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3D Printable DIY Scuba Diving Thrusters

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Someone developed low-cost 3d printable underwater thrusters for scuba diving. There is a full set of instructions and files available.


Tech specs:

  • 1.85 mph underwater speed! 
  • 20 minutes runtime. 
  • $153 for flying underwater at speed of 3 km/h
  • DT700 brushless motors: 2 pcs x $14
  • Kort nozzle for DT700: 2 pcs x $35
  • ESC speed controller at least 40A with BEC: $4
  • Servo tester: $5
  • Slide Potentiometer any from 5K to 30K Linear: $2
  • SLA battery 9Ah: 2 pcs x $22



Here are the thrusters in action:





Detailed construction guide and all the files:

http://www.instructables.com/id/Underwater-Wrist-Thruster-185-Mph/

Hackaday.io project page:

https://hackaday.io/project/27134-arm-underwater-thruster




DIY Multi Extrusion Tool Switching by Rolmie

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Rolmie from Germany is developing a multi-extrusion tool changer suitable for many common 3d printers. Interesting project you may want to follow up.

Project description:

Single and dual extruder FDM printers are commonly available these days but machines with support for 3 or more hotends are still hard to find. The current approach to dual/multi extrusion is either a XY carriage moving multiple hotends or a single hotend with several filaments feeding into it (eg. E3D Cyclops, Diamond Hotend, Prusa i3 MK2 Multi Material).
Both designs have their own limitations with regard to scaleability. For the first it is size and weight of the carriage, the second requires all materials to be within a similar temperature range.
This design overcomes some of these limitations and requires only off the shelf components (pins, bushings, magnets), 3D printed parts and most importantly no additional motors, servos or other electrical components. Modification of most CoreXY/H-Bot style printers should be possible

Prototype video:




Project page:

https://hackaday.io/project/26053-tool-switching-multi-extrusion


Tool head making a contact with on of the extruders

Cutting Acrylic with EleksMaker Laser on HyperCube 3D Printer

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Chris from Tech2C YT channel made a video showing various settings on his EleksMaker 2.5w laser diode for cutting a 3mm Acrylic sheet. It is mounted on HyperCube 3D printer.
It is an interesting video if you want to go into lasing acrylic with a cheap laser diode and you want to learn something and save some experimentation time.







Tip from the comments: black acrylic is easiest to cut since it absorbs the most energy.

HyperCube 3D Printer/CNC on Thingiverse:

https://www.thingiverse.com/thing:1752766

New Prusa I3 MK3 is Released!!!

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The original Prusa I3 Mk2 is one of the best 3D printers currently available and it just got better with the new version: the MK3.
It features many improvements and cool upgrades that go beyond what many much more expensive machines have.

New features:
  • Filament sensor
  • Power Panic
  • RPM sensing fans and Noctua
  • Ambient thermistor and P.I.N.D.A 2 with thermistor
  • EINSY RAMBo motherboard
  • Trinamic2130 drivers with layer shift detection, faster and silent printing
  • New Y axis
  • Bondtech extruder
  • Magnetic MK52 Heatbed
  • Powder coated PEI spring steel print sheet
  • Ready for OctoPrint
It will be priced at $749


MK3 presentation video:










MK3 release post with all the details:

http://www.prusaprinters.org/original-prusa-i3-mk3-bloody-smart/



Two Great Surface Finishing Tutorials

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I was researching YouTube to find some good surface finishing, smoothing and painting tutorials, here are the two good ones I found.


First one is from Jure Korber from Slovenia. He made this detailed tutorial and has some good tips like the using of wooden stick to hold the piece.





Second is from Commando Designs



Hopefully, you found them useful!

3D Printed Military Submersible

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Engineers in ORNL made military’s first 3D-printed 30 feet long submersible hull made from carbon fiber composite material.
The Optionally Manned Technology Demonstrator is a prototype vessel that could be used to deploy divers, logistics capabilities, and sensors. It was made much cheaper and faster when compared with traditional manufacturing methods.

We don't need more weapons guys. We need more technology for permanent peace.





