First of all, Bob, you have to be half nuts to run for president,
2.
Tempting, and half nuts, in this Candlestick case.
3.
"It's driving me half nuts, " he said.
4.
"When something like that happens, you go half nuts, " he told Solace Wales half a century later.
5.
"Maybe I'm half nuts ."
6.
But Kerrigan, who molded magnificent staffs in Montreal, is not unlike the guy trying to sculpt the face of Crazy Horse out of rock : The job may take years to complete, and you have to be half nuts even to attempt it.
7.
For screw cutting, a "'half nut "'is engaged to be driven by the leadscrew's thread; and for general power feed, a key engages with a keyway cut into the leadscrew to drive a pinion along a rack that is mounted along the lathe bed.
8.
A lead screw is sometimes used with a split nut also called half nut which allows the nut to be disengaged from the threads and moved axially, independently of the screw's rotation, when needed ( such as in single-point threading on a manual lathe ).
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