Mancave developed this simple to build tumbler for smoothing 3d printed parts. It works best with metallic filaments like Bronzefill and simillar. It tumbles the part with small screws giving it shiny and smooth surface.

Here is the build and operation video:




Here is the video of Coperfill skull being processed and polished:



Shiny and smooth skulls:



Cliff has decided on the name for his new machine: it is AtomX.

Here is the pre-assembly video:



More details and files to build it can be found at:

http://reprap.org/wiki/AtomX

http://www.thingiverse.com/thing:1444061







Cliff is in action again!!! Swedish 3d printing guru designed a new small RepRap and he wants YOU to help him name it! Live him a comment under a video with your idea.
The no-name RepRap is a interesting looking machine that has many 3d printed structure parts that can be produced on a standard sized printbed.




Cliff is well known for his Fubot i1 and Funbot Pro.





It's a nose ring. Get it? NOSE RING...
David Kent Watson 3d scanned his face, 3d printed his nose and used lost PLA casting to make it in aluminum. Cool project. I would wear that ring.

Here is the ring being sand casted:



Project homepage with much more details:

http://dkentwatson.com/art/the-nose-ring/




If you own an Ultimaker or a simillar machine, you will find this very detailed troubleshooting guide very useful. It describes all possible problems and how to solve them.

Here is an example of "Pillowing", problem I didn't even know existed:


Full guide can be found at:

http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide


Here are two DC brushless motors 3d printed for RC cars applications. They reach 36000 RPM and 42700 RMP.

Here is the first version which exploded due high RPM and centripetal forces of magnetic mass:




Here is improved version that reaches even higher RPM:



You can learn more at:

http://sgabolab.altervista.org/thunder-brushless.html




Hyeon Han from South Korea developed smart eye glasses frame with 3d printing shell. He named it “PICK glasses 3.5”.
It features a very small custom PCB (45mm x 10mm), Arduino, vibration motor, acceleration sensor, serial port (TTL), battery charger and Bluetooth 4.0. There is no description of what it actually does but if you have a platform you will find a purpose :-)





Han's blog with project description:

http://baehyunhan.tumblr.com/post/139110072315/my-smart-glasses-project-pick-glasses-35-pcb

For a MUCH more cyberpunk project take a look at:

http://diy3dprinting.blogspot.hr/2013/11/dyi-3d-printable-google-glass.html

Vortex generators are small vanes that are mounted on various vehicles, mostly aircraft, to improve their aerodynamic performance. In theory they could be installed on a car and improve the fuel economy and increase MPG (or lower the liters per 100km for us Europeans).
Since they are easy to make and design, there are several 3d printable models. They are also very cheap so you can make dozens for a few dollars.

Samm Shepard 3d printed vortex generators and made road tests with good results. He also explains a science and aerodynamic principles behind it.



He used the F86 vortex generator:

http://www.thingiverse.com/thing:785398

Kyle also does a great job in simplifying the science behind it and also has real-life tests with positive results but claims they are only useful on high performance cars.



Autospeed magazine did some testing and achieved positive results in 2006:
Vortex generators on cars can achieve measurable, scientifically proven improvements in car aerodynamics – reducing both lift and drag. The Lancer Evo is probably the shape of things to come – expect vortex generators (of whatever design) to be used on new cars, especially to improve the flow around corners towards the rear of the body.
Positive gains can be achieved only by practical experimentation. That’s the downside – the upside is that the vortex generators are easy to temporarily stick into place with masking tape, and just as easily removed if they are not achieving the desired results. They’re also cheap enough that buying ten or so for experimentation is a good investment.
But they did have some negative results if they were placed on wrong places.

Source links:

http://www.autospeed.com/cms/article.html?&A=113217

http://www.autospeed.com/cms/article.html?&title=Blowing-the-Vortex-Part-4&A=113219

GFY racing uses 3d printed vortex generators on race cars:




https://gfyracing.wordpress.com/2014/06/27/3d-printed-parts-2/


One of the commercial vortex generator producers, AirTab, did some testing and they achieved significant improvements on trucks. Due to their box shape, their aerodynamics is very bad.

































