rcadamssr
off to a rocking start
Member since January 2009
Posts: 5
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Post by rcadamssr on Jan 29, 2009 7:26:00 GMT -5
I have purchased a used highland park 10 inch slab saw and have no experience sawing. I will be attempting to cut obsidian.dacite,flint,chert,agate and other materials for knapping. I have several questions related to a particular saw blade as follows: Does any one have information on a diamond saw blade made by Great American with the following parameters marked on the blade: For granite,10" continuous rim, diamond parameters-size 45/50, 50/60;250dx2.5tx10.5wx16h,bonding hardness hrb 75,strength 25kg;inventory # DB3742. The blade is also marked with rotation direction arrow. The blade is 0.100 inch thick.
Can this blade be rotated? How should this blade be resurfaced on the cutting edge-by cutting a grind stone or other technique? What do the diamond parameters listed above and on the blade mean?
The person I purchased the blade from said the blade was suitable for cutting the types of material I was going to use-what do you think?
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JEFFD
starting to spend too much on rocks
Member since December 2004
Posts: 242
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Post by JEFFD on Jan 29, 2009 8:13:09 GMT -5
Sounds like a good heavy duty blade. If it will cut granite it will cut your other rocks as well. Obsidian is soft and should cut easily, eveything else is harder and a slower cut.
I wouldn't flip the blade until it isn't cutting.
I don't know what all the info on the blade is about, never got that much info on any of my blades.
Go cut rocks...have fun.
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Post by catmandewe on Jan 29, 2009 10:02:19 GMT -5
If the blade is marked with a rotational direction, you should not flip it. It is designed to run one direction only. You can use a dressing stick to dress it, but if you are going to be cutting obsidian, you might not need to dress it. The other numbers denote the diamond sizes and the kind of bonding agent hardness. If you do need to dress it, you can use a fire brick, as the main ingredient in a fire brick is silica carbide, it just grinds down the bonding agent to expose more new diamonds. Good Luck with it....................Tony
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Post by deb193redux on Jan 29, 2009 18:19:49 GMT -5
I agree granite rated means it can do agate too. But, 0.10 is about twice as thick as most 10" blades so expect to lose a lot of roct to the cut, and also see sludge build up twice as fast.
SOunds like a construction blade, so it may be stainless and suitable for water. Of course, oil will make the blade last longer.
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