Source news release with more information:

https://energy.gov/eere/articles/navy-partnership-goes-new-depths-first-3d-printed-submersible

Thomas will show you how to fix your filament

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He will also teach you how you can ruin it in the first place...


Best Slicers for 2017 by Maker's Muse


Decentralize your DIY projects with LBRY

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If you consider yourself a part of DIY or 3D printing community you most certainly regularly look at other peoples projects or publish your own work on some platform like YouTube, Thingiverse or Instructables. There is an incredible amount of knowledge and value being contributed by users every day but do they get the fair amount of value back from those platforms?

Since all of the biggest platforms are privately owned, what would happen if those companies decided to close them for any reason destroying all the content in the process? Or decided to charge you a fee for publishing your content or decided to remove your content for some arbitrary reason ... or got hacked ... thee are many very negative outcome scenarios since there is too much power accumulated within a single point of failure. Currently, many YouTube creators in DIY space are faced with random demonetization and there have been major problems with Thingiverse in the past.

Is there an alternative? Looks like there is! It is a decentralized, open-sourced blockchain based system named LBRY (Library). With LBRY there is no middleman.

LBRY is best described as a content platform (YouTube or Thingiverse) that works similar to a BitTorrent network where each user downloads and re-publishes the content he viewed.


You can read the full description here:

https://lbry.io/faq/what-is-lbry


Or watch this short description video:



LBRY is currently a great platform for video creators who want to increase their reach, secure their presence, improve monetization and are not satisfied with YouTube policies and uncertainty due to demonetization or censorship. If you are an existing YT creator, there is a simple YT import procedure you can find here:

https://lbry.io/youtube


The application interface is simple and easy to use, here is a short overview by Wayne Beach:



In the future, there will also be a mobile app available.


LBRY is not only for video, you can also publish all your project files, code or any other digital format on the Library app. LBRY is open sourced so it can be used in a variety of roles as a specialized platform. One current implementation is spee.ch website which "takes" the content from the LBRY chain and acts as a decentralized image hosting site. Any developer could use the technology and develop a web browser accessible Thingiverse alternative for 3d printing files.

Publishing .STL files is very easy, just click on the green "Publish"icon in top right corner:





Your content can be monetized with LBRY credits cryptocurrency or you can receive tips for your work. LBRY crypto can be exchanged on many exchanges for Bitcoin or the regular money.

Do keep in mind that LBRY is still under development with a constant stream of new improvements and features being added. I know that most of you are more than capable of using this type of software and even give some feedback to the developers to make it even better.

Now go and give LBRY a test run to distribute that great content you made!!! Sharing is caring!

https://lbry.io/


For more in-depth insight, have a look at this interview with LBRY CEO Jeremy Kauffman by Bryan Lunduke:


3D Printed DIY Arrowheads by Juleah

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Making your own archery equipment is one of the essential skills any archer should master. Here is a cool and useful DIY project made by Juleah, where she used a 3d printer to make printable arrowheads or field points.


Here you can see two videos detailing the entire target testing and improvement process:





The final version of horizontally printed points is strong enough to go through soft hay targets.








You can find out more about Juleah and her work at:

http://bestjuleah.pen.io

STLs for the field points can be downloaded via the LBRY.io application:

lbry://@BestJuleah#66bdae2ef9d62e812731b9dfca33e966771592b4/3d-print-arrowhead-stl

(LBRY is for the users who prefer open-source decentralized content distribution)

Or, if you prefer corporate controlled site, on Thingiverse:

https://www.thingiverse.com/thing:2663794




Water Cooled E3D Titan Aqua Hot End

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E3D just presented their water-cooled hot end: the Titan Aqua. The primary usage scenario for the water-cooled hot end is in 3D printers that have heated chamber or passively heated enclosures.


Presentation video:




More about this water cooled extruder can be found at:

https://e3d-online.com/blog/2017/12/20/water-is-cool/

Please support this blog!

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Dear readers

Hi there

You, yes you! You make this blog worth doing.

Thank you for your participation and all the feedback I get.

Did you find something interesting here? Something useful? Great!

