isellwood
starting to spend too much on rocks
Member since July 2006
Posts: 119
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Post by isellwood on May 13, 2012 20:16:33 GMT -5
I picked up an old lortone LST12 saw at an estate sale. Everything runs good but the blade as very slight wobble in it. It is a notched blade. I have cut a few slabs and can see ridges in the slab.Questions, is there a correct direction to spin the blade, do you think the wobble is making the ridges, and do I need a new blade?
Thanks for your advice Pat
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Post by deb193redux on May 13, 2012 21:58:38 GMT -5
the wobbel of a 12" is a bit more than a 10". it could be OK, depending on what you mean by slight.
I recommend a 303c blade. mine cuts w/o any ridges.
check the pulleys to see what speed you are running at. my used saw had been changed to run fairly slow. I had to change pully and speed it up.
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Post by jakesrocks on May 13, 2012 22:08:11 GMT -5
Looking at the front of the blade, it should be spinning down towards the rock you're cutting. Take the nut, flange washers and blade off and clean them and the threaded end of the arbor real good. Then put everything back on. Don't over tighten the nut. Just snug it enough that you can't turn the blade while holding the arbor. It's possible that the person who put the blade on trapped some dirt or rock chips between one of the flange washers and the blade. This would cause it to wobble.
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Post by Rockoonz on May 14, 2012 0:02:43 GMT -5
On a rock saw blade total side to side runout should be no more than 1/2 of the saw width. A lot of the old style saw blades or the thin cheap chinese blades don't get along with the small Lortone saws too well, better to use a 303c.
Lee
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Post by johnjsgems on May 14, 2012 8:20:00 GMT -5
The older notched rim (MK/BD) blades were non directional. Try dressing the blade. You will get a smoother cut with a "sharp" blade. Some of the Lortones feed too fast but a little wobble with a slow feed will cut pretty smooth.
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isellwood
starting to spend too much on rocks
Member since July 2006
Posts: 119
|
Post by isellwood on May 16, 2012 12:28:19 GMT -5
Thanks everone for the help. I took the blade off and scraped some of the paint and found that it is a Felker Dresser blade.
Pat
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Post by johnjsgems on May 16, 2012 14:19:43 GMT -5
Felkers were very similar to MK/BD/Star Diamond/HP. As long as it has not been dished to the point it lost tension it should cut. Cut through a dressing stick, fire brick or cement paver and see if cut improves.
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