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Post by greig on Feb 19, 2021 23:05:45 GMT -5
I am having an awful time with Google or the search tool in Amazon, Walmart and other places I have tried. What I am looking for is replacement diamond disks for an 8" flat lap that stick to a rubber disk for pre polish. ie. the pads used in the process between the hard diamond disks and the polishing pads. Second question, what grits do you use? I think I have seen 600 and 1200 with one fellow and 325 and 600 for another. Thanks in advance.
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Post by Rockoonz on Feb 19, 2021 23:14:21 GMT -5
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Post by greig on Feb 19, 2021 23:20:25 GMT -5
Thanks. I will try that. I had used pre-polish, smoothing, sticky, peel and stick, disk and pad and every combination I could think of. Was getting frustrated.
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Post by Rockoonz on Feb 19, 2021 23:28:17 GMT -5
I have also heard them called toppers.
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Post by hummingbirdstones on Feb 19, 2021 23:43:51 GMT -5
greig try PSA diamond toppers
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Post by jasoninsd on Feb 20, 2021 1:18:59 GMT -5
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Post by manofglass on Feb 20, 2021 9:12:07 GMT -5
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hummingbirdstones2
fully equipped rock polisher
Vince A., 1958-2023
Member since August 2018
Posts: 1,461
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Post by hummingbirdstones2 on Feb 20, 2021 9:46:18 GMT -5
greig - Everyone has their favorite PSA discs, but I believe you might like the Eastwind brand resin discs.
You mentioned pre-polish in your post, but I have this brand all the way up to 100,000 grit. They are smoother (slicker) than most other options, but that doesn't mean they are flimsy or less effective. They cut quite well, and are flexible enough to conform nicely to your dome profile. Almost like cheating, but really just using the best tool for the job, right?
These discs have also held up well for me. Like anything, just don't let edges or excessively irregular stone surfaces dig in. I don't use heavy pressure or high RPMs with these and they cut fine. You know the drill - drop back a grit or two if some additional material needs to be removed instead of staying on a finer grit and trying to force it.
They probably still let you mix different grits to get their quantity (4+) discount. At least I hope they do - I haven't replaced any in a few years.
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rocksgoblue
off to a rocking start
Member since February 2021
Posts: 3
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Post by rocksgoblue on Mar 8, 2021 19:49:42 GMT -5
hummingbirdstones2 - Is there a difference between the Kingsley North Eastwind diamond discs, and Kingsley's cheaper "Diamond Smoothing Discs" in different colors? Besides the fact that it looks like the cheaper discs have a center hole. If I want to flat lap using "full face" (i.e. no-hole), will having that center hole create any performance problems on larger flats (i.e. slabs, nodule halves, saw heels)? I need to buy a whole set of PSA diamond smoothing discs for my large flats; should I avoid the ones with center holes (cheaper!), or won't I notice any difference?
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hummingbirdstones2
fully equipped rock polisher
Vince A., 1958-2023
Member since August 2018
Posts: 1,461
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Post by hummingbirdstones2 on Mar 9, 2021 8:46:15 GMT -5
All I can say about using disks with center holes on "no-hole" equipment is that the outer edges can cause scratches. I would imagine the inner edges around the holes could do the same thing. I've accidentaly run a cab over the outer edges and had to go back down a grit to fix them.
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