Several research papers, like this one by MIRA show that the fuel savings can reach up to 3% with installed vortex generators.

There are simillar 3d printable models like this one: http://www.thingiverse.com/thing:1251022


Here are vortex generators mounted on a Sprinter van:


And user experience of RV owner:



Since vortex generators are easy to 3d print and easy to install and uninstall they could be great gadget to experiment with and see if you can save some fuel.


Wikipedia page:

https://en.wikipedia.org/wiki/Vortex_generator

If you want to learn more on how to increase fuel efficiency of your car and get more MPGs here is a modder community with tons of useful posts and articles:

http://ecomodder.com/forum/fuel-economy-mpg-modifications.php

They use 3d printers also to make custom car parts:

http://ecomodder.com/forum/showthread.php/im-making-custom-car-parts-3d-printer-30670.html

... like this custom shift knob with engine cut off switch:



This guy made a desktop jet engine made with many 3d printed parts and burning chamber made from refractory cement molded with PLA 3d printed mold. He also used a skateboard bearings, sheet metal and an electric starter, all powder with lighter fluid!?

Here is a video of the engine running and being taken apart:




Here is a test at 40k RPM:



Project homepage with complete construction manual book to be released:

http://amazingdiyprojects.com/

If you think its very hard to make a DIY turbine jet engine you will be surprised that it was done many time even from junkyard parts like this one:

http://www.junkyardjet.com/

Stay safe!



Jeremie Francois developed his own method of automatic print bed leveling and calibration by using some force sensors, Arduino to communicate with modified Marlin firmware and three Z-axis lead screws.

Here are videos of his set-up in action:






Project homepage with detailed guide:

http://www.tridimake.com/2015/12/tribed-fully-automatic-bed-leveling-and-z-offset-adjustment.html

The project is still in development and further improvements are expected.

Source:

http://hackaday.com/2016/01/31/tribed-3d-printer-configuration-doesnt-ever-need-to-be-leveled/

FSR sensor on the bottom plate next to a Z screw





























You can learn more about Force Sensing Resistors here:

https://en.wikipedia.org/wiki/Force-sensing_resistor


Justine shows how to get a smooth surface on your 3d print with some help of thermal transfer tool which is somewhat simillar to soldering iron. It is used mostly by woodworkers to etch or scorch a pattern with heat into the wooden surfaces Results look good.





This thermal transfer tool has a larger round surface 


Trinus is a new 2-in-1 solution with option for user to mount 3D printer or laser head.

Tech specs:

  • Print Volume: 120mm x 125mm x 125mm
  • Print Speed: up to 70/mm
  • Minimum layer height: 0.05mm(50 micron)
  • Print Material: 1.75mm PLA,  ABS
  • OS Supported: Windows, Mac
  • Conectivity: USB, SD Card (autoprint)
  • Power consumption: 60W
  • Weight: 9.8kg


For more see:

http://www.trinus3d.com/

It will be on Kickstarter soon, you can get if for 199 USD as a super-early-bird offer.

