rawkon13
off to a rocking start
Member since November 2010
Posts: 3
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Post by rawkon13 on Jan 12, 2011 10:16:17 GMT -5
:help: I recently changed the oil in my 14" saw, since there was a lot more sludge than oil in it. I also decided to change the belt and the blade. Now, I can't seem to cut much of anything in it with out the rock stopping the blade completely. I'm sure I'm missing something simple but for the life of me I can't figure it out. Any suggestions? the last time I had something like this happen, I only had to put in a new blade and things worked fine again. Tried two different brands of new blades and it still won't cut much more than an inch thick of material without binding. Thanks much, d
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Post by tandl on Jan 12, 2011 10:23:40 GMT -5
could be your belt slipping or pulley .
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rawkon13
off to a rocking start
Member since November 2010
Posts: 3
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Post by rawkon13 on Jan 12, 2011 11:04:50 GMT -5
yes, the belt is slipping, which is why I put on a new belt. The motor keeps turning but the blade end stops and so the belt just spins on that end. Please keep suggestions coming, as I'm completely out of ideas of what to check. My first thought was that the new blade wasn't any good, since I'd ordered several of them about 4 yrs ago and was just now using the last one. I thought maybe the glue or whatever holds the diamonds on had basically given out so I ordered a new one from Kingsly North. runs quieter, but still binds quickly, lol
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Post by tandl on Jan 12, 2011 11:19:52 GMT -5
you said you put a new belt on , you did`nt say it was slipping . now you say it is slipping . i would say your belt is the problem . My saw blade and feed are ran by belts running off one motor . Do you have a separate motor for your feed ? It is possible your feed is to fast . but if you didnt mess with that it should be the same . Im just concentrating on the belt for staters cause you did change it with a new one .
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Post by johnjsgems on Jan 12, 2011 13:13:20 GMT -5
Sounds like belt is too loose. If it slips when properly tightened it will really squeal and start to smoke. If it is slipping quietly it is too loose.
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Post by kap on Jan 12, 2011 13:14:09 GMT -5
Make sure the belt is the right one if it's not wide enough then it will bottom out in the pulley and it will slip. It should make contact with the sides of the pulley and not bottom out. Keith
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Post by Hard Rock Cafe on Jan 12, 2011 13:17:43 GMT -5
Agreed on the belt. Can you change the tension on it? My motor can be moved to adjust for belt stretching...
Chuck
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rockhound97058
freely admits to licking rocks
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Thundereggs - Oregons Official State Rock!
Member since January 2006
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Post by rockhound97058 on Jan 12, 2011 13:31:54 GMT -5
Sounds likes a lortone saw to me! - But I also agree your drive belt is a bit loose. Or another possibility if you can change feed rates, it's feeding too fast and the the blades cutting more than it can chew and binding up.
I had the same thing happen a couple years ago on a saw I had and come to find out one of my name brand blades was screwed up. It was a new blade, but the center of the blade was thicker than the outer rim so as it cut, it was basically wedging itself into the kerf - So I took a 36 grit flap wheel on a 4" grinder - drained the oil and fired up the saw and started grinding metal.
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,472
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Post by Sabre52 on Jan 12, 2011 14:48:45 GMT -5
Yeah, your blade edge can get rounded off fairly quickly sometimes so that instead of cutting a square sided cut the blade is cutting a rounded wedge shape into the stone with the center deeper. This can bind your blade into the stone too as the blade center is cutting faster than the rounded edges. I know some folks grind or hammer down the center of the blade edge so it's square again and evenly presents diamond to the stone surface you are cutting.....Mel
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Post by tandl on Jan 12, 2011 14:57:03 GMT -5
I`m thinking feed is to fast now . if you have went through a few blades in four years , and just bought another, and it is still binding . I have mine slowed way down . have been using same for atleast three years . o yeah , your carrige may be out of square to your blade is another possibility ...
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Post by roy on Jan 12, 2011 15:43:53 GMT -5
i would check the carriage as well if it is not square the it will bind
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rockhound97058
freely admits to licking rocks
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Thundereggs - Oregons Official State Rock!
Member since January 2006
Posts: 760
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Post by rockhound97058 on Jan 12, 2011 15:50:00 GMT -5
A quick way I "hone" in my blades when they act dull is take a larger bastard file - using the edge of the file, start tapping the cutting edge of the blade around the entire thing. What this does is mashes the metal away and exposes new diamond. I was taught this trick from Howard Dolph years ago... Works like a charm, however it's only a temp bandaid.
I agree though - you mentioned you've gone through several blades in a short period of time. Something isn't right - A blade should last for years. Heck I cut nothing but agate and Thunderggs and I've had the same blade on for 6+ years and still has plenty of life. Then again I cut everything on the slowest setting for a feed rate.
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rawkon13
off to a rocking start
Member since November 2010
Posts: 3
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Post by rawkon13 on Jan 12, 2011 16:03:24 GMT -5
Thanks for the suggestions everyone. I'm also of the opinion that my feed is just a bit too fast. The saw is not any name brand, unfortunately. It was made, or at least sold, by a rock shop in Salem Oregon and probably about 30 yrs old or so. The carriage is fed by a small motor and when I first got the saw from my dad about 10 yrs ago, that motor needed replaced. The only motor like it I could find is a rotisserie motor and I have no idea how to slow that down. But again, thanks for the suggestions--everything helps! T
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Post by roy on Jan 12, 2011 21:26:54 GMT -5
puy some pics of you saw and feed motor and someone will have the answer your lookin for
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Post by jakesrocks on Jan 12, 2011 22:14:38 GMT -5
Something that hasn't been mentioned. When you changed your blade, did you clean the flange washers real good ? Just a little bit of grit on a washer can throw the blade off, and cause binding. Don
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rockhound97058
freely admits to licking rocks
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Thundereggs - Oregons Official State Rock!
Member since January 2006
Posts: 760
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Post by rockhound97058 on Jan 13, 2011 0:42:00 GMT -5
Back in the 50's to late 60's there were many "ma & pa" type shops building saws. There were several made in Portland, Oregon... The very first saw I had was a 18" saw called a Royal unit it was sold by Jenkins Lapidary. It also used a small electric motor which drove the worm gear for the vise. Not sure right off top of my head where to find the replacement - but I think the BBQ motor should work great for you. I'm sure it's possible to wire a rheostat inline on the motor and adjust the speed that way?
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Post by johnjsgems on Jan 13, 2011 9:34:34 GMT -5
Most AC motors will burn up with a rheostat as they lower voltage to the motor. The rotisserie motor is used by most manufacturers but I believe there are several rpm choices. Trick would be finding correct rotation/rpm for the saw.
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Post by sandsman1 on Jan 27, 2011 5:45:12 GMT -5
how bout cleaning the pulleys maybe they have oil on them
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