In this Carbogrip tech video Effetto Mariposa showcases some ways to use Carbocut and some tips for home mechanics.
Effetto Mariposa® CarboCut is a revolutionary hacksaw specifically designed for the bicycle world it's the best possible tool you can have for cutting hard materials (ceramics, steel, titanium...) and it positively shines when it comes to working with composite tubes and parts.
Thanks to its grit edge tungsten carbide (WC) blade (metallurgically bonded tungsten carbide grit on a toothless metal blade), Carbocut won't damage carbon or Kevlar fibers, but smoothly cut through them.
What is Tungsten Carbide?Tungsten Carbide (WC) is a chemical compound containing tungsten and carbon. Like most ceramic materials (especially carbides) it has very high hardness, high thermal/chemical resistance but, compared to metals, it's very brittle.
Measuring its hardness on the Mohs scale (see **1, About the Hardness), WC rates 9 just below diamond (which rates 10 on the same scale, while titanium and steel rate respectively 6 and 6.5), making it a suitable material for cutting tools.
To reduce its brittleness WC is cemented: WC powder is "sintered" (see **2, About the Hardness) with Cobalt (a ductile metal) powder. The result is a metal-matrix composite, where cobalt (that enters the liquid stage during the process, unlike WC) embeds/cements WC grains. This composite has an higher shock resistance/toughtness than WC alone, preserving most of its high hardness.
**1: Mohs Scale (source: Wikipedia)Friedrich Mohs (January 29, 1773 - September 29, 1839) was a German geologist/mineralogist. In 1812, using relatively common minerals, he created a hardness scale that is still used today, called the Mohs' scale of mineral hardness.
The hardness of a material is measured against the scale by finding the hardest material that the given material can scratch, and/or the softest material that can scratch the given material. The Mohs scale is a purely ordinal scale. For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is almost four times as hard as corundum. Table 1.1 shows comparison with absolute hardness.
On the Mohs scale, a pencil lead has a hardness of 1; a fingernail has hardness 2.5; a copper penny, about 3.5; a knife blade, 5.5; window glass, 5.5; steel file, 6.5. Using these ordinary materials of known hardness can be a simple way to approximate the position of a mineral on the scale. Table 1.2 incorporates additional substances that may fall between levels.
**2: SinteringSintering is a process that takes place at both high pressure and high temperature and is ment to create solid parts starting from powders (usually ceramic, but a mix of ceramic and metals or metals alone can be used as well). Solid state sintering is when the heating temperature is below the melting point of the powders, liquid state sintering when at least one (but not all) element melts during the process. Cemented WC is obtained from liquid state sintering.
Miter Blocks, Cutting Jigs, and Saw GuidesThe 1.5mm cutting surface of the CarboCut blade passes clear in most cutting jigs. However, some of the popular miter blocks (such as the SG-6 Park Tool miter block) are a little to narrow. This isn't a problem as these narrow saw guides can be modified using spacer washers, as can be seen here on this page about Spacing a Cutting Jig for CarboCut.
CarboCut Saw Reviews:VeloNews: "The blade cuts on both push and pull stroke, providing more control and less vibration"
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