Wall-mount sink on plaster wall
so bob, i just checked a 1915 industrial catalog. it gets more interesting. “bits” are what go in the hand brace – the wood augers with the chamfered squarish shaft. “Drills” are the modern twist drills that we put in the electric drill. by this time the electric drill had been invented though i am not sure it was in common use.
stevecym
in General Discussion 4 years and 10 months ago
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stevecym | 4 years and 11 months ago
and by the way, what i am talking about is not far off the hilti system which uses an anchoring epoxy to set heavy construction anchors.
using materials this way and using modern materials (such as epoxies which were not around when i was in grade school) is how this industry can move and modernize and become more efficient and better. less time guessing, worrying about holes sizes and more time doing- but people have to stay on top of things.
stevecym | 4 years and 11 months ago
so i have been thinking about the issue with the plastic mollys and the masonry bits that come in the kit with them. in an ideal world, the bit that comes in the anchor kit is sized perfectly for the anchor. but when drilling masonry, the bit often removes more than it should even when the mortar does not crumble. it may be that the bit wanders, particularly when using a hammer drill, enlarging the hole. because of this, what bob is saying about the plastic anchors is correct, they are risky. so over time i have learned NOT to use the bit with the kits but go with one a tad bit (no pun; by the way drill bits are not bits but “drills” – i had a shop teacher tell me “a ‘bit’ goes in a horses mouth”) smaller. this tightens the hole up around the plastic molly. no epoxy needed.
shahnandersen
in General Discussion 4 years and 11 months ago
Steve,
Perhaps I am the same vintage (or a little older) than you, but in my shop class a bit was the drilling tool that is attached to a hand brace (remember those).
stevecym | 4 years and 10 months ago
bob,
i cannot recall using the hand drill in shop. we had one at home and i still have one here. i have always called a drill bit a drill bit and often wondered if that teacher was correct. Now that you have entertained this, i think i know where the shift in the words comes from – the tool you reference was not called a drill but a “brace”. it held a “drill” not a “drill bit”. with the advent of electric tools, the machine that held a drill became the drill. so they had to call the drill bit something else. i do seem to recall ordering bits from an industrial catalog and they were called “drills”. i have some old hardware and tool catalogs here from the turn of the century and might take a look to see how they reference them. i suspect though that the shop teacher i am thinking of was harking back to another era – how else would he know that a bit was “what went in a horse’s mouth”. i bet that old guy was resisting change just like some people wish it would slow down now.