Mark K
Cave Dweller
Member since April 2012
Posts: 2,564
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Post by Mark K on Feb 5, 2023 22:33:47 GMT -5
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Post by jasoninsd on Feb 5, 2023 22:36:00 GMT -5
THAT COULD HAVE GONE VERY BADLY!!
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,564
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Post by Mark K on Feb 5, 2023 23:07:23 GMT -5
Well, I got the rim perfect but the body is so soft that I can't give it a gentle enough touch to true it enough. The metal on the body is surprisingly soft. Good thing it was only a green blade. I put the one Tim had in there in the first place back on and it is cutting again. The belt didn't get smoked again like it did the other day(tried to cut something too long for the saw)But it was spinning on the pulleys. Caught it in time though.
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Post by Rockoonz on Feb 6, 2023 1:16:44 GMT -5
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Post by hummingbirdstones on Feb 6, 2023 9:41:13 GMT -5
Geez Louise, that's scary. BE CAREFUL!
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,564
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Post by Mark K on Feb 6, 2023 22:33:53 GMT -5
OK. I figured out what happened. I was standing there keeping an eye on things after it locked up and almost ruined another blade and it locked up on a small rock I had cutting. I stopped the saw and when I pulled the carriage back, the entire carriage dropped down about an 8th of an inch. Once the saw gets about 3/4 inch into the rocks, it is lifting up and binding the blade. Then the auto feed keeps pushing the carriage forward smashing the blade. I can wiggle the carriage by hand and see the movement. Now the saw is deadlined until I can figure out how to remove the slop.
Anyone have any ideas?
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Post by Rockoonz on Feb 6, 2023 23:53:45 GMT -5
Lifting the whole carriage or the crossfeed for the vice? It's the FranTom that was in your truck, right? The carriage has bronze bushings for the round rails, I have never replaced any but I can check with Matt sphereguy on where he orders them from if that's what you need. The cross feed has thumb screws under the vice front and rear, snugging them down will remove some movement on the cross feed, and they may also have bushings depending on the age of the saw I think. A dull blade or running the feed too fast could also be the issue. The belt to the 3 step pulley on the feed shaft in the rear should always be on the largest end for the slowest feed speed. I put a smaller pulley on the arbor for the feed to slow it down even more. A lot of the time with old saws the blade also runs too slow, the new blades run faster, your 18" should be 950-1200 RPM for sintered blades, so the arbor pulley should be 1.5 times the size of your motor pulley. For the cheap crimped blades 2 times is better. Have you seen the Highland Park Lapidary video on blade sharpening? It works wonders, but I take the blade off the saw to do it personally and use a hammer instead of a file, except I use the file if the blade is slowing down.
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Post by catmandewe on Feb 7, 2023 0:06:06 GMT -5
Looks like the rock came loose.
Might need to realign it after that.
Tony
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Mark K
Cave Dweller
Member since April 2012
Posts: 2,564
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Post by Mark K on Feb 7, 2023 0:12:55 GMT -5
Looks like the rock came loose. Might need to realign it after that. Tony That was my first thought too. I checked it and it was still tightly held and in line. I will have to check on the bushings. The thing that concerns me is that I have done around 100 cuts with no issues. It makes me wonder if there is not some sort of adjustment that went out of whack that I can adjust back into place.
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