RFACo. ~ Rosetta Premium-Fine Grade ~ 970g ** Natural Whetstone/Sharpening Stone For Sale
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RFACo. ~ Rosetta Premium-Fine Grade ~ 970g ** Natural Whetstone/Sharpening Stone:
$72.05
Item SpecificsRosetta~ Premium-Fine Grade ~Length - 9 3/8" ~ 23.8cm
Width - 2" ~ 5.0 cm
Depth - 1 1/4" - 1 1/8" ~ 3.1 cm - 2.8 cmnet weight - 2.136 lbs ~ 970g
~ ~ ~ ~- Rosetta -- Premium-Fine Grade -
Highly microporous surface approaching a glazed ceramic in texture.
An ultra-hard, durable, super fine stone made from an excellent, tightly grained natural source mineral.
Slow cutting, micro-porous polishing stone. High density hone to create an optimum profile to stainless steel edges.
A burnishing hone suited to final finishing and polishing of best quality straight razors.
~Microporous silica containing trace amounts of sericite~
~Rosetta Premium-Fine Gradegives optimum finishes to surgical grade steel alloys~
~ ~ ~ ~
-Use water/soap lather or nagura type slurry stones to keep the porous surface clear of sharpening swarf-
- Alternatively, the hone may be given dressing and kept as an oil stone-
- Full lapping one side - See listing images -
~ For lightcleaning of the surface: 600 grit silicon caroffere paper sheet cost inclusive ~
~ For any routineflattening of the surface, silicon caroffere dressing stones are preferred ~
~ ~ ~ ~
Rosetta sharpening stones qualify into five types:
Premium-Fine Grade:
Very fine, final finishing variety & uniquely clear, hard grain of stone.
Slowcutting stoneused in final finishing.
Note on Premium-Fine Grade:Extremelytight grain of stone.
For optimum finishing, use on soft to medium temper steelalloys.
~ Note: Rosetta Matrixare recommended for veryhard tempers. ~
Superior-Fine Grade:
Similarly, a very fine finishing type, equally as hard and durable, yet of slightly less tightness to the grain.
Regular-Fine Grade:
Excellent for procession honing, cuts quickly with a specific ease to control.
The grain is more open, has somewhat less density.
Provides stainless alloys with brilliant finishing polish.
Course Grade:
Agritty type of micro-quartz mineral, quite porous & fast cutting.
For resurfacing &/or removingsmall damages to the edge,initializing bevels, &c.
Matrix:
A top grade finishing hone when sharpening harder temper alloys &/or high caroffere steel.
Uniquelysuitable for achieving bright polishing & surgical grade finishes tohard temper steel.
Ultra hard, tight clay matrix variety. Slower cutting, microporous stone.
Hard, dense and fine~SedimentaryMatrix Type~Finishing hone~
~See our in storelistings for a selection ofclay matrix water style="text-align: left; margin: 0px; line-height: normal; font-stretch: normal;">
~Attention Canadian Customers; For combined shipping, inquire for Canada Post Flat Rate Box; up to 5 kg for $20 CAD
A 'pure' sample of novaculite would contain SiO2 or molecular silica only. Our 'Invitica' listings are from this type of geological formation. Sedimentary or clay matrix novaculite often have 2/3 SiO2 [silicon dioxide] content. Generally speaking, this is the microporous form of quartzite doing the sharpening. The other 1/3 is a bonding mineral often known as either Muskovite or as Sericite.".
The 'Persia' hones as fine examples of these sharpening stones. Black veins occurring in certain hones exhibit iron oxide concentrations in the Muskovite. In others, bluish patches demonstrate other mineralizations within the clay matrix stones.Iron oxide is normally present. Certain matrix stones have higher, more visible concentrations [In Japan, this characteristic is known as renge].Examples of our “Lochinvar” sharpening stones demonstrate this ‘Iron Renge’ as an orange feathering or what specific examples surface as a pattern of glowing metallic sheen.“Rosetta” ‘Premium-Fine', 'Superior-Fine', 'Regular-Fine', & 'Select’ stones have been exposed to very high temperature volcanic or geothermal activities, thus giving them giving them an extraordinary hardness. This aspect demonstrates both the level of geothermic activity that had once taken place and the actual qualities of their mineral sediment.Often, natural hones are praised because the actual particle fineness is superior to that of man-made and synthetic stone. Also, the natural particles break away while honing, in turn leading to both longer lasting and more durable edges. Also, the mineralogy of individual deposits lead to a greater range of specifics. Such honing creates subtle, distinguishing results, some are more 'crisp', some more 'feathered', certain stones finish well again with the steel of a certain temper, and so on. Lastly, it is within professional establishment that natural stones do, in fact, harden the edge.
Sharpening-grade novaculite normally produces a range of textures. These range from those with the appearance of an unglazed porcelain, a porosity of several percent and serves as a good stone for coarse sharpening, to an extremely fine-grained material known for having almost no porosity and as an excellent tool for honing a razor-sharp blade.About our company
For all types of fine stainless steel alloys, naturally occurring minerals possess many advantages. At Royal Flint Abrasives Co., mineral specimens specific to the Canadian West are selected for the manufacture and retail of sharpening stones. Quarried at the naturally occurring deposits and brought into local workshop facilities, RFACo. means to employ sustainable resources of the highest quality to achieve surpassing edges every time.
Royal Flint Abrasives Co.
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