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Comments

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UK Ballistics Scientists: 3D-Printed Guns Are 'of No Use To Anyone'

LuxuryYacht 3D Printing is Not Just Glorified Glue Guns (490 comments)

It's sad that 3D printing had become synonymous with FDM or glorified glue guns (GGG). There are lots of different technologies that fall under the umbrella of 3D printing.

Here's a gun that was 3D printed using DMLS (Direct Metal Laser Sintering) for the metal parts and SLS for the grips. It's both durable and viable.
http://www.youtube.com/watch?v...
http://www.engineering.com/3DP...

Here's a few other 3D printing processes that are not FDM glorified glue guns:

SLS
http://en.wikipedia.org/wiki/S...

DMLS
http://en.wikipedia.org/wiki/D...

LOM
http://en.wikipedia.org/wiki/L...

SLA
http://en.wikipedia.org/wiki/S...

about 2 months ago
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With 'Virgin' Developers, Microsoft Could Fork Android

LuxuryYacht Re:How About Also Having a Store Without Registrat (241 comments)

The calculator app was just an example. The point is, why do apps that don't require location, contact lists, browsing history need access to them? We know why they do, so why isn't there built in security to automatically prevent access?

about 5 months ago
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With 'Virgin' Developers, Microsoft Could Fork Android

LuxuryYacht How About Also Having a Store Without Registration (241 comments)

... so that you can buy or try any app just like you would download apps for linux distros, without having to register or give an app access to all my stored info? Why does a calculator app need to access my contact list or location data? Will the results vary based on my contacts or location?

And while you're at it an open source version of Android. I'm happy to pay for apps that I really want but lets at least have a layer of security between applications and stored data, location, call history etc etc

about 5 months ago
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'Download This Gun' — 3-D Printed Gun Reliable Up To 600 Rounds

LuxuryYacht Re:This Won't Work Well With FDM/FFF (582 comments)

They probably don't have access to an SLS printer which will work for an application like this along with the right alloy.

SLA may be used to print the part in one step or print a mold that may be used for lost wax type casting of several alloys durable enough for an application like this.

about a year ago
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'Download This Gun' — 3-D Printed Gun Reliable Up To 600 Rounds

LuxuryYacht This Won't Work Well With FDM/FFF (582 comments)

The resolution and materials commonly available for FDM/FFF are too poor for application like these. The quality of the print is just too poor and they are only using p400 ABS for material. That is why their prints aren't very durable.

SLA however offers the resolution and the materials to produce parts that are strong and reliable enough for these types of rugged applications. Some photopolymers for SLA are 100-1,000 x stronger than the ABS they are using.

about a year ago
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3-D Printed Car Nears Production

LuxuryYacht They Just Need Faster 3D Printers (93 comments)

FDM is slow compared to new SLA, micro-nozzle and inkjet deposition processes. I'm not sure what FDM printer tech from the 80's they are currently using, but by using newer additive manufacturing techniques and new materials they can cut their 2500 hour print time down to well under 250. Inkjet and SLA is capable of print rates in the Liters per Hour and easily down to the 10's of microns of resolution. You just won't find these types of printers sold by the old 3D printer co's sitting on their old 80's tech that they are still trying to squeeze every last day out of their old patents.

about a year ago
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Old Inkjet Becomes New Bio-Materials Printer

LuxuryYacht Re:Patents Are The Problem (39 comments)

Some of the problems are with patenting the obvious or having overlapping patents. Too many patents overlap each other or are painfully obvious that are granted with the idea that these issues should be settled later in the courts. This has led to abuse of the original intent of the system.

If society also decides that patents are only for the purpose of financial gain and the deliberate hinderance to scientific progress and the betterment of mankind then they deserve what they get. Most people are just unaware of the current gaming of the system and don't feel this way.

about a year and a half ago
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Old Inkjet Becomes New Bio-Materials Printer

LuxuryYacht Patents Are The Problem (39 comments)

Inkjets have been used for years to print living cells and also the scaffolding for cells to adhere to. The problem isn't so much the tech but the sea of patents blocking anyone from bringing a complete system to market. When this problem is solved look for rapid progress on many fronts. Until then maybe it will only be available in countries that favor technological progress over nurturing an obsessive compulsion to hoard money that goes unused.

