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vgr's profile
Venkatesh Rao
Venkatesh Rao
Venkatesh Rao
@vgr

Tweets

Venkatesh Rao

@vgr

Conversational account. For work follow @ribbonfarm, @breaking_smart, @artofgig. Tweets are 90% vacuous views, apathetically held. Mediocritopian. IKEA builder.

Los Angeles, CA
venkateshrao.com
Joined August 2007

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    1. Venkatesh Rao‏ @vgr Aug 31
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      Drilled a hole. Managed to get it off center. This extended 3d printed ribbonfarm universe is not very symmetric is it?pic.twitter.com/sthukbwL37

      2 replies 0 retweets 2 likes
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    2. Venkatesh Rao‏ @vgr Aug 31
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      Installed... but le sigh... guess I measured badly. Off by like 2mm and didn’t clamp. BUT had this random bit of scrap plastic lying around because I’ve been lazy about tossing stuff. This was tie down strap for a set of socket wrenches I bought recently and only just opened.pic.twitter.com/PteeT3qe3o

      1 reply 0 retweets 2 likes
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    3. Venkatesh Rao‏ @vgr Aug 31
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      So cut off one of those stemmy bits and jammed it into clearance space. Perfect. The whiteboard even happens to have grooves there that make it fit neatly.pic.twitter.com/2WIvMBJse5

      1 reply 0 retweets 3 likes
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    4. Venkatesh Rao‏ @vgr Aug 31
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      fin

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    5. Venkatesh Rao‏ @vgr Aug 31
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      Venkatesh Rao Retweeted Venkatesh Rao

      The doorstop works out to $1 marginal costhttps://twitter.com/vgr/status/1300654066612068353 …

      Venkatesh Rao added,

      Venkatesh Rao @vgr
      Replying to @mikemee
      It’s $23 for 1kg roll of filament, and the piece weighs 33g. Let’s say 7g for losses/scrap. 40g works out to $0.92. Max power consumption is 120w, and this was maybe 3h total for printing the two parts. So 0.36kwh. CA average is 0.16c/kWh so 0.0576 =~6c. Add 2c of glue: $1 total
      1 reply 0 retweets 10 likes
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    6. Venkatesh Rao‏ @vgr Aug 31
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      Cheapest I found on amazon is $14.95 for a 10-pack, so $1.49... so this is about 33% cheaper. Plus I only need to print 1 and don’t have to buy 10. The singles are really expensive and most are 4 packs at least.https://www.amazon.com/Stoppers-Minimalist-Neoprene-Resistant-gripping/dp/B07YD58YLQ/ref=sr_1_24?_encoding=UTF8&c=ts&dchild=1&keywords=Door+Stops&qid=1598935129&sr=8-24&ts_id=1069196 …

      1 reply 0 retweets 5 likes
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    7. Venkatesh Rao‏ @vgr Aug 31
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      Venkatesh Rao Retweeted Venkatesh Rao

      Even with a reasonable printer amortization schedule over 10 kg, still works out pretty cheap. $1.82https://twitter.com/vgr/status/1300659116935753730 …

      Venkatesh Rao added,

      Venkatesh Rao @vgr
      Replying to @mikemee
      The printer was $219 entry level. Plus maybe $30 for tape and scraper. So not much... I’ve printed 100g maybe in 2 weeks. If I get to say 10kg before it dies, printer cost will amortize to ~2.5c/g. My door stop would be around $1.82.
      1 reply 0 retweets 4 likes
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    8. Blasphemous Aesthete‏ @anonymoussum1 Aug 31
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      Replying to @vgr

      Even I have been fancying dabbling with 3D printer (in India) mainly to assuage my desire to get into robotics. The parts are somewhat expensive in small quantity. How steep is the learning curve on 3D printing? For example, rover chassis, some small gears, linkages, maybe?

      1 reply 0 retweets 1 like
    9. Venkatesh Rao‏ @vgr Aug 31
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      Replying to @anonymoussum1

      If you have some existing CAD experience, pretty short. OnShape is free. I’m a mechanical engineer by training, but this is the first time I’m touching the tools in 23 years, got back in fairly easily. The print process is fiddly and takes some trial and error to learn.

      1 reply 0 retweets 1 like
    10. Blasphemous Aesthete‏ @anonymoussum1 Aug 31
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      Replying to @vgr

      Many thanks! I guess I should probably get started slowly and build some hands-on knowledge on CAD tools before investing in the printer itself. (The purchase most likely will happen as an impulsive buy if the enthusiasm with CAD tools boils over :-P)

      1 reply 0 retweets 0 likes
      Venkatesh Rao‏ @vgr Aug 31
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      Replying to @anonymoussum1

      Yeah make your rover in OnShape first, then get a printer

      10:54 PM - 31 Aug 2020
      • 1 Like
      • Blasphemous Aesthete
      0 replies 0 retweets 1 like

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