Wikipedia:Reference desk/Archives/Miscellaneous/2020 November 23

= November 23 =

Domino tool for drilling square holes
Someone on reddit says woodworkers nowadays use a tool called a "domino" for drilling or cutting square holes. Wikipedia's page Domino (disambiguation) doesn't give any candidates for it. Any idea if it has another name? Also, how does the drill in the reddit thread's video work? Thanks. 173.228.123.178 (talk) 04:27, 23 November 2020 (UTC)
 * 107.15.157.44 (talk) 06:08, 23 November 2020 (UTC)
 * This should be the article you're looking for.   Please ping when replying . 05:43, 23 November 2020 (UTC)


 * An auger can make an almost square hole using a bit shaped like a Reuleaux triangle. You cannot use a Reuleaux triangle bit on a standard drill; to work, the tool needs a special chuck to force the cutting bit to remain within a square. In images of Domino dowels, the sides are rounded; the cross section is more like an elongated oval formed by a rectangle ended on either side with a half disk. So it looks they don't use a Reuleaux triangle bit. --Lambiam 09:47, 23 November 2020 (UTC)

Thanks everyone. 2602:24A:DE47:BB20:50DE:F402:42A6:A17D (talk) 06:33, 25 November 2020 (UTC)
 * I've added the Domino joiner to the Domino disambiguation page. Turner Street (talk) 11:31, 27 November 2020 (UTC)
 * Oops, didn't spot that it had already been added. Removed my addition. Turner Street (talk) 11:35, 27 November 2020 (UTC)

List of postal codes in a region
I feel like this should really be easily available, but I'm severely struggling. What I'm looking for is a list of postal code prefixes in Ontario, by region/county (i.e. tertiary-level subdivisions). That is, I'd like a simple table that, for example, lists "N2E" with "Waterloo Region" beside it. After much Googling, I have come maddeningly close, but without luck. This is close, but horribly laid out. It's apparently based off of this, which has a downloadable version available here. That is even closer to what I want but it doesn't include the region, just the city or municipality. (Per my example above, it lists "N2E" but only says that it's in the area designated "Kitchener Southeast" in area "Kitchener" and even has a third level column, but it's empty. So, too fine. Further searching gave me a downloadable list of municipalities here by region, but "municipality" is not quite what the postal code data goes by, so that VLOOKUPs fail half the time. It's getting very frustrating, which is not good for data analysis. :-) It just feels like I'm somehow threading the needle of finding almost-but-not-close-enough data. For context, I'm trying to understand the impact of recent COVID-19 countermeasures, which in Ontario is typically designated by the region level. Matt Deres (talk) 18:51, 23 November 2020 (UTC)

Seeing double
Without naming names, there are (and have been) famous magicians whose act depends significantly on the fact that they have an identical twin (and that this fact be kept secret). Is there some legal way for public records (birth, etc.) to be either altered or kept secret? What about such things as social security numbers? Can two people be considered a single entity in a legal sense? If the twins are "outed", is there a legal recourse for suing the person who outed? 107.15.157.44 (talk) 18:52, 23 November 2020 (UTC)


 * This is going to vary from region to region and over time. While a company may be considered a legal person in some contexts, the people that make up that company, even if they are twins, are natural people with distinct birth records and so on. FWIW, some quick Googling suggests that twins are an occasional twist, but hardly secret. As to whether there is legal recourse for someone spilling what amounts to trade secrets, that's also going to vary from place to place and also on circumstance. For example, if I break a non-disclosure agreement to not tell anyone about X's twin sister, that's different from me just knowing that they have a twin and revealing that. Matt Deres (talk) 19:51, 23 November 2020 (UTC)


 * Other than being plot elements in a movie and a TV show, is this something in reality? --jpgordon&#x1d122;&#x1d106; &#x1D110;&#x1d107; 01:39, 27 November 2020 (UTC)
 * Absolutely. Examples can sometimes be found on Penn & Teller's Fool Us. --107.15.157.44 (talk) 02:34, 27 November 2020 (UTC)
 * --jpgordon&#x1d122;&#x1d106; &#x1D110;&#x1d107; 15:14, 27 November 2020 (UTC)
 * Citation:
 * Penn Jillette on The Opie & Anthony Show
 * --107.15.157.44 (talk) 16:12, 27 November 2020 (UTC)