Patents are the problem with tissue engineering, just as it is with other 3D print applications. I'm not against patents. It's just that the current way it's being run isn't working to help move tech progress forward, it only helps a few to make money and also keep control over the rate of progress.

about a year and a half ago
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Chinese Government Appears To Be Blocking GitHub Via DNS

LuxuryYacht It's Right Before the Spring Festival Now (61 comments)

Security seems to be much higher here currently. We are having a more difficult time right now shipping anything such as liquids and chemicals using the local logistics companies within China. I've asked around, and the most common answer is that it's due to it being right before the busiest travel period in China.

about a year and a half ago
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Raspberry Pi vs. Cheap Android Dongle: Embarrassment of (Cheap) Riches

LuxuryYacht Other Low Cost ARM Boards to Consider ... (233 comments)

$49 Cubieboard Allwinner A10 + 512M/1GB DDR3 , 4Gb Nand Flash, 10/100M Ethernet, HDMI, 2 USB Host, 1 micro SD slot, 1 SATA, 1 ir, 96 GPIO pins ncluding I2C, SPI, RGB/LVDS, CSI/TS, FM-IN, ADC, CVBS, VGA, SPDIF-OUT, R-TP
http://cubieboard.org/

£40 Allwinner A10 + 1GB RAM, 4Gb NAND, Wifi: 802.11 b/g/n, 3.5mm Earphone Jack, 1x Mini Usb, 1x Hdmi Out, Micro Sd slot,
http://gooseberry.atspace.co.uk/

$65.00 Allwinner A10 1GB RAM, 4GB NAND, 3.5mm microphone jack, 3.3v TTL 4-pin header, 2 x USB A 2.0, 10/100 Ethernet, Realtek 802.11n WiFi, HDMI up to 1080p, 3.5mm composite AV, 3.5mm component Y/Pb/Pr, SDHC card slot
https://www.miniand.com/products/Hackberry%20A10%20Developer%20Board

$89 Freescale i.MX6 Duallite, 1 GB DDR3, Audio, Optical S/PDI, HDMI, Camera interface, SD Slot, Serial, Expanison header GPIO, USB, USB OTG, GB-LAN, WiFi 802.11n, Bluetooth
http://wandboard.org/

$89 Exynos4412 1.7Ghz ARM Cortex-A9 Quad Core, 10/100Mbps Ethernet, 2 x High speed USB2.0 Host,HDMI, SD Slot, Headphone jack
http://www.hardkernel.com/renewal_2011/products/prdt_info.php

about a year and a half ago
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Fully Open A13-OLinuXino Single-Board Linux Computer

LuxuryYacht There is Also the Cubieboard for $49 (111 comments)

http://cubieboard.org/ and also on http://www.indiegogo.com/cubieboard

It uses the A10 and has more features. The A10 is a full featured version of the A13

1G ARM cortex-A8 processor, NEON, VFPv3, 256KB L2 cache
Mali400, OpenGL ES GPU
512M/1GB DDR3 @480MHz
HDMI 1080p Output
10/100M Ethernet
4Gb Nand Flash
2 USB Host, 1 micro SD slot, 1 SATA, 1 ir
96 extend pin including I2C, SPI, RGB/LVDS, CSI/TS, FM-IN, ADC, CVBS, VGA, SPDIF-OUT, R-TP..
Android, Ubuntu and other Linux distributions

about a year and a half ago
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Slashdot Turns 15, What Are You Doing Later?

LuxuryYacht Re:User ID vs year joined? (247 comments)

Some of us would just visit the site daily without siging up until a couple of years later to be able to submit stories, post or moderate.

about 2 years ago
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MIT Students Reveal PopFab, a 3D Printer That Fits Inside a Briefcase

LuxuryYacht Re:3D Printers (49 comments)

Maybe you haven't seen the SLA printer projects that use lasers or DLP such as LemonCurry for curing photopolymers? Feature sizes are often down to 1 micron per layer and only a few microns for X and Y.

Photopolymers are available in a wide range of properties that are tough enough for use as end products and not just product concept look-a-likes. Photopolymers for inkjet have also come a long way and are also used to create rigid and durable end products with features down to 25-50 microns. What you might be used to seeing are the FDM or FFF (fused filament fabrication) RepRap type printers that print with molten plastics with much lower resolution in the order of 0.3mm.

about 2 years ago
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Additive Manufacturing (3D Printing), Gun Control, and Patent Law

LuxuryYacht What's Different About 3D Printing is.... (380 comments)

that anyone can do it. It doesn't require skills in operating a lathe, mill, grinder or other machine or hand tools. Anyone that can download a 3D file can then just press print and they will have an object. A sharp pointy object or printed parts that might be assembled into a firearm.

