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Lapidary / Gemstone Community Forum
February 17, 2019, 02:16:25 pm
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Saw Blades - 6" - BD-301 or BD 303?

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Author Topic: Saw Blades - 6" - BD-301 or BD 303?  (Read 265 times)
James D. Farrow
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« on: July 26, 2015, 07:12:53 am »

Hi!

From what I could find searching, the Barranca Diamond blades seem to be used by many folks here.

There was also some discussion on the BD-301 versus the BD 303.

One cuts faster. The other cuts better.  dunno

Opinions on which one is better?  Which one you prefer?  Which one lasts longer?

Thanks!

James
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James D. Farrow
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"No more trains will be sold once the magazine leaves the station"

James D. Farrow
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« Reply #1 on: July 26, 2015, 10:41:46 am »

Also, I have seen that MK Diamond also have the same numbers for their blades - MK-301 and MK-303.
Seems they are related/same as BD.

On them it says "use with oil coolants only" but some people say they have used water.

James
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James D. Farrow
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johnjsgems
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« Reply #2 on: July 26, 2015, 02:24:08 pm »

BD is lapidary division of MK.  Same blades, same part numbers.  The 6" 301 is only available in .025" core thickness.  The 303C comes in .014", .020", .032", and .040".  303C is continuous rim with high carbon tool steel core.  The 301 uses same core but rim is 20%-25% taller so should last longer.  It also has an interrupted edge with wedge shaped notch like segments around the rim.  The notches clear as they cut so 301 will cut hard material better.  Both give same smooth cut.  In 6" size either blade will do a fine job of trimming slabs.  Most people buying the 6" 301 either want it for the .025" thickness, extra tall rim, or because they use 301 blades in larger saws and like the performance.  They were supposed to change their literature to "oil coolants preferred" since steel core will rust if left in water.  Both blades in that size cut well with water.  Just drain after use and dry blade. 
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James D. Farrow
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« Reply #3 on: July 26, 2015, 03:23:40 pm »

Thanks!

Will put the 301 on my list for when I need to get another blade.

James
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James D. Farrow
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mick B
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« Reply #4 on: July 26, 2015, 04:20:31 pm »

I have used both MK and BD, for the last 3 years I have been using the Ukam smart cut, I ran all these brands on the same materials and found the Ukam smart cut HEAPS better, straighter, smoother, never had any trouble with blade buckling or uneven wear, I think they are slightly more expensive but not much, and are still used by the aerospace industry, they have a deeper sintered diamond depth, 7 mm on the 10 in blade compared to 5 mm for the others.
 
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vitzitziltecpatl
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« Reply #5 on: July 26, 2015, 11:09:28 pm »

Thanks for the evaluation of the three blades, Mick. Good to hear from someone who tested on the same materials.
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