Saw not cutting larger rocks

dbrealityrocks fully equipped rock polisher Member since February 2010 Posts: 1,084	Saw not cutting larger rocks May 5, 2020 6:00:51 GMT -5 via mobile Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by dbrealityrocks on May 5, 2020 6:00:51 GMT -5 It was cutting fine then next cut stopped half way through. I ran a grinding wheel to sharpen, no difference. It will cut a 6" x 3" horizontal but if I stand it up no go. I'm using an old 18" HP.
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Peruano
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Saw not cutting larger rocks May 5, 2020 7:10:30 GMT -5 RocksInNJ likes this

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Post by Peruano on May 5, 2020 7:10:30 GMT -5

There is a lot more saw blade in contact with the rock for that rock in its vertical position (once the cut has proceeded). That can mean added friction and work for the blade and lubricants. I'd dress the blade with something softer, or the standard alternatives and then consider how to determine what else could be causing it to stop. Is it binding, is the belt slipping or the feed mechanism loose. Sometimes a rock slips in the vice and stops the blade as it drifts out of the line of feed.

Tom
Combining bicycles, trailbikes, hiking, and rockhounding as a justification for enjoying the fresh air of New Mexico.

hummingbirdstones2 In Memoriam Vince A., 1958-2023 Member since August 2018 Posts: 1,461	Saw not cutting larger rocks May 5, 2020 8:01:31 GMT -5 Fossilman and RocksInNJ like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by hummingbirdstones2 on May 5, 2020 8:01:31 GMT -5 Sounds like a binding issue to me. Only because I've had that happen on smaller saws if the vise raised up during the cut.
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stardiamond
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Saw not cutting larger rocks May 5, 2020 12:39:22 GMT -5 AzRockGeek, arghvark, and 2 more like this

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Post by stardiamond on May 5, 2020 12:39:22 GMT -5

An obvious lesson I learned recently; dirty oil. My saw kept binding despite dressing and adjusting the clutch. I used a stainless steel wok ladle to scoop out a gallon of muck from the bottom and added a gallon of fresh oil. My saw now cuts like a dream.

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Post by dbrealityrocks on May 5, 2020 6:00:51 GMT -5

Post by Peruano on May 5, 2020 7:10:30 GMT -5

Post by hummingbirdstones2 on May 5, 2020 8:01:31 GMT -5

Post by stardiamond on May 5, 2020 12:39:22 GMT -5

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