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CR4 - Recent Forum Threads and Blog Entries

Recent content from CR4, The Engineer's Place for News and Discussion

Published: Tue, 17 Oct 2017 17:33:52 EST

Copyright: Copyright 2017

Tue, 17 Oct 2017 17:33:52 EST

Seasoning and shading for dishes. A capable and economical magnificence help it has awesome skin purging properties for a gleaming skin. Apex Booty What is captivating is the long history and conventions connected to turmeric in Asian functions, culture and excellence. The most surely understood ser

How is Gold Made? - Neutron Star Mergers!

Tue, 17 Oct 2017 15:13:27 EST

The accuracy of the theorists' predictions compared to the observed merger is remarkable! Here is an article talking about it... Where and how this process of heavy element production occurs has been one of the longest-standing questio

HVAC New Units

Tue, 17 Oct 2017 14:49:37 EST

Hi there, I will tell you guys right up front that I have NOT done a lot of research. I will after I get some input from you. I have not done a TAB report in the building yet, for example. It is in the works. I am looking into replacing two old HVAC units. They are from the 50-60s, and they are a

Dimensional Analysis Question Help

Tue, 17 Oct 2017 10:36:35 EST

I've been given this question to do and I'm abit stuck. For a, I substituted in the dimensions into the equation and see what it gave me. I got m^3 (Working out attached). Is this the right method? What exactly does dimensionally sound mean? for part b) I just made y the subject by taking EI t

Single Point Lift @ 45 degrees

Tue, 17 Oct 2017 07:21:29 EST

Hello, I am currently designing a rectangular box enclosure, approx. 1.5m long weighing ~35kg. The box will be lifted using a crane via a single lifting point on the box. When the box is lifted, it needs to tilt and rest at 45 degrees whilst in the air. How do I calculate how far I need to place

ML200 (Honeywell PLC) DO card failure

Tue, 17 Oct 2017 06:52:25 EST

1. · On 09^th of Aug’ 2017 at around 10:30 PM both ML 200 processors went into Fault Mode with Error code “E030”. On resetting the PLC was not getting into RUN mode. · Meanwhile it was identified that the processor was in fault mode since 6 nos. I/O cards were not g

Alaska Is In Trouble.

Tue, 17 Oct 2017 04:10:21 EST

How do you re-freeze perma-frost to save infrastructure?

Neutron Stars Collide, Create Black Hole, Release Gamma Ray Burst

Mon, 16 Oct 2017 20:36:25 EST

brutal collision of two objects million solar mass each WOW! Big things in happen in big space. When it does, it can cause disruptive things to happen on Earth. I think Earth has not had a direct hit from a gamma ray burst in a long, long time. I hope it will be a very long time before the next di

Water or Land?

Mon, 16 Oct 2017 20:05:25 EST

which will it hit?

Energy Security for America on the Rise

Mon, 16 Oct 2017 19:21:05 EST This makes me smile American technology is second to none!

Hard Coat For Styrofoam Model

Mon, 16 Oct 2017 17:46:47 EST

I have a styrofoam model that I want to preserve....the styrofoam is easily dented or damaged with foreign contact, but it's something that is to be actively used as a form, so I need a coating that will produce a hard impervious shell, and not react with the styrofoam....I'm thinking about 2mm thic

Holden to Convert its Last Factory into Heritage Museum

Tue, 17 Oct 2017 13:00:00 EST

As Holden prepares to end production in Australia for good later this month, the GM subsidiary has planned a number of ways to remind Australians of all the good times they had, including a Holden-only cruise and the conversion of part of the company’s last factory into a museum. The Australi

Cold Bonding for Rubber Gaskets

Mon, 16 Oct 2017 21:03:03 EST

Cold bonding for rubber gaskets joins lengths of material without the use of heat. This bonding technique doesn’t require low-temperature conditions, but is called “cold” because no heat is applied to the gasket. By contrast, hot splicing requires either a conventional heat source

R.E. Olds Museum Offered Chance to Buy Its Building from Lansing for $2

Mon, 16 Oct 2017 14:00:00 EST

Kristi Schwartzly still recalls the morning she came to work at the R.E. Olds Transportation Museum to find that a roof leak had flooded the executive director’s office. Nothing in the museum’s collections got soaked, but the incident may very well not have happened if the museum owned t

Introducing the Smallest Wave Springs on the Market

Sun, 15 Oct 2017 04:00:00 EST

The question you’re asking shouldn’t be “how many miles did I ride” or “how many steps did I take”, but “how did someone make a wave spring that small?” From medical devices to electronics, the world around us is getting smaller. As engineers around th

How to Avoid Common Laser Engraving Mistakes

Sun, 15 Oct 2017 04:00:00 EST

Whether you are an experienced engineer or a novice maker, learning the proper uses of design equipment to avoid pitfalls and mistakes takes time and experience. From time to time, issues come up that leave designers wondering what they did wrong or how they could do something better. This is true i

A Patch Capable of Melting Fat...from Rodents

Sat, 14 Oct 2017 04:00:00 EST

Good news for zaftig mice everywhere! Researchers from Columbia University and the University of North Carolina have joined forces to develop an adhesive patch capable of melting fat…from mice. By applying the patch, which contains a number of microneedles, researchers were able to deliver

Caption This for 10/13/2017

Fri, 13 Oct 2017 20:45:00 EST

Here's this week's image: Have you ever seen a mistake like this surfing the web? Be sure to vote for your favorite caption and send us your funny photos!

Petition Aims to Make the Pickup the National Vehicle of the United States

Thu, 12 Oct 2017 13:00:00 EST

Here in America, we count the bald eagle as our national bird and baseball as our national pastime. The slot for national vehicle — if there were a slot for national vehicle to begin with — remains unfilled, however, so the backers of a new petition have proposed sanctifying the pickup t

The 19th-Century Roots of LOLspeak and Spam

Thu, 12 Oct 2017 04:00:00 EST

Peculiar language has long been a dividing line between the old and young, and today’s generation is no exception. Specifically, young people who grew up accustomed to online messaging and texting are probably more likely to use acronyms like LOL, ROFL, LMAO, YOLO, lolwut and the like. While

“Baby,” the Prototype for the Davis Three-Wheeler, Emerges for Sale

Wed, 11 Oct 2017 13:00:00 EST

For now, it might very well be a “dirty car that looks like an old shoe,” but the 1947 Davis three-wheeler prototype that just hit the market may be the most significant remnant of one of the more audacious automotive con jobs of the postwar era. In the late Forties, Gary Davis lived hi