As I am currently unemployed and decided to remove all advertisement from this blog, please support my work so I can continue to bring great content to the 3d printing community.

So if you have some extra cryptocurrency (banking is very hard in my country) and you would like to support this blog, you can donate to following addresses:


Bitcoin (BTC): 1KorRf3kW6JRe9PMvrTRDuaaVvFb4LU8dF


Bitcoin Cash (BCH): 1NRPuMhbgEh7nR266TEKUpVMdhN7wDKWLb


Dash: XwAPDiPD5pv9PMMXyWyXavhpFTukvQcMcD


Decred: DsnGeQL3usaLdzbHL54vsQDv84Hgs682ULa


Litecoin: LYyYpjxAegMzx5Yj2WfD45kx4rX2ZsK3vP


Ethereum (and ERC20 tokens like Golem, Augur, Civic, BAT, OMG, Substratum etc.):

0x1a8d4A3aaE3F7980f77aE22E9502705e5777AdF4


Ethereum Classic: 0x60122d04D1E43d5120BB5DF45f8Bef6bC4De0d9b


Ripple: rUf5bsEBXnkAKUstqtfrFtQnTiiwzraV9o


Factom: FA2uQPWYtaES18c6bKhqoUZezijZVT7P7vWNVFp9AGwtfFXbcUdH


ZCash: t1bUNpgA28eX8wbDqD4HwkZq1KifLydtgJ1


Vertcoin: VtA4hPje58JAmCAGmn9sJjYVX6ngkV9KVR


LBRY Credit (LBC): bNqiPEre1NtK7ZMx4QyYm7cuFa1x3jYuk3


PIVX: DRY41Wsz7NBditUhFTWpgiLaPREBNWMmcJ


Verge: DTVxLeGq71C2RnaJa6sR7xTFHeW64PwoNH


Gridcoin: SFLkaMdogGAx4hBJdXfv6DXe3u1B36rJd4


Your donations will be used to pay my internet connection and electricity.

Thank you!

Best regards,

Lav

You can send me any feedback or suggestions to: manastir (at) gmail (dot) com

New versions of GCodePrintr and GCodeSimulator Just Released!

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3dprintapps.de just released a new version of their 3D printing apps GCodePrintr and GCodeSimulator.

Version v3.0 comes with many improvements and several new features, which will help to maximize the capabilities of your 3D printer.
GCodeSimulator App is the free sibling of the paid GCodePrintr App. Both together have been downloaded from Google Play more than 50000 times and are actively used by more than 6000 users.

The new version is available on Google Play now (staged rollout just started).
GCodePrintr on Google Play: https://play.google.com/store/apps/details?id=de.dietzm.gcodesimulatorprinter
GCodeSimulator on Google Play: https://play.google.com/store/apps/details?id=de.dietzm.gcodesimulator

Most important changes:

v3.0 comes with dual extruder support!

  • Dropdown list to quickly select an extruder
  • Show temperature for each extruder
  • 3D view colored by extruder
  • Calculate extrusion by extruder
  • and more

GCodePrintr v3.0 comes with several improvements to the UI interface:

  • Customizable button to quickly access your favorite macro.
  • Dialog to enter customer step size for manual movements
  • Dialog to control Fan speed (long press on Fan button)
  •  New status dislog to see status of printer connection, web interface, network receiver...

The web interfaces design has been refreshed and is now using a responsive web design. Additional functions added:

  • upload gcode through the web interface and start a print remotely.
  • use the build-in camera to show a picture of the print
  • manual axis movement and homing  
  • and more   

Extend the list of supported 3D printers and printer electronics:

  • New printers added to supported list (e.g. Tevo Tornado)
  • Better print time estimation by taking M201 acceleration into account
  • Add fallback for unsupported USB devices (e.g. unknown VendorID)
  • Send line numbers and checksum to the printer  
  • Gbrl improvements


Many usability improvements (e.g. new help dialogs) to simplify the 1st time use of the App.

See http://3dprintapps.de/version30.html for a full list of changes.