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diy VRAY VISOPT new diy 3d printer SKETCHUP MODELS HOUSES - VILLAS how to SKETCHUP MODEL LIVING ROOM low cost software open source arduino electronics instructables cnc SKETCHUP MODEL BEDROOM 3d printed robot europe guide VRAY PROXY kickstarter SHOP fff tutorial SKETCHUP MODEL DINING ROOM SKETCHUP MODELS CHAIR & EASY CHAIR education 3d printed toys fun hack resin robot sound space 3d printed weapons CHALLENGE SKETCHUP MODEL KITCHEN art home manufacturing large printer music open source 3d printer pop culture reprap ultimaker wearable 3d model 3d printed buildings 3d printing materials SKECHUP MODELS TABLE SKETCHUP MODEL BATHROOM delta 3d printer humor tips 3d printed music instrument 3d printing filament 3d systems VRAY TUTORIAL BASIC car cnc mill comic design eyewear heated build platform multi color multitool nylon paper print bed sla stratasys upgrade 3d printing in cement 3d scanner Switzerland adafruit australia cad controller cool things to 3d print extruder germany indiegogo large models medical applications of 3d printing mold repair review syringe video 2016 CES HDRI NASA OpenSCAD SKETCHUP MODELS FURNISHING ACCESSORIES SKETCHUP MODELS OFFICE FURNITURE TEXTURE aircraft android concrete dlp drone family filament extruder food formlabs furniture game google glass house household items hybrid i3 india keyboard laser optics pellet prosthetic prototype prusa raspberry pi science sls stereolithography tool uv 3d printing waste water web app 3d printer crime 3d printing on battery power BACKGROUNDS Future NEWSLETTER VISMAT VRAY SKETCHUP aluminum animal app aquaponics bluetooth camera casting ceramic clay desktop production disney diy science ecology energy generation engraver eye glasses fantasy figure hydroponics italy jet engine mcor metal 3d printing ninjaflex pcb milling pet pets pick and place plant plastic welding plywood polishing problemsolving rail recycling replacement part satellite school sf smoothing speakers sweden test 2014 3d printed airplane 3d printed car part 3d printed food 3d printed gun 3d printed uav 3d printer review 4d printing 5 axis Autodesk CUT OUT PEOPLE MIT Marlin Netherlands PS TUTORIAL SKETCHUP 3D MODEL VEGETATION Spain UK USA abs archery asia automation bed leveling bicycle biohacking bottle calibration chocolate composite control unit copyright creative commons dc motor digital fabrication disabled dremel enclosure fdm filament fire foldable form 1 garden ge history hype industrial injection molding insects jewelry laser cutter laser cutting law lens linux mach3 metal casting military modular multi materials open source hardware outdoor pen play-doh polyurethane problem repstrap router sand scara seemecnc selective laser sintering servo shapeways slicer solder speed support material thingiverse toy tv ultrasonic v-slot visualization weapon web web interface welding wifi windows wireless 3d printing wood wood frame 3d printer 2d to 3d 3d copy 3d drawing pen 3d print platform 3d print quality 3d printed sensors 3d printed vehicles 3d printer desk 3d printer stand 3d printer table 3d printing 3d printing wood 3d printshow 3d startup 6 axis Czech Republic ESA France GRAPHIC DESIGN ELEMENTS Intel Galileo Korea MDF Objet PETG Printrbot SKETCHUP 3D LIQUID SKETCHUP MODEL BABY - GUYS FURNITURE SKETCHUP MODEL LOFT & APARTMENT SKETCHUP TUTORIAL Shapeoko Singapore Slovenia TED VR VRAY TUTORIAL EXTERIOR VRAY TUTORIAL INTERIOR abs juice acetone acrylic africa air airwolf3d all-in-one apple armour arrow automotive batteries bedroom bioprinter blacksmith blender blind bronze brook drumm business buying home cardboard ccc cell cerberus children china closed loop cloud cody wilson community company tour cooling cosplay cubesat customized daily use data delta demonstration denmark drill dual extruder e3d economy environment etching fashion filabot filaflex firmware flexible ford friction welding fumes gartner gears general glass glue google graphene harvard hdpe heat chamber hungary ikea industrial 3d printer intellectual property ip rights japan k8200 kai parthy kinect laser sintering lcd led lego leveling library linear actuator liquid london lost pla casting lulzbot magnets make makerfarm prusa making money with 3d printing manufacturing map market metal filament metal hot end mexico microscope microsoft mix mobile 3d print control mobile factory model quality modification molecule moon nanoparticles nature news nfc ordsolutions parametric paste patent pcb photography plasma cutter plotter poland polyjet portable 3d printer portugal powder 3d printing presentation printhead process prosumer pump pvc pipes quadcopter reddit repetier replicator reprappro retro rings robo 3d rocket rostock max rubber rubber band russia sea security self assembly setup sharing slic3r smartphone solar south africa spaceX star trek steel stepper students surface tablet taiwan ted talks temperature testing textile titanium type a machines uav ultimaker 2 university usb user interface velleman virus wanhao wasp wasp 3d printer watch wind generator wire workspace xyzprinting