uncleflo

K40 C02 Laser Rail System | OpenBuilds

https://openbuilds.com/builds/k40-c02-laser-rail-system.5270/

Saved by uncleflo on December 19th, 2019.

The goal of this build was to use as many off-the-shelf Openbuilds components as possible, leveraging bundles to simplify the build further. Still, there are a few pieces that need to be custom printed, such as the mirror and laser head mounting plates and the Mini V gantry shims. The gantry shims are essential to ensuring the height remains consistent as the beam travels from mirror to mirror. The main problem with stock "Cheap Chinese" "K40" 40W CO2 Laser cutters commonly purchased off of eBay is that they use custom, hard-to-find hardware of often questionable quality and consistency. Also, their chassis separates the tube and its fixed X Stage mirror from the moving Y Stage, thus making it nearly impossible to ensure the mirror heights stay consistent. This creates a needlessly painful alignment problem that many people constantly suffer from. Still, the core laser components provided in a stock K40 are serviceable, so the hope is that this replacement rail system will allow for a relatively affordable modification option that drastically simplifies the alignment process by improving the component quality and integrates the stages together to effectively turn a 3 dimensional alignment into a 2 dimensional one.

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graphics.stanford.edu/courses/cs148-10-summer/docs/2006--degreve--reflection_refraction.pdf

http://graphics.stanford.edu/courses/cs148-10-summer/docs/2006--degreve--reflection_refraction.pdf

Saved by uncleflo on February 22nd, 2015.

When writing a ray tracer, sooner or later you’ll stumble on the problem of reflection and transmission. To visualize mirror-like objects, you need to reflect your viewing rays. To simulate a lens, you need refraction. While most people have heard of the law of reflection and Snell’s law, they often have difficulties with actually calculating the direction vectors of the reflected and refracted rays. In the following pages, exactly this problem will be addressed. As a bonus, some Fresnel equations will be added to the mix, so you can actually calculate how much light is reflected or transmitted (yes, it’s possible). At the end, you’ll have some usable formulas to use in your latest ray tracer.

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github.com - w0ng / googlefontdirectory

https://github.com/w0ng/googlefontdirectory

Saved by uncleflo on April 7th, 2014.

Created for easier access to all of Google Fonts, with a smaller download size compared with using Google's official repository (100MB vs 2 GB). Install these fonts the same way as you would with any other font. Copy the desired fonts to your system's font directory. Grab all the fonts in a compressed format by downloading one of these:

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28 ways to tell whether you’re running a ‘lean startup’ - Startups.co.uk: Starting a business advice and business ideas

http://startups.co.uk/28-ways-to-tell-whether-youre-running-a-lean-startup/

Saved by uncleflo on March 28th, 2014.

Serial entrepreneur and founder of Blur Group Philip Letts on how to spot a lean start-up in a crowd – and build one yourself. Lean start-ups are getting a lot of attention right now. Perhaps it’s a cultural nod to the post Lehman, pro-austerity climate mirrored through the latest business winnows.

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21.2. The Z File System (ZFS)

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/filesystems-zfs.html

Saved by uncleflo on September 20th, 2013.

The Z file system, originally developed by Sun™, is designed to use a pooled storage method in that space is only used as it is needed for data storage. It is also designed for maximum data integrity, supporting data snapshots, multiple copies, and data checksums. It uses a software data replication model, known as RAID-Z. RAID-Z provides redundancy similar to hardware RAID, but is designed to prevent data write corruption and to overcome some of the limitations of hardware RAID.

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Dictionaries & Language Packs

https://addons.mozilla.org/en-US/firefox/language-tools/

Saved by uncleflo on December 17th, 2010.

Dictionaries & Language Packs, lots of language tools and language packs for mozilla firefox, that automatically check the text of what the user has put into text boxes or text areas. You can select a different language from the mous menu when right clicking on typed text.

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Fergason Patent Properties LLC | Liquid Crystals and Intellectual Properties

http://fergasonpatents.com/sm/index.htm

Saved by uncleflo on April 5th, 2008.

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