LulzBot Cluster 3D Printer Manufacturing Farm

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Lulzbot presents their Lulzbot Cluster for manufacturing of 3d printed parts. It's an interesting video that shows the technology and how it evolved and scaled up.


LBRY 3D Printing and Design Contest - Win some Cryptocurrency!

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I wrote about LBRY before as a great possibility to decentralize your DIY projects and keep them out of corporate controlled platforms. Here is one example of archery project uploaded by Juleah.

LBRY just announced a small 3D printing and 3D design contest with cryptocurrency rewards. Here is the summary:
Design a chess set that sparks our imagination & win $100 in cryptocurrency. Upload your chess set design (use a zip folder for multiple files) in either STL or OBJ format to the LBRY (library) network. Once finished, email the lbry:// address (automatically receive 10 Library Credits for your first upload) to james@lbry.io by July 4th.
You can win 100 USD for the first place and 50 USD for the second place paid in LBC cryptocurrency. 

Here is the link to the full post with detailed contest rules: https://lbry.io/3d-contest

Good luck!




Printrbot Printrbelt Working

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Printrbot Printrbelt is making some nice progress. It is a continuous conveyer belt 3d printer that can print some long objects. New videos and features are released and here is a short overview.


Here is a 6 foot long sword:





Here is Wiliam Steele from Polar3D showing how the software control is implemented on Printrbelt:





Printrbelt producing many smaller objects (gliders) in a series:

Cytosurge Improve their FluidFM µ3Dprinter with Pinpoint Accuracy Tech

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I wrote about Cytosurge technology before. They developed a 3D printer that can print metal on the micro-scale. A true technological wonder. Just imagine small robots floating in your bloodstream to repair your body or extremely complex and fine electronic parts like micro-antenna arrays. Star Trek stuff. This is a technology that makes a large step towards that future. 
The company has now improved their machine with ability to print directly and precisely on complex surfaces like existing electronic component boards or microchips. 































Tech description:

The new pinpoint metal additive manufacturing process is made possible by two high resolution state-of-the-art cameras integrated into the FluidFM µ3Dprinter. The cameras enable automated loading of the print tips (FluidFM iontips), printer setup, calibration and computer-assisted alignment to print on already existing structures as well as the visualization of the finished structures. The bottom view camera is mainly used for internal system processes, like controlling the automated gripping of the FluidFM iontip. The top view camera images the object or surface to print on. With the high-resolution live video, the exact position of the object or surface to be printed on can be manually chosen and set as starting point for the printing process.
This procedure allows the user to print metallic objects on contact pads that are pre-defined on the surface of an integrated circuit, on micro-electromechanical-systems (MEMS) or on other components.
This unique capability of the FluidFM μ3Dprinter to add 3D printed structures directly onto existing objects or surfaces with pinpoint accuracy opens the door to a new world of additive manufacturing of complex metal objects.


You can learn more about this amazing tech at: http://cytosurge.com/

Ivan takes his 3D printed tank for a ride

Dexter High Precision DIY Robot

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Dexter is a high precision 3d printable robot that can be trained by the human operator.

Hackaday summary video:




Detailed videos showcasing the robot's features:




Hackaday project homepage:

https://hackaday.io/project/158779-dexter


Project description:

Dexter is an open source, 5+ axis robotic arm. It is built from 3D printed parts and held together with carbon fiber strakes for reinforcement. Dexter uses five NEMA-17 stepper motors with three harmonic drives in conjunction with optical encoders to get extreme precision, with a 2.5 micron stepping distance and 50 micron repeatablity. 
Dexter is also trainable, meaning that you can manually control it and have playback of the exact path it took. This makes it easily programmable for applications.
Dexter can also be controlled with our software, Dexter Development Environment (DDE). DDE utilizes a modified version of JavaScript that allows for a more traditional approach to programming while still being friendly to those who are newer to code. It also contains a simulator that will show playback of Dexter's movements using a pane in the development environment.
Dexter even has a Unity library that one of the members of the Dexter community put together, complete with haptic feedback. This could potentially be used for video games or even real world applications where a Dexter must be remotely controlled

NASA 3D Printed Mars Habitat Competition Projects

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