Here are a few pics from ebay. Note that the story is 22 years old and he worked in the 1980's so he may be thinking of an even older design than the one I foun

Here are a few pics from ebay. Note that the story is 22 years old and he worked in the 1980's so he may be thinking of an even older design than the one I found. It's not like literally a cube but it's notably more cube-like than any consumer drill, and the handle shown here looks like regular pipe with a rubber handle. I really don't think you should take writing like this literally. https://i.ebayimg.com/images/g/FHcAAOSwLfVg0K4w/s-l640.jpg https://i.ebayimg.com/images/g/FHcAAOSwLfVg0K4w/s-l640.jpg https://i.ebayimg.com/images/g/LosAAOSwZS9g2quf/s-l1600.jpg https://i.ebayimg.com/images/g/LosAAOSwZS9g2quf/s-l1600.jpg https://i.ebayimg.com/images/g/c1EAAOSwmAhg~B-F/s-l1600.jpg https://i.ebayimg.com/images/g/c1EAAOSwmAhg~B-F/s-l1600.jpg https://i.ebayimg.com/images/g/U-kAAOSwT4Ng~B-Z/s-l1600.jpg https://i.ebayimg.com/images/g/U-kAAOSwT4Ng~B-Z/s-l1600.jpg