Steel working and tool dressing; a manual of practical information for blacksmiths and all other workers in steel and iron by Casterlin Warren S

Author:Casterlin, Warren S
Language: eng
Format: epub
Tags: Blacksmithing, Steel, Tools
Publisher: New York, M. T. Richardson
Published: 1914-03-25T05:00:00+00:00

shape. The outer edges weld first and consequently retain all the slag in the hollow of the scarf and it is almost an impossibility to make a good weld. The pieces shown on page 01 are made right. Instead of being hollow they should be full in the center (convex) and the instant one piece is laid on top of the other, the first blow forces all the slag out and more hammering welds the center clear out to the edge.

time,'* and when he learned that I had selected him, his joy knew no bounds. To-day he is head tool dresser in a large shop.

Boring Bits.

Keep your bits for boring wood in a dry place; a

drawer well lined with tallow or grease of some kind is

good.

Danger in Rehardening Tools.

There is much more danger in rehardening tools that have been laid with steel than there is of tools made from

104 STEEL WORKING AND TOOL DRESSING.

solid steel. When we plunge a tool in the bath to cool, if it is solid steel, the shrinking is very nearly even. If iron and steel, the shrinking is very uneven from the fact that the difference between cast steel and wrought iron is very great, and if it be an anvil or sledge, the hard blows that it has been subjected to has crystallized the metals (especially the iron) at the dividing line, or where the union took place, and the moment they begin to shrink there is a separation, and every time they are rehardened the danger of separation increases. You may take the very best wrought iron anvil made, one that has never been used, and begin heating and hardening it, and after it has been hardened a few times, the face is loose in several places, and this can be carried on until the face is entirely loose.

In solid steel tools, you will notice that some steel cools off much quicker than other kinds. I like to have steel cool off instantly. Steel that is a long time cooling off is the steel that is apt to crack. There is some steel that will invariably crack when hardening, regardless of what kind of treatment you give it, or how carefully it is hardened. It is caused by some mismanagement in mixing or making, such as too much killing, or not enough, or many other mishaps which often occur. But in spite of this fact, some steel makers are ever ready to saddle the whole blame on the blacksmith. When steel, after careful treatment, proves to be worthless, return it to the makers, or those from whom you get it.

Bear in mind that the average hardware man knows nothing about steel, either as to carbon or quality, yet he will assume to know and to talk wise. If you buy steel, hold the man that sold it responsible for both the steel and

STEEL WORKING AND TOOL DRESSING. 105

the labor lost on it. There are two dozen concerns, or more, making steel in the

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