200% Pro CBN sharpening stones, combined bond,
Poltava plant of diamond tools
150 x 25 x 7 x 3
Length: 150 mm = 6 inch
Width: 25 mm = 1 inch
Thickness with blank: 7 mm= 0.3 inch
CBN thickness: 3 mm= 0.1 inch
Bonds were designed to be as wear resistant as metal bonds, but work more softly
1/0- 63/50 - BP50,resin bond for polishing
80/63-160/125 - BP08, copper-resin, wear-resistant, for grinding
>200/160 - BP05, copper-resin, for rough grinding
Trademark: Aldim.
ALDIM is trademark of my partner, who developed combined bond. This bond is manufactured by Poltava plant of diamond tools. And sold under few other well known brands.
Earlier we decided to promote combined bond, rather than brand to differentiate product. Now brand is also more or less known.Combination of bonds, which are combination of metal and resin. :)
These next generations stones were developed on the basis of our experience in sharpening business:
- solid support plate (thicker aluminum blank, 4mm);
- appropriate bonds (depending on grain size)
- combination of long life, delicate sharpening, and excellent performance of combined(metal-resin) bond.
- concentration 200% - higher productivity comparing to standard stones with concentration 100%.
Material / abrasive: CBN - cubic boron nitride.
CBN has the best cost/productivity ratio for processing of STEEL, comparing to diamond and misc. cheap stones. Due to it's high resistance specs, CBN can be used dry without lubricant. This makes CBN the cleanest of the available sharpening stones.
CBN stones are similar in qualities to Japanese wet stones, have have ten times longer working life.
CBN grit: any, please select from the list.
Please refer grain size conversion chart below, or just consider:
the finest grain size is 1/0 micron (fine polishing),
the coarsest - Grit 80 = 200/160 micron (rough grinding).
30000 grit = 0.5/0 μ - fine polishing
15000 grit = 1/0 μ - fine polishing
10000 grit = 2/1 μ - fine polishing
5000 grit = 3/2 μ - fine polishing
4000 grit = 5/3 μ - polishing
3000 grit = 7/5 μ - polishing
1700 grit = 10/7 μ - polishing
1500 grit = 14/10 μ - polishing
1100 grit = 20/14 μ - polishing
650 grit = 28/20 μ - polishing
550 grit = 40/28 μ - fine grinding
325 grit = 50/40 μ - fine grinding
285 grit = 63/50 μ - fine grinding
240 grit = 80/63 μ - fine grinding
225 grit = 100/80 μ - fine grinding
160 grit = 125/100 μ - grinding
100 grit = 160/125 μ - grinding
80 grit = 200/165 μ - sharpening / rough grinding
Next generation, combined (copper-resin) bonds BP50, BR08, BR05, which are as wear-resistant as copper-tin (metal) bond, but still are softer and do not require lubricant.
Concentration - 200%, twice more CBN than in 100% concentration stones
Professional stones with 200% longer working life and productivity, not recommended for beginners.
They work faster, it pays off for professional, who sharpens 30+ stones per day.
"I pay more for stone, but I earn also much more"
Without experience in sharpening, you would not feel all advantages of 200%
Flat solid block on aluminum blank.
Application: for professional hand sharpeners.
CBN combined bond sharpening stones are especially recommended for sharpening/polishing of cutting edges.
Preparation
Unlike other sharpening stones, most of these combined bond stones do not need preparation, except stones with grits finer 1 microns (<Grit 15000). Ultrafine grains (1/0, 0.5/0) form agglomerates in a bond, so you may need to dress them with abrasive powders/pastes, or they will be self-polished after sharpening of 30-50 knives.
Use and cleaning (unclogging)
If glazed - clean (unclog) with alcohol and toothbrush.
Maintenance (in 1-2 year), flattening/revitalization - with silicon (silica) carbide powders on glass plate,
Presentation of premium cubic boron nitride sharpening stones
Premium Cubic boron nitride sharpening stones
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Sharpening with Poltava diamond and cubic boron nitride stones
Sharpening with Poltava diamond and CBN stones
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My listings of Poltava sharpening/honing stones (Length x Width x Abrasive Thickness, mm):
Diamond sharpening stones: not recommended for steels with high carbon content, but perform well with hard steels, like CPM S90V.
CBN sharpening stones: standard for steels.
Combined bond: next generation bond, combines delicacy of resin bond on fine grains, and wear resistance of metal bonds on coarse grain sizes.
Sets: preselected stones to make your choice easier: metal and combined bond sharpening stones on blanks.
Pro 200% - professional stones with concentration 200% (standard stones are 100% concentration), which means higher productivity and longer tool's life.
Economy: cost saving solution for most sharpening applications.
"Pro" and "Economy" are the only nicknames I use for stones and I suppose it's clear why. No pathetic nicknames and brands. Just product as it should be, from trusted Poltava seller.
"Pro" and "Economy" are the only nicknames I use for stones and I suppose it's clear why. No pathetic nicknames and brands. Just product as it should be, from trusted Poltava seller.
Made in Ukraine, by Poltava plant of diamond tools.
Grain conversion chart
click to enlargeShipping:
Ukrainian post (ukrposhta.ua), registered mail with tracking number; delivery time to US, Europe - 2-4 weeks.
Tracking will be available on your local post website when order arrives to your country; it is advisable to track on specialized sites like trackitonline, etc.
All orders do arrive if address is correct, but delivery time of some parcels may be delayed up to 2 months because of logistics or customs issues. Please contact me first before opening case.
International Buyers – Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.
Grain conversion chart
Catalog of diamond and CBN tools
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