Showing posts with label laser cutting. Show all posts
Showing posts with label laser cutting. Show all posts

Future Fabrication at MIT's Center for Bits and Atoms

If you are technology and science nerd you have to see this tour of MIT's Center for Bits and Atoms.

This is the place where some amazing tech is being developed for real world application purposes.
You will see some advanced gene editing, micron level 3d imaging, and manipulation, micron level laser cutters, molecular assemblers and nano machines.  


Part 1





Part 2




Some very very cool stuff kids!!!


MIT Center for Bits and Atoms homepage:

http://cba.mit.edu/

Source:

https://youtube.com/user/testedcom

Amazing Laser Cut and 3D Printed Art by John Edmark

John Edmark creates the most amazing art pieces inspired by fractal geometry, spirals and natural organic shapes using laser cutting and 3d printing.





The laser cut movable tentacle gripper from plywood is something I would like to make...


The art of John Edmark is described in depth in this talk by Paul Dancstep:




Artist's homepage with detailed presentations of many sculptures:

http://www.johnedmark.com/



DIY 3D Printer Enclosure with Iris Mechanism

Youtuber "NerdVille" from UK made this 3d printer enclosure with nice iris mechanism on top that enables easy movement of filament tube and printhead. The heat doesn't escape and it improves the print quality.
The video also features design phase so it is extra interesting. The final version of eclosure is laserut from acrylic sheets.


Project video:



I really like this iris solution!!!



LaserStacker Makes 3D Objects by Laser Cutting and Welding

Researchers at Hasso Plattner Institute have made several 3d fabrication project with laser cutting and other methods. Here is the new one: LaserStacker where they use a laser cutter to weld together 3d objects.
They even made functional scissors.




Project description:
LaserStacker uses the laser cutter to not only cut but also to weld. Users place not one acrylic sheet, but a stack of acrylic sheets into their cutter. In a single process, LaserStacker cuts each individual layer to shape (through all layers above it), welds layers by melting material at their interface, and heals undesired cuts in higher layers. When users take out the object from the laser cutter, it is already assembled.
This is a project from the Human-Computer Interaction Lab at Hasso Plattner Institute.
More Information:
http://hpi.de/baudisch/projects/laserstacker.html
LaserStacker is a research project by:
Udayan Umapathi, http://www.udayan-u.com/Hsiang-Ting Chen, http://www.ht-timchen.com/Stefanie Mueller, http://www.stefaniemueller.orgLudwig Wall,
Anna Seufert,
Patrick Baudisch, http://www.patrickbaudisch.com


Earlier project:



GE has 3D printed a working small jet engine

New advancement from GE where they managed to 3D print fully functional small metal jet engine. It runs up to 33,000 RPM. Soon someone will make open source version of it. That would have some interesting implications.

Here is a video about it:



Read more about it at:

http://www.gereports.com/post/118394013625/these-engineers-3d-printed-a-mini-jet-engine-then


Laser sintered jet engine parts

Combining laser cutting and 3d printing for faster manufacturing

Platener is a project from team working in Hasso-Plattner Institute that combines laser cutting of simple surfaces and combining them with 3d printed complex curved parts to get very fast manufacturing or prototyping.




Project homepage with more information:

https://hpi.de/de/baudisch/projects/platener.html

They have previously developed faBrickation 3d printing with Lego bricks and WirePrint for wireframe objects.




Emerging synergy of lasers and 3d printers with real-time scanning and cutting

What is cooler then lasers? Well, lasers and 3d printers combined! duh! At some time at past I have argued on some forums that lasers will become integral parts of 3d printers and I was met with lot of opposition. There have been some attempts to integrate laser based 3d scanners into 3d printers even in commercial products but it is far from wide acceptance.
Yet, adding a laser with sensing electronics can give you so much more then just cheap 3d scanning.

Here is a video by Claudio Di Leo, MIT student, who attached a Infiniter VLM-650-27 line laser to a Solidoodle which uses a 2MP web camera to scan printbed enabling it to 3d print on place object. The entire upgrade costs some 50 USD but increases the ability of the machine.




Now, what would happen if you turn up the power on the laser?

There are several simple DIY laser cutter projects based on replacing the extruder but what if a laser cutter would be a separate tool moving independently?

Here is a video demonstration of laser cutting 3d printed PLA object. As you can see it can be done easily.




Here is a project with detailed guide and software on how to make springs with a laser cutter from different materials but also features PLA 3d printed tube:



Here are detailed instructions for spring laser cutter:

http://www.instructables.com/id/Laser-Cut-Helical-Springs/?ALLSTEPS

So, what could we achieve if we integrate active lasers into 3d printers:

  1. 3d scanning
  2. real-time scanning of print volume for continuous 3d print calibration, sensing failure and continuation of aborted prints
  3. 3d printing on objects attached to a print surface
  4. laser cutting printed objects giving new dimensions to 3d printed objects
  5. "standard" laser cutting of sheet materials, engraving and PCB processing
This could be the next big thing :-)




30mm Acrylic Cutting with OMNI Laser Machine

OMNI laser engraving and cutting machines are mainly for non-metal material by higher precision processing way,suitable for vector cutting, raster engraving, sign making, displays, sheet fabrication, textile fabrication and cutting, name plates, outdoor advertising and more.
Today, we introduce OMNI1326 Laser machine, which could fit 80, 100, 130, 150w laser tube. 

The following is 30mm acrylic cutting video. 



There are several tips:
  • Speed: 0.5mm per second
  • Power: 65% for power, use at least 130W laser tube
  • attention of air out volumn
  • Be notice that do not let laser burn the acrylic
  • Good quality lens and mirror is important


Check out for the laser cutting machine for more features and parameters.

Sample:

30mm acrylic



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Constructable - laser pointer guided laser cutter

Smart people of Uni Postdam made this hand guided laser cutter. User draws with laser pointer and laser cutter follows the path. There are different laser pointer types for different materials which trigger different operations by laser cutter.







Project homepage:

http://www.hpi.uni-potsdam.de/baudisch/projects/constructable.html

Detailed paper in PDF:

http://www.stefaniemueller.org/wp-content/themes/f8-lite/images/constructable/2012-uist-mueller-lopes-baudisch-constructable.pdf





How to upgrade your 3d printer into laser cutter or engraver

Adding laser cutting or engraving to your 3d printer will make it into much more powerful tool and let's face it: everything is infinitely cooler with some lasers on it.

Here are two solutions if you want to transform your 3d printer into tabletop miniature Death Star and decide to laser cut / engrave some shapes or engravings into balsa, acrylic, Mylar or other suitable material ...

Universal Laser Attachment for 3D Printers Stand Alone System


Is freely available rough project with code and schematics published on Thingiverse. You will need more hands-on previous experience with Arduino programming, electronics, soldering, laser diodes