nvkermit1512
starting to spend too much on rocks
Member since April 2014
Posts: 143 
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Post by nvkermit1512 on Sept 11, 2016 20:41:13 GMT -5
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Post by Psycho on Sept 12, 2016 19:55:22 GMT -5
Mk 303 professional blade. Runs 65-70 bucks depending on distributor. I love mine in my 7 trim saw.
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nvkermit1512
starting to spend too much on rocks
Member since April 2014
Posts: 143
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Post by nvkermit1512 on Sept 12, 2016 21:25:05 GMT -5
Thank you very much for the advise, I will check them out.
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Post by Rockoonz on Sept 12, 2016 22:20:12 GMT -5
Unless you slowed the arbor speed down on your tile saw you don't want to use a lapidary blade.
A 7 inch 303 should run between about 1600 and 1800 RPM.
A MK 225 hot dog blade will probably suit you better at about half the price if you shop.
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nvkermit1512
starting to spend too much on rocks
Member since April 2014
Posts: 143
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Post by nvkermit1512 on Sept 12, 2016 22:24:27 GMT -5
Thank you for the info
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Post by greig on Sept 12, 2016 23:13:53 GMT -5
I have been cutting quite a few rocks with my tile saw and am on my 3rd blade. I am pretty happy with the current one from Lowes. I went outside to get you the name and the green paint has worn off, so no luck there. The real reason for the comment is the statement that cutting is slow. When I have had that trouble, the rock was rubbing on something as I pushed it through. My saw looks a bit different and I hang up with a larger rock on parts of the arm. I just thought I would put it out there...
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nvkermit1512
starting to spend too much on rocks
Member since April 2014
Posts: 143
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Post by nvkermit1512 on Sept 13, 2016 21:49:05 GMT -5
Thanks for the info. I have raised the "arm" up high enough for me to see the blade as it goes through the rock, it got slow even on thin pieces
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nvkermit1512
starting to spend too much on rocks
Member since April 2014
Posts: 143
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Post by nvkermit1512 on Sept 13, 2016 21:56:15 GMT -5
Unless you slowed the arbor speed down on your tile saw you don't want to use a lapidary blade. A 7 inch 303 should run between about 1600 and 1800 RPM. A MK 225 hot dog blade will probably suit you better at about half the price if you shop. I see what your saying about arbor speed. This motor turns a 7" blade at 3300 rpms and can cause it to glaze over (researched it after you brought it up) so I am thinking of using an AC 0-220V 50A Pulse Width Modulator PWM Electric Motor Speed Controller Max 10000W and that should slow the rpms (without any damage to motor) to about 1650 rpms and even slower if I needed to. Would this be a correct assumption? |
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Post by johnjsgems on Sept 13, 2016 22:22:16 GMT -5
BD or MK (same) 303C .050" will work fine. You may need to dress blade more frequently at that speed. Hot Dog a good choice too but thicker blade.
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Post by rockjunquie on Sept 13, 2016 22:53:53 GMT -5
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Post by Peruano on Sept 15, 2016 17:56:08 GMT -5
Your use of the clamp as a vice is elegant. The mk 225 recommended is a great alternative and will last a long time. You trade a bit of width for durability and as a porcelain blade it was made to run at tile saw speeds (but on thinner cuts). Lowes sells the mk 225 as well as other blades order on line.
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Fossilman
Cave Dweller 
Member since January 2009
Posts: 20,723
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Post by Fossilman on Sept 16, 2016 9:42:30 GMT -5
As you look for these blades,use Amazon.com...... Same blade,but save lots of cash!!
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Sept 16, 2016 10:21:26 GMT -5
I have to also add props for the clamp/vise setup. That is an awesome idea!
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nvkermit1512
starting to spend too much on rocks
Member since April 2014
Posts: 143
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Post by nvkermit1512 on Sept 16, 2016 18:44:32 GMT -5
Thank you everyone for the advice. I went to the manufactures web site and have ordered and received MK-303 7 x .030 x 5/8 for $56 ($5 shipping). On their website they say their MK-301 Gemking needs oil cooling and the MK-303 Professional " Designed for use with a water soluble coolant". Thanks for the thumbs up on my use of the wooden hand screw clamps. I knew I wanted something that could safely hold the stones (without crushing them) but have a flat surface to be able to "slide" it through the blade. It made cutting a lot less stressful and if I had to step away for a minute I knew I could continue cutting without throwing the "cut" off. I am now just waiting on the Pulse Width Modulator to show up. Once I have that installed, hopefully, I will be able to get back to slicing up some stones.  |
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