carry out precise adjustments, or alternatively, by using a larger grinding disc to smooth a wide area at one time, the flexibility of a die grinder is one of the main reasons why they are so popular.

There is a huge range of different die grinders available to suit all budgets. From occasional use through to everyday reliability, you can find the perfect die grinder for you. Prices start from less than $30 for a basic cheap die grinder, and go up to more than $100 for a high end model, meaning that there is something to suit every budget available.

The Mountain MTN7318 1/4 Rear Exhaust is an entry level air tool that comes from one of the top manufacturers. It offers many features that are usually only available in more expensive air tools, and has enough power to carry out most day to day tasks that you may need it for. The die grinder will spin at up to 20,000RPM, meaning that it is able to generate high power and get very good and fast results. It is also comfortable to use over longer periods of time thanks to the addition of a ribbed rubber handle that allows it to sit easily in the hand for maximum control.

A slightly more expensive option that is very popular with many buyers is the Astro Pneumatic AST1261 air powered die grinder. This tool features an innovative 30 degree bend in the structure that allows it to be even more comfortable in use. It is high powered, and allows for a more ergonomic position to be adopted when in use. This makes it one of the most precise die grinders available.

When you buy a die grinder, it is also important to get a full selection of accessories. A comprehensive set of grinding discs and stones will allow you to tackle a wide range of jobs confidently, and mean that you do not need to be afraid of getting incompatible tools at a later date.

By: Jason Miller

About the Author:




Jason has been in the construction equipment and industrial sales business for over 10 years. He owns and operates Red Hill Supply to better serve the automotive and industrial industries. – Air Compressors



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Posted by GBoyd at 7:16 am Tagged with: , ,

What to Look For in an Angle Die Grinder?

Home Improvement No Responses »
Sep 012010


Today’s technology offers many choices for angle die grinder. Hence there is not only varied choice but more confusion too to the buyer. Let’s see what are the criteria which make a best choice for every individual.

Firstly, make sure the major utility of the unit for you. Decide whether you would use it with metal or wood or plastic. Though this doesn’t restrict the re usability with another material, it is always best to decide the end user first.

Secondly, the effort by the user. Typically women users can prefer some light weighted ones as their most priority. A soft handle to add with gives less fatigue even when used the whole day. Angle die grinder comes in varied sizes from that of a hand held to a bench top model. An important criterion is safety which could be achieved by a lock off throttle model.

Thirdly, the comfort. Grinder parts like the exhaust remove the spurs from the surface you are working with which is usually at the rear so that it doesn’t disturb the worker. A swivel rear exhaust removes the air faster away from the work surface.

Few designs allow side or front exhaust too and the choice is based on the convenience of usage. You can probably see a demo of how you will work on the surface like standing or leaning on a bench or sitting down and choose the one most appropriate for you.

Some angle die grinder come in the size of a marker pen, commonly referred as micro die grinders which are portable and handy. They perform similar operations like grinding and finishing of metals like aluminum or iron molds, polishing of ceramic surfaces, smoothening of welded surfaces etc. However they are best used for removing sharp burrs on higher precision parts.

Most grinder parts are steel made so that they have longer life than plastic or wood, but not of iron as they may become heavy. Also the right angle design makes it most comfortable for very tight spaces.

Speed at which angle die grinder work is measured in rotations per minute (RPM).This is chosen based on the type of material they are going to be used and their purpose. Typically 10000RPM or lesser is used for fine grinding and smoothening of surface. RPM between 10000 and 20000 is used for making rough finishing and little buffing. To deal with metal like cutting or smoothening of welded metal surfaces, RPM of more than 20000 will be required.

By: Leonard Rigsby

About the Author:




AngleGrinderHowTo.com has the answers to all the questions that you were afraid to ask about Grinder Parts! To make sure that you will not have to settle for anything less than the full story on Angle Die Grinder [http://www.anglegrinderhowto.com/angle-die-grinder-models-for-all-uses.html/] and related topics, check out the site right away!



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Posted by GBoyd at 2:03 am Tagged with: , ,

Tips and Tricks to Polishing Stainless Steel

Business No Responses »
Jun 072009


This is what separates the men from the boys, a finished product from an unfinished product. However ,this also takes a little bit of finesse.

I have spent many years polishing stainless steel. There are several different types of finishes. The ones that I will be talking about are your number 4 finishes. Which is basically a finish that comes from the mill that has a grain to it. It is easy to duplicate if you have the right finishing tools. You can see this type of finish when go in the kitchen of a restaurant.

Lets talk about the tools that are required. One of the first things you will need is a variable speed grinder with a drum wheel or a pneumatic wheel. A die grinder with different carbide burrs. And a finger file, which is basically a miniature portable belt sander. These are the basic tools that are required to finish stainless. There are some other specialty tools that I will talk about later on.

Now lets say you just welded a stainless steel sink in a table or better yet you just welded up a corner seam on a dish pit table. I will go over both of these because your process will be slightly different. Whenever you are finishing an inside weld in a corner the first thing you have to do is to smooth it out. Restaurants don’t like to see any welds because bacteria can grow in the ripples and it’s easier to clean. Everything has to be smooth that will be in contact with water or food. Now the first thing that I do is I take my die grinder with a small round carbide burr on it and I lightly shape the weld. I don’t spin it at the fastest rpm as this will burn up your bit. I just want to take an ever so slight amount of material out to make it smooth. Pay special attention to the edges of the weld because as you grind it you will see a line. This has to be blended in. I put minimal pressure on the bit and a low rpm. Once I have shaped it where you can’t see the edges of the weld or any ripples I then switch to a cartridge roll. This is basically a roll of sandpaper that has been rolled into a cone and glued. You have to have an arbor that it will screw on to. I use a 120 grit to smooth out the roughness from the carbide burr and to blend it in. I stay in the corner. The less you stray the less you have to clean up. You just want to work on the weld and nothing else. These cartridge rolls don’t last long. They are consumed at a very fast rate, especially if you are really spinning these at fast rpm’s. After the cartridge rolls the weld is looking pretty good. It should be smooth without any gouges in the base metal. The next thing I do is I put on a fresh cartridge roll and then I take a fine scotchbrite hand pad and I tear off a little bit and wrap it around the cartridge roll. This is just used to blend the edges of the weld in and it puts a semi polish on it. That’s it, it’s that easy.

For the sink the method differs slightly. Again you just want to stay on the weld. The first thing is to take down the weld and shape it. For this I use a right angle grinder with an 80 grit sanding pad. I start in the middle of the weld and shape it. I then switch to a 120 grit pad and smooth it out, paying close attention to where the weld meets the base metal. I don’t want to have to do any extra finishing so I am trying not to let the grinder slip and hit any other part of the table. Once I have gotten it smoothed out I use a flap disc with a 120 grit sand paper. A flap disc is a series of sandpaper that on an arbor that rotates in a circle. This will actually be used to put a grain in the metal. You just want to stay on the weld. After this I switch to a drum wheel that has a medium scothbrite pad. This will smooth out the roughness from the sandpaper and begin blending the weld to the rest of the metal. Then I switch to a finer pad and do the same thing. This is a process that takes time and patience on your part. Do not try to cut too many corners when doing this as it will show. Everything shows on stainless. After you do a few of these you will probably pick up a few tricks of your own. Try different things! What works for me might not work for you.

By: Tibor Szalka

About the Author:




For more information on stainless and other metals visit my blog at
http://tibors-welding-helmet-reviews.blogspot.com



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Posted by GBoyd at 8:33 pm Tagged with: , ,
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