? on mixing old and new wheels

larrywyland3
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? on mixing old and new wheels Sept 30, 2007 18:13:32 GMT -5

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Post by larrywyland3 on Sept 30, 2007 18:13:32 GMT -5

Hi I got what might seem like a stupid question.

I put on a new 280 and 600 nova wheels. I did the edge of a slab thing to break it in. When I move to the old 1200 it seems to take for ever to get the shine I expect (no visible scratches) before I move on. The 1200 is smooth, but has no black rubber showing yet. Is this to be expected? Should I change the 1200 at the same time as the rest? Am I just loosing my mind lol. I had this problem when I was using resurfaced wheel; so I switched to an all new set of novas and no problems until I needed the new 280 and 600. I changed the water. reversed the 1200 wheel, threatened it with no water and gave it the evil eye, but I still grind away forever. I am not all that patient; its all used up by the time I can get to my rocks.

Tony W has started giving rock gifts Ahh, Opal. I love the fire and flash! Member since May 2007 Posts: 3,435	? on mixing old and new wheels Sept 30, 2007 22:57:41 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Tony W on Sept 30, 2007 22:57:41 GMT -5 Ifigure the new wheels are just more agressive and the old 1200 is just to worn. Might be a 2000 now. But I'm new so I'm mostly guessing T

johnjsgems gets rocks for Christmas Member since August 2007 Posts: 6,959	? on mixing old and new wheels Oct 1, 2007 9:22:56 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by johnjsgems on Oct 1, 2007 9:22:56 GMT -5 I am guessing the new wheels need more breaking in. I'd cut a few more cabs before giving up on the 1200 wheel. John at JS Gems
	John at JS Gems www.jsgemslapidary.com

stardiamond
gets rocks for Christmas

Member since July 2007
Posts: 6,086

? on mixing old and new wheels Oct 1, 2007 11:40:14 GMT -5

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Post by stardiamond on Oct 1, 2007 11:40:14 GMT -5

Nova wheels are expensive and a lot of long time cabbers use belts instead. I cab as a hobby and my time is my most valuable asset. There's a point when a wheel still cuts but takes longer than you would like. I don't want to waste my time getting every last bid of usage out of a wheel. The biggest lesson I have learned about getting use out of wheels is not to move to the finer grit until you have done everything that needs to be done with the wheel you are currently working on. You get excessive wear on the finer grit wheel and sometimes you need to go back to the coarser grit. I have a hard time seeing the stone's surface when it is wet and although I try to follow a grinding/polishing pattern I miss spots. Stopping, drying and visually inspecting the stone before proceeding helps me a lot.

www.etsy.com/shop/stardiamonddesigns?ref=seller-platform-mcnav

stefan
Cave Dweller

Member since January 2005
Posts: 14,113

? on mixing old and new wheels Oct 2, 2007 10:05:24 GMT -5

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Post by stefan on Oct 2, 2007 10:05:24 GMT -5

What I was taught was that Diamond does not break down into progressivly finer grits (1200 becomes 1500 then 2000 then 3000) like SiC belts do- Diamond tends to slow down (cuts slower) as it wears (as you can attest to) I think you may be noticing how worn your 1200 is because of the speed at which the NEW wheels are cutting! If you insist on getting a new 1200 wheel- just send me your old one- I'm in no hurry (hahahaha)

I can't tell if thats some Gneiss Schist, or that Schist is Gneiss. All I know is don't take it for Granite