[HN Gopher] Holier Than Thou: Precision Holes by Drilling, Borin...
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Holier Than Thou: Precision Holes by Drilling, Boring, and Reaming
(2021)
Author : walterbell
Score : 117 points
Date : 2022-08-28 14:40 UTC (2 days ago)
(HTM) web link (tarkka.co)
(TXT) w3m dump (tarkka.co)
| mikewarot wrote:
| Not only was it a great and informative video about machining,
| their shop has a ruler with a decimal inch scale (1/100ths of an
| inch).
|
| If I were King for a day, all inch rulers would have at least one
| decimal scale. 8)
| walterbell wrote:
| They sell that ruler :)
| https://www.etsy.com/listing/752770664/6-steel-rule-with-imp...
|
| _> We designed this ruler with the engineer and machinist in
| mind. Made of tempered 301 Stainless Steel with a natural
| brushed finish and photo etched markings, this ruler is a high-
| quality measurement tool that will not wear with use.
| Additionally these are made in the USA // 6" Steel Rule with
| Imperial and Metric Units // Machinist's Ruler // Engineering
| Ruler // 1/32" and Decimal Inch & 1mm and 0.5mm Graduations_
| dekhn wrote:
| why not just convert everything to metric if you're King?
| mikewarot wrote:
| I don't think people would get used to having a nice day
| being 300 degrees, and water freezing at 273.15. You've got
| to pace yourself in these metric conversions, tenths of an
| inch is something that wouldn't get undone the next day.
| sandworm101 wrote:
| ??? Metric, not scientific notation. Water around my place
| greezes at 0c and boils at 100c, both of which are far
| easier to understand than any other system.
| [deleted]
| Mvandenbergh wrote:
| What a wonderful set of videos these are, thank you for sharing.
| hilbert42 wrote:
| This is an excellent and concise video on the subject. It's while
| since I've had to bore precision holes and ages since I was
| taught how to do so, so it was an excellent refresher course.
|
| Its comments on measurement and metrology are particularly strong
| and well worth listening to.
|
| On that point, I wouldn't use calipers to measure the ID of a
| precision hole but I'd almost forgotten that scaling error
| requires the ID jaws of calipers to be a thou or so smaller than
| the OD ones. Stands to reason when you think about it. Raising
| that issue shows how useful this video is, it shows that its
| authors pay careful attention to detail.
|
| Similarly so, their comment in respect of plug gauges and the
| trouble in differentiating between them during hole measurements
| due to burrs etc. (I'm a bit obsessive about deburring workpieces
| properly and I get pissed off when I see others failing to do so
| - so this comment rang bells with me.)
|
| I'd strongly recommend this video to just about everyone in the
| machining game.
| hardnose wrote:
| Now THIS is boring!
| MisterTea wrote:
| This is an excellent site. I have some machinery and grew up in a
| machine shop so I know my way around but lack the nuanced
| experience due to circumstances well beyond my control.
|
| I am also VERY thankful they transcribed their videos otherwise I
| would have skipped the site entirely as video is not a format I
| enjoy. We need more quality content like this that isn't locked
| up behind some crappy walled garden guarded by commercials and
| flanked by ads.
| walterbell wrote:
| https://tarkka.co/about-us/
|
| _> We are a husband and wife engineering team with over a decade
| of combined experience developing high-performance products for
| the aerospace and energy fields. Through our YouTube channel, we
| break down complex engineering topics into entertaining and
| informative videos. We hope to democratize access to mechanical
| engineering knowledge via the internet in the same way that
| others have made electrical and software engineering
| approachable._
| daniel_reetz wrote:
| I work in prototyping and optomechanics. Their explainer videos
| are among the best I've ever seen.
| walterbell wrote:
| It was so well done that I initially wondered where they
| found male _and_ female voice actors to read a technical
| script so convincingly :)
|
| As one commenter said,
| https://tarkka.co/2019/04/28/engineering-drawings-how-to-
| mak...
|
| _> The effort you and detail you have put into your videos
| is beyond anything I have seen anywhere else. I can't thank
| you enough for taking the time to put this together. By the
| way, the juxtaposition of your two voices really adds to the
| professionalism. I am a home machinist but I want to do as
| close to professional quality work as I can and your videos
| are a great part of that._
|
| Much can be learned from their approach, e.g. providing
| templates and other actionable references for students to
| apply the techniques.
| caycep wrote:
| I feel like the cycling community would go gaga over this.
| Because eventually many cyclists end up being armchair
| mechanical engineers
| dekhn wrote:
| as a kid I took apart my bike and cleaned up all that dirty
| grease, then reassembled it with some wd-40.
|
| Took a couple decades before I knew exactly what I had done
| wrong.
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(page generated 2022-08-30 23:01 UTC)