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Macolaepp micro-finishing stones

the indispensable honing tool for carbide and hss tool resharpening

macolaepp honing stone

Honing the ground edge with a Macolaepp micro-finishing stone

 

  • removes the ragged edge from a reground tool and gives a micron-smooth cutting edge

  • provides longer life between regrinds and higher rates of metal removal.

  • reduces friction at the work/tool interface resulting in lower power consumption during cutting.

  • regrind costs are cut, efficiency rises

  • parts are more consistent and have a better finish and machining scrap is reduced. 

  • Four grades of hand stone are available ranging from 130 microns to 25 microns grit size.

 


 



It is common knowledge that regrinding is only half the battle to bring a worn cutting tool back to its former efficiency. The grinding wheel is for removing quantities of material and re-forming the cutting edge shape. Magnification of the resulting edge will demonstrate that the cutting edge so formed is far from ready for efficient metal cutting.

 

 This is how a cutting tools edge appears when magnified after re-grinding  showing rough and honed edge
The same edge at the same magnification looks like this after using micro-finishing hand stones.

 

 

Macolaepp micro-finishing hand stones consist of sintered blocks of ultra-hard boron carbide material of closely controlled grit size. Onto these blocks are bonded handles of plastic material moulded to a comfortable and convenient shape for hand finishing cutting tools. These sintered blocks are of unusually high grit density and are robust and tolerant of misuse.

macolapp honing tool

The handles are serrated on top of the work area where pressure is applied by the finger or thumb during use, and are designed to nestle into the palm of the hand to give the operator a high degree of control over angle, pressure and stroke.

Micro-finishing hand stones are available in four colours, each colour denoting a graded grit size for controlled and predictable results.

The use of lubricant is not required with these stones due to the unique high density structure. If desired, however, a light machine oil may be used. The structure is also responsible for the stone's resistance to loading with material when cutting hard or soft substances. Dressing of hand stones is effected simply by rubbing one stone against another.

Four grades of hand stone are available ranging from 130 microns to 25 microns grit size.

       
 Code No. Grit size

Colour

Recommended
MAC.180 130 Microns

Yellow

for large carbide tools
MAC.220 100 Microns

Blue

for medium carbide tools
MAC.360 50 Microns

Red

for HSS tooling and small carbide tools
MAC.500 25 Microns

Green

for HSS tooling and small carbide tools

 

How to use

The hand lapper is used to flatten off ( lap ) the tool's cutting edge at an angle of between 25° and 40°. The "blunt" chamfer is, according to applications, between 0.1 and 0.2mm wide, or up to 0.4mm wide for heavy duty working conditions.

 

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link to macolaepp lapping paste page

link to macolaepp honing stones

 .

Trademarks are the properties of their respective owner(s).

December 2022, May 2020, updated September 2013, Septembler 2011, February 2010 CSS, November 2008, April 1999

The descriptions, illustrations, specifications, dimensions, and part numbers are subject to change without notice.

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