The object of this shellac coating is to keep the angles formed at the meeting of the face and side clean in the process of grinding with oilstone dust and oil.
The face of the regulator is now placed on the ground glass after smearing it with oil andoilstone dust.
The regulator bar, after careful filing and dressing up on the edges with an oilstone slip or a narrow emery buff, is finished as previously described.
This process of grinding makes what is called a feather-edge, or wire-edge, and the tool must be whetted on an oilstone to remove this wire-edge.
Illustration: A Pencil Sharpener That will Make a Point without Breaking the Lead] Cleaning an Oilstone Use kerosene oil and a sprinkling of emery flour and proceed to sharpen tools.
At the end of space for oilstone nail a strip an inch wide across the shelf, and a similar strip in front.
In the one half inch space between place for plane and oilstone put a little block one half inch wide and one inch long.
The motion of the hands should not for the oilstoning be simply back and forth, parallel with the oilstone length, but partly diagonal, which will assist in keeping the chisel level.
The oilstoning should be performed alternately on the flat and bevelled faces, the blade being pressed very lightly on the oilstone toward the last part of the operation, so as to leave as fine a wire edge as possible.
In oilstoning the concave side of a gouge an oilstone slip is employed, the gouge being held in the left hand and the slip in the right, the latter being supplied with clean oil.
The back of the chisel should be laid flat upon the oilstone and moved diagonally, under a light pressure, which will remove the wire edge, which may be further removed by lapping the chisel on the operator's hand.
Three kinds of oilstone are in general use, Turkey stone, Arkansas stone, and Washita stone, the latter being softer and of inferior quality to the two former.
If it is too coarse it leaves a rough edge, which may, however, be smoothed with an oilstone slip.
Instead of using the oilstone an easier, tho less perfect, way to flatten out the burr on the edges is to lay the scraper flat on the bench near the edge.
Then the scraper is laid flat on the oilstone and rubbed, first on one side and then on the other till the sides are bright and smooth along the edge, Fig.
When an oilstone becomes hollow or uneven by use, it may be trued by rubbing it on a flat board covered with sharp sand, or on sandpaper tacked over a block of wood.
The "India" oilstone is a composition of emery with some kind of stone dust, and is a useful stone for quickly rubbing down superfluous steel before putting an edge to the tool.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "oilstone" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: edge; file; grind; point; sharpen; sharpener; spur; stone; strap; strop; taper; whet
