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Post by stardiamond on Nov 22, 2019 14:13:01 GMT -5
I dressed my blade and was making the third cut on some hard material and the cutting slowed down. I hate to have to remove the rock, re-dress and then put the rock back in vise. Since I am cutting with the rock glued to a 2x4, I was wondering if I could put the dressing stick between the board and the vise. I would do one dressing cut before each rock cut. I usually dress with the stick horizontal. It would seem that it would cut the same amount of the dressing stick no matter the orientation.
Comments?
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Nov 22, 2019 14:48:06 GMT -5
You will wear out your blade.
Sounds like oil needs filtering/changing.
What blade are u using? What lube?
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Post by stardiamond on Nov 22, 2019 15:20:41 GMT -5
Relatively unused 14 inch MK301. The oil is whatever Covington recommends for the saw. I've had a lot of conversations with them and they recommend frequent dressing on hard material. I do 3-4 cuts and then two dressing cuts. So I would be doing 50 to 100% more dressing cuts with this a approach.
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NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Nov 22, 2019 15:34:40 GMT -5
Relatively unused 14 inch MK301. The oil is whatever Covington recommends for the saw. I've had a lot of conversations with them and they recommend frequent dressing on hard material. I do 3-4 cuts and then two dressing cuts. So I would be doing 50 to 100% more dressing cuts with this a approach. When I got my saw, it had a cheap chineseium crimped blade with 50% left. I cut literally hundreds of cuts without a single dressing. I had the saw stall, dressed it and still stalled. Changed the oil and now still hundreds of cuts without a dressing. The oil lubricates and protects well. Never take dressing advice from a blade dealer. Haha To check for exposed diamonds run your fingernail along the cutting surface. You will easily feel exposed diamonds. If none are felt, dressing is in order. If you feel them, try cleaning/changing the oil. No way on Earth you need to dress so often. The Covington saw has a slip clutch in it. This may need adjustment also. I don't know how to do this. My Covington saw never cut agate well. So, I only use it for the various limestone's. I blame the clutch for this. |
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Post by stardiamond on Nov 22, 2019 15:59:09 GMT -5
I recently replaced the clutch because I ruined it because I didn't understand it. I do now and have it properly adjusted. I could change the oil but I haven't used the saw that much. I didn't have a lot of rough and when the clutch quit working I couldn't use it all. The saw did a lot of cuts with out dressing with Morgan Hill but this stuff is very hard. When working it, It is harder and more difficult than Montana agate.
My wife bought the saw for me in 2009 and I didn't uncrate it until 2014 when I retired.
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Post by victor1941 on Nov 22, 2019 17:07:02 GMT -5
Stardiamond, I solved a similar problem by backing off and disengaging the rock and hand cutting the dressing stick. I glue mine to a 2 x 4 x 6" and clamp in the vice or hand hold if necessary. I would also check the tip of the blade to make sure it is flat and not rounded because dressing does not increase saw kerf.
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Post by hummingbirdstones2 on Nov 23, 2019 9:13:44 GMT -5
Had to back the vise up on a 10" the other day and dress a blade by holding the dressing stick in hand. Was cutting some metallic material.
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