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Re: OpenSCAD is a game changer for 3d printing

Today I used my 3d printer for something useful.

I have an (old and expensive to repair) automatic trash can opener, and in a fit of anger I slammed down the lid and heard something break..  Opening it up revealed a plastic gear has snapped in half in the gearbox mechanism that opens and closes the lid.
I tried epxoying it and supergluing it, and both fixes lasted less than a day.  I then tried to figure out how I might order a replacement part.  No luck.

I finally decided to try to use my 3d printer and print a replacement.  I used OpenSCAD, which is magic, and an awesome library for it called involute_gears.

After a few experiments to get the fit exactly right, it seems to be working great.  This is definitely the future of repairs.

Doordash and Pizza Arbitrage - Unloading capital cannons on customer acquisition

A pizza shop discovers that a 3rd party delivery service has hijacked their google listing to offer deliveries for their pizza, and reselling their pizza at a loss... How is this a business model?

Another mystery of capitalism.

But he brought up another problem - the prices were off. He was frustrated that customers were seeing incorrectly low prices. A pizza that he charged $24 for was listed as $16 by Doordash...
You have insanely large pools of capital creating an incredibly inefficient money-losing business model. It's used to subsidize an untenable customer expectation. You leverage a broken workforce to minimize your genuine labor expenses. The companies unload their capital cannons on customer acquisition, while this week’s Uber-Grubhub news reminds us, the only viable endgame is a promise of monopoly concentration and increased prices. But is that even viable?


Re: Favourite youtube channels

Absolutely compelling 25 minute live solution of a sodoku puzzle:

Re: What books are you reading?

The Making of Prince of Persia by Jordan Mechner

Screenshot - 5_18_2020 , 12_51_55 PM_thumb001.png

"Prince of Persia" was a pretty influential computer game for the Apple II and original IBM PC that game out in 1989 or so..

This book collects the journals and notes of the 19 year old kid who made the game.  Filled with little anecdotes of the time, etc.

Great stuff.

Prince of Persia video:

Distance Board Gaming Guide from BGG

Screenshot - 5_14_2020 , 5_37_57 PM_thumb001.png
Great list of board games in different categories that are suitable for online play.


Mini Papercraft models of Retro Computers to Print and Assemble

Screenshot - 4_30_2020 , 8_13_56 PM_thumb001.png
This is truly wonderful.  A collection of downloadable print-and-assemble paper craft models of retro computers including the Apple II, the IBM PC, the TRS-80 Model 3, by Rocky Bergen.

These look wonderful -- you just download and print them and cut and assemble.  Love it.


Screenshot - 4_30_2020 , 8_13_56 PM_thumb001.png

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