The Fein Multimaster is one of the best multipurpose power tools on the market, but many people find that Fein Multimaster blades are fragile and wear out very quickly. Even owners of rivals to Fein power tools, like the Bosch Multi-X, Rockwell Sonicrafter, and Dremel Multi-Max have the same complaint. The problem seems to be a side-effect of the special technology which gives these power tools their ability to make precisely controlled cuts.
The use of a special oscillating motor to vibrate the blades of these multimaster tools forces certain structural limitations on the blades used. Unlike the rotary motor of older or cheaper multipurpose power tools, the Fein Multimaster blade needs to be stiffer so that it can be vibrated at up to 21,000 oscillations per minute. This extra stiffness and other limits make the blades more fragile, wear out more quickly and more expensive to produce.
However, despite these design limitations, there are several ways to make the blades of your Fein power tools last longer. These tips also apply to other brands of multimaster tools. The first rule is to remember that Fein power tools are not meant for large volume jobs. For example, if you need to cut lots of wood, the Milwaukee Sawzall is almost always a better choice. Or if you need to cut a lot of holes in a lot of drywalls, you should be using the Bosch Rotozip spiral saw. Whenever there is a specialty tool available, use it, not the Fein Multimaster (Bosch Multi-X, Rockwell Sonicrafter, or Dremel Multi-Max).
The second important rule is to use the right blades or accessories. Too many people use only the carbide blade whenever they need to cut anything hard. However, sometimes you need something even harder - the diamond blade. And while the standard E-blade is a good general purpose blade, there are times you want to use the wood blade when you know you will not hit anything hard, or the HSS blade if you know there are a lot of nails or other metal bits embedded in the wood you are cutting. Fein makes many different blades for different purposes, so check the user manual or call their help line if you have any doubts.
The third rule is to use the right cutting technique. If you look at new power tool users (even regular power tools), they tend to apply too much pressure to the materials they are cutting. It almost seems like they are hammering a nail or chopping wood with an axe. Unfortunately, this is a habit that they never break. This is the sort of thing that quickly wears out blades. But when you look at a seasoned craftsman, whether amateur or professional, you can see that he is almost gentle in using his Fein power tool. He lets the multimaster blade work its own way through the material he is cutting, applying only enough force to control the direction of the cut.
These are the three simplest rules you need to remember to get more use out of your Fein Multimaster blades. Not only that, but it will place less strain on the motor of your Fein power tools.
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