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Post by glennz01 on Sept 6, 2014 13:00:21 GMT -5
Well i got a segmented blade for my 16 inch rock saw that i am only going to be using for large hard rocks like jasper / agate. The blade is thick but works great... You can see the other cut mark from my other blade (a little before the 1 inch mark)... The largest one from my other blade that you see took over 45 min to get as far as you see... (i was pushing the rock into the blade also with my original blade with the swing handel) In total it took like 2 min for the rock to cut through.. i was not pushing on the handel... if i did i would think it would cut through in at least half that time This is one i cut with that blade for a test. The remaining rock i am going to clean up and put on my window... the end cut i might make cabs or do something with, not sure.
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Post by phil on Sept 6, 2014 16:05:35 GMT -5
Pic of your new blade?
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Post by glennz01 on Sept 6, 2014 16:42:01 GMT -5
These are what they look like... I was able to get my arbor to work with the other saw blade by sanding down the arbor hole a little (not sure how much as it was not visible to the eye) I'm going to try the notched blade soon. Cost $180 Cost $90
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Post by phil on Sept 6, 2014 19:42:36 GMT -5
Cool. You buy those from John? That green one, is it a sintered rim or crimped rim. Can't tell by the pic.
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Post by kap on Sept 6, 2014 20:29:16 GMT -5
Just remember the harder you push and the faster you cut the faster you will wear out the blade. That is why power feeds go slow.
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Post by glennz01 on Sept 6, 2014 21:04:28 GMT -5
Yeah, all of those are from Johnson brothers, With these blades i will simply be using the gravity system... I have yet to try the green one as it did not come with an arbor bushing so I had to make mine work (and hope they send me one)
How snug should the arbor bushing be? being that it is a 1 inch hole I'm tempted to go buy a hole cutter and just take some washers that have a 1 inch rim on them to make an arbor if mine doesn't work.
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Post by phil on Sept 6, 2014 21:22:07 GMT -5
Yeah, all of those are from Johnson brothers, With these blades i will simply be using the gravity system... I have yet to try the green one as it did not come with an arbor bushing so I had to make mine work (and hope they send me one) How snug should the arbor bushing be? being that it is a 1 inch hole I'm tempted to go buy a hole cutter and just take some washers that have a 1 inch rim on them to make an arbor if mine doesn't work. Very snug. You can buy bushings at Harbor Freight cheap. They come in a multi-pack of assorted sizes, but they're so inexpensive it's no big deal to trash the ones you don't need. The pack is actuallycheaper than buying just one "special" bushing at a lapidary store. Don't try and make your own, you'll end up with wobble and trash your new blades.
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Post by glennz01 on Sept 6, 2014 21:28:11 GMT -5
Ok, I'll see how the current one from my old blade works first
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Post by phil on Sept 6, 2014 21:30:09 GMT -5
You can reuse them many times....
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Post by glennz01 on Sept 6, 2014 21:37:39 GMT -5
If anyone has arbor bushings with 1 inch outside diamater and 3/4 inch inside diamater i may be interested depending on thickness just in case this one doesn't work.
I had to sand down the outside a little on my old blade arbor to get it to fit.. still fits my old blade...
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electricmonk
spending too much on rocks
Member since August 2011
Posts: 281
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Post by electricmonk on Sept 6, 2014 23:50:50 GMT -5
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Sept 7, 2014 15:11:59 GMT -5
Just remember the harder you push and the faster you cut the faster you will wear out the blade. That is why power feeds go slow. Yes,I think two minutes is a might fast for a cut like that...Might want to slow it down a tad..Thumbs up
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Post by glennz01 on Sept 7, 2014 15:33:42 GMT -5
Thats just with the gravity feed system, i can take the 2 lb weight off and let the weight of the rock alone pull it down (my large agate weighs 19 lbs) with my notched blade i'm guessing it would take a lot longer to cut.... Just note that this blade is basically continuous and the notches help cool it down greatly. One of the head guys at barranca diamond recommended this type of blade for the saw for large stuff. Granted i'm not too found of the 2nd hole in the blade... makes it vibrate a little bit... I can probably put a washer in that hole to lessen the vibrations
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electricmonk
spending too much on rocks
Member since August 2011
Posts: 281
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Post by electricmonk on Sept 7, 2014 15:55:50 GMT -5
Thats just with the gravity feed system, i can take the 2 lb weight off and let the weight of the rock alone pull it down (my large agate weighs 19 lbs) with my notched blade i'm guessing it would take a lot longer to cut.... Just note that this blade is basically continuous and the notches help cool it down greatly. One of the head guys at barranca diamond recommended this type of blade for the saw for large stuff. Granted i'm not too found of the 2nd hole in the blade... makes it vibrate a little bit... I can probably put a washer in that hole to lessen the vibrations That second hole is likely for blade 'truing' of balance. Wouldn't recommend filling it in without discussing it with Barranca first. Is it possible your arbor or flanges are slightly out of true? Just hazarding a guess, haven't used a blade like that myself.
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Post by glennz01 on Sept 7, 2014 16:41:52 GMT -5
That is from Johnson brothers... they come stock like that. I haven't seen other blades that have that 2nd hole with the same style... maybe its supposed to give the blade a slight wabble i donno... The arbor bushing and to the arbor shaft itself are all very snug (i think the bushing was press fit)
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Post by Rockoonz on Sept 7, 2014 19:34:59 GMT -5
2nd hole is usually found on concrete cutters and other commercial blades that have a pinned arbor to keep the blade from slipping.
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electricmonk
spending too much on rocks
Member since August 2011
Posts: 281
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Post by electricmonk on Sept 7, 2014 20:28:55 GMT -5
2nd hole is usually found on concrete cutters and other commercial blades that have a pinned arbor to keep the blade from slipping. Very cool, had no idea, makes a lot of sense though.
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Post by glennz01 on Sept 7, 2014 21:14:17 GMT -5
Thats what i thought... works great though still.
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