This the point people tend to miss when they compare 3D printing to a home workshop. The workshop requires skills developed over time and practice to fabricate something as complex as a firearm. Not everyone is capable of doing this. Unfortunately it is a minority these days. A 3D printer in the near future on the other hand will only require the operator to master downloading a 3D model and pressing the print button.

about 2 years ago
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How Open Source Hardware Is Driving the 3D-Printing Industry

LuxuryYacht Re:Material costs - material generally (199 comments)

The prices of Photopolymers used in SLA type 3D printers has dropped to below the cost of PLA and ABS used in FDM printers and continues to drop. Photopolymers are dropping to under $10/kg in high volumes, so the costs of the materials are becoming less of an issue.

It's true that there are several open hardware printer projects for FDM type printers that focus mainly on printing with one material at a time such as
RepRap or Open Source Photopolymer DLP 3D Printers such as LemonCurry

3D printers are also printing with more than one material and are already printing multilayer printed circuit boards with only fluids. Much of the development work in 3D printers recently has been from open hardwave projects vs the industry since many of the old patents have now expired.

about 2 years ago
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Intel Unveils Tiny Next Unit of Computing To Match Raspberry Pi

LuxuryYacht AMD G and Z Series in eoma68 Also ~$100 + coreboot (194 comments)

There are also eoma68 cards in the works using the AMD Fusion APU's that will only use open source firmware so you won't have to settle for EFI or a closed BIOS as you have to with Intel.

1ghz Dual-Core CPU with AMD Radeon HD 6250 GPU,
http://rhombus-tech.net./amd_g_series/

AMD APUs for Notebooks, Netbooks & Tablets
http://www.amd.com/US/PRODUCTS/NOTEBOOK/APU/Pages/tablet.aspx#3

AMD Embedded G-Series Platform
http://www.amd.com/us/products/embedded/processors/Pages/g-series.aspx
http://www.amd.com/us/Documents/49282_G-Series_platform_brief.pdf

more than 2 years ago
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Raspberry Pi Gets a Red-Tape Delay; Awaits CE Certificate

LuxuryYacht Re:Raspberry Pi already obsolete (135 comments)

I'm not sure where you get your info from about Rhombus but your either misinformed or just plain making it up. The market is mostly high volume OEM's that understand the advntage that Linux, low cost with the full performance they need for their products and markets. These OEM's are already lined up and working with the designs. They are also interested in the low costs due to volume pricing. The complete cards are lower cost than most OEM's are quoted pricing for just the SOC's and DDR3.

There is also an AMD G-Series EOMA68 card as well for about 1/3 the price of the $300 Atom module you mention that can run window$ as well. The AMD G-Series APU card will run circles around the Atom modules in performance as well plus offer 1-2 second boot times from power-on to login prompt since Intel has little to no coreboot support for their chipsets.

  It's not for OEM's that live on hype and brainwashed customers that jump at the marketing gimmicks that lead them to believe they need to spend $800 for a near worthless tablet in order to be a good consumer.

more than 2 years ago
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Raspberry Pi Gets a Red-Tape Delay; Awaits CE Certificate

LuxuryYacht Re:Sounds good. (135 comments)

A 10 year old child will plug the EOMA68 card into the EOMA68 slot in their device such as a netbook, set-top-box etc with the IO board already inside. This should also work for most 9, 7 or even 5 year old children depending on the development of their motor skills.

EOMA68 cards will also come pre-installed in products with integral IO boards.

There is also a Developer IO board and Developer EOMA68 card for people that like to dabble with hardware.

Linux can come pre-installed on the Flash in the EOMA68 card or on a SD-card a plugged into the EOMA68 SD card slot opposite the edge with the 68 pin connector.

Let me know if you need any further info or help with expansion board designs for the Pi. The Pi and the eoma68 cards aren't a competition. They are different types of products that have some overlapping applications.

more than 2 years ago
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Raspberry Pi Gets a Red-Tape Delay; Awaits CE Certificate

LuxuryYacht Re:Raspberry Pi already obsolete (135 comments)

Well you could power them via USB-otg and plug a keyboard into them directly using a USB wallplug power supply for ~$1.

But an I/O board itself for something like a desktop PC would only require a simple PCB ~$1, with TV encoder $0.50ea, RCA jack $0.15, RJ45 jack $0.50 and some passives $1 plus a power supply $2. So under $6 so far.

Add a SATA connector $0.20ea (if you want a HD), and some extra USB connectors for another $1 and larger power supply and you're still under $10 including a somple case.

