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Post by Bluesky78987 on Apr 8, 2017 11:01:34 GMT -5
I was just over in the faceting thread where QuailRiver suggested that a resin bonded lap might need to be dressed. Admittedly, I don't even know exactly what a resin-bonded lap is - or whether it is the same as diamond-impregnated resin or what. I'm curious because I hadn't heard of dressing anything other than saw blades before, but I'm newish at this so it wouldn't be so surprising I hadn't run across it. If it's possible, what is the prevailing wisdom on when and how to dress wheels and laps. I had only heard of dressing saw blades. I find my soft cab king wheels (resin right?) get really smooth feeling after awhile - I thought that meant they were worn out. But maybe they just need dressing? My hard wheels are starting to feel a little less aggressive than they used to also - can I revive them? Same with the resin Ameritool discs - can they be dressed back to life?
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Post by rockjunquie on Apr 8, 2017 12:07:08 GMT -5
Dressing involves using a stick of appropriate grit to reopen the gaps between the diamonds and to expose new diamonds. Yes, the resin wheels, soft wheels, can gloss over and be dressed. You can also rotate your wheels when they gloss over and that can help, too. I dress my nova wheels and my son dresses the flat lap. Just run the stick across the surface very briefly while running the wheels. Use a light touch. Doesn't take much. You can find the dressing sticks at Kingsley North among other places.
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Post by Bluesky78987 on Apr 8, 2017 18:03:58 GMT -5
No kidding! Amazing what the dealer who sells the wheels "forgets" to tell you. Hmph. Off to go research it! Thanks Tela.
Kingsley North seems to carry a 220 and a 400 (and a 24 but that one says it's for blades). Which one do you use on which wheel?
Also, by "rotate your wheels" do you mean reverse them so they turn the other way?
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Post by rockjunquie on Apr 8, 2017 19:42:24 GMT -5
No kidding! Amazing what the dealer who sells the wheels "forgets" to tell you. Hmph. Off to go research it! Thanks Tela. Kingsley North seems to carry a 220 and a 400 (and a 24 but that one says it's for blades). Which one do you use on which wheel? Also, by "rotate your wheels" do you mean reverse them so they turn the other way? Yes, take off the wheels and flip them over. It will make your wheels last a bit longer, too. I think I have a 220, but it's real aggressive. You might want to start with a 400 and see how you like it.
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Post by Bluesky78987 on Apr 8, 2017 20:05:25 GMT -5
Got it, will do, thanks!
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Post by spiceman on Apr 8, 2017 21:13:24 GMT -5
On regular or resin wheels are a mainly used for grinding metal, ferrous metals ( it sparks). If you ground nonferrous metals you can't remove much stock, the pores in the wheel get clogged up, the material expands and the wheel blows up. But thats metal,don't know about rocks on a grinding wheel. You need to find out, for sure before you try anything like that. Again, that's metals and I'm not sure about rocks. Better safe than sorry
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Post by johnjsgems on Apr 10, 2017 20:27:03 GMT -5
Diamond Pacific once told me not to dress their Nova wheels as the aluminum oxide particles can lodge in the Nova resin and contaminate the wheel. The resin goes on bumpy and rough and smooths out with use. They are not worn out until you see the foam under the diamond (black on DP wheels).
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Post by johnjsgems on Apr 10, 2017 20:40:03 GMT -5
Then again, Eastwind uses 220 AO sticks to break in their resin diamond belts finer than 3000. Your hard wheels are electroplated so after break in will be less abrasive than when new. All sounds normal.
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Post by Bluesky78987 on Apr 10, 2017 21:50:42 GMT -5
Hm. Ok, good to know, thanks John. I see the point about the bits from the stick getting embedded in the resin.
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Post by rockjunquie on Apr 11, 2017 6:25:22 GMT -5
I've been doing it for awhile now, with no problem. I think if you were to really push the stick into the wheel, it might be a problem, but to go over it lightly hasn't caused me any problems, at all.
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Post by Bluesky78987 on Apr 12, 2017 10:09:32 GMT -5
So I should use it when the wheel starts to look shiny over much of its surface? (Like me 1200 wheel looks now?)
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Erich
spending too much on rocks
Member since November 2015
Posts: 411
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Post by Erich on Apr 12, 2017 10:18:17 GMT -5
Good questions. I was also wondering when the soft wheels are considered worn. I just assumed they wouldn't do their job any longer. Rotating seems like a great idea when the time comes.
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