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We decided to abandon the use of tubes, as they did not afford enough spring to take up the shocks of premature or missed explosions of the motor. Solid tool-steel shafts of smaller diameter than the tubes previously used were decided upon. These would allow a certain amount of spring.

Tool-steel alone will serve. Our little record cache at the Parker Pass, placed at the foot of the west or upward-facing side of the great slab which marks the natural camping site, should stand there for many years. It is not a place where snow lies deep or long, and it will surely be found by any who seek it.

Presently his friend Derec came to see him in the tool-steel cell in which he had been placed. Derec looked white and stricken. "I'm in trouble because I'm your friend, Bron," he said miserably, "but I asked permission to explain things to you. After all, I caused your arrest. I urged you not to connect up your receptor without permission!"

"There! There!" repeated Flint, plucking at the dazed Waldron's sleeve. "Tool-steel and concrete, twenty-five feet thick and vacuum chambers all about there we can hide! There's safety! Come, come quick!" Together, furtive as the criminals they were, these two world-masters slunk toward the steel door, while without, their empire was crashing down in smoke, and flame, and blood!

With a built-in tool-steel cell to keep me from telling anybody how to make " He stopped and grimaced. "If they had time to build one in, that's certain! They'd take me to the spaceport in a sound-proofed can and I'd be hauled back to Walden in it. Fine!" "What are you going to do?" asked Fani anxiously. Hoddan's ideas were not clear. But Darth was not a healthy place for him.

In fact, diny teeth, being organic, seemed to be an especially hard form of boron carbide. Dinies could chew iron. They could masticate steel. They could grind up and swallow anything but tool-steel reinforced with diamond chips. The same amateur chemist worked it out that the surface soil of the planet Eire was deficient in iron and ferrous compounds. The dinies needed iron. They got it.

He adds that some of the earliest travelers in Africa found a tribe in the interior who gave them better razors than the explorers had. Oriental steel has been celebrated for ages as an inimitable product. It is certainly true that by the simple processes of semi-barbarism the finest tool-steel has been manufactured, perhaps from the days of Tubal Cain downward.

Barrett would be glad to do business with him, once the gunsmith saw that hard tool-steel he had dug out of that place down the river. Hardest steel either he or his father had ever found, and it hadn't been atom-spoiled, either. He cleaned, wiped and stropped his razor and put it back in the case.

It only took a couple of hours to make and install it; Little Fuzzy got the idea as soon as he saw it, and figured out how to work it for himself. Jack went back to the workshop, built a fire on the hand forge and forged a pointed and rather broad blade, four inches long, on the end of a foot of quarter-inch round tool-steel.

The swords and daggers made in central Asia two thousand years ago were more remarkable than any similar product of the present for elaborate and beautiful finish as well as for a cutting quality and a tenacity of edge unknown to modern days. All the tests and experiments of a modern government arsenal, with all the technical knowledge of modern times, do not produce such tool-steel.