Fell free to ask me for quotes and reference designs for any types of similar products.

more than 2 years ago

Submissions

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Ammonia to fuel cars for just 27 cents per liter

LuxuryYacht LuxuryYacht writes  |  more than 2 years ago

LuxuryYacht (229372) writes "John Fleming of SilverEagles Energy and Tim Maxwell from Texas Tech University, say they have developed a way to make ammonia that is cheap enough so that it could be used as fuel for cars. The Texas Tech effort seems either based or improved from an electrolyzer Fleming devised for potential use in gas fireplaces. The Fleming designed NH3 processor offers huge cost savings in the production of hydrogen using electricity. The processor is suggested to cost $200 US and is predicted to produce fuel for about 27 a liter, about $1.00 a gallon."
Link to Original Source
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Color Changing Polymer Microspheres

LuxuryYacht LuxuryYacht writes  |  more than 5 years ago

LuxuryYacht (229372) writes "A research team led by a chemist at the University of California, Riverside has fabricated microscopic polymer beads that change color instantly and reversibly when external magnetic fields acting upon the microspheres change orientation.

The beads or "magnetochromatic microspheres" have excellent structural stability. They also are highly compatible with various types of dispersion media such as water, alcohol, hexane and even polymer solutions, allowing them to retain magnetically tunable colors in a variety of chemical environments.

Applications of the new material include display type units such as rewritable or reusable signage, posters, papers and labels, and other magnetically activated security features. The new material also can be used to make environmentally friendly pigments for paints and cosmetics, as well as ink materials for color printing. Video of rotating microspheres"
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Water-Activated Fuel Cell Could Replace Generators

LuxuryYacht LuxuryYacht writes  |  more than 6 years ago

LuxuryYacht (229372) writes "The HydroPak fuel cell is a portable power generator that can provide up to 14 hours of power with a single disposable cartridge. The $20 cartridges are water-activated, and have a shelf life of several years. The HydroPak stems from a collaboration between Horizon's fuel cells and Millennium Cell's "Hydrogen-on-Demand" storage technology. The companies hope to attract consumers and professionals who currently use generators and batteries for their remote power supply needs. The HydroPak could have applications for camping, construction, emergency, and other uses.

  The device, which is still in beta, is relatively inexpensive for a fuel cell product, costing around $400 in addition to the disposable cartridges. The HydroPak also has zero emissions, is lightweight, and operates with minimal noise. A water-activated cartridge can crank out 400 Watts through an AC outlet and two USB ports for 14 continuous hours."
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LuxuryYacht LuxuryYacht writes  |  more than 7 years ago

LuxuryYacht (229372) writes "The PLAICE is an open source hardware and software project that is developing a powerful in-circuit development tool that combines the features of a FLASH Programmer, Memory Emulator and High Speed Multi-Channel Logic Analyzer into one device. The project wiki is at: http://flash-plaice.wikispaces.com/ . It runs uClinux. The logic analyzer features up to 200MHz sampling rates and up to 32 input channels. The logic analyzer Java client features support for up to 200MHz sampling rates, user controlled filtering operations, time line in diagrams, transfer rates, user configurable drawing modes. The Java client supports access via almost any PC with a serial port. The Java client uses the RXTX serial library with support for 34 platforms including Linux, Windows, and Solaris. Java client plugins include an SPI and I2C bus protocol analyzer, timing analysis to state analysis conversion, and post-processing functions."
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LuxuryYacht LuxuryYacht writes  |  more than 7 years ago

LuxuryYacht (229372) writes "The FLASH-PLAICE is a powerful in-circuit development tool that combines the features of a flash programmer, an emulator, and a high speed multi-channel logic analyzer into one device. The project is fully open source for both the software and hardware. The project wiki is at http://flash-plaice.wikispaces.com/ and also found at http://freshmeat.net/projects/flash-plaice . The PLAICE runs uClinux. The logic analyzer features up to 200MHz sampling rates and up to 32 input channels. The logic analyzer Java client features support for up to 200MHz sampling rates, user controlled filtering operations, time line in diagram, metadata (size, rate, and trigger position) stored in files, an ID command for device identification, configurable serial port transfer rate, user configurable drawing modes (logic level, hex value, and scope), and Java client access via almost any PC with a serial port. The Java client uses the RXTX serial library with support for 34 platforms including Linux, Windows, and Solaris. Java client plugins include an SPI and I2C bus protocol analyzer, timing analysis to state analysis conversion, and post-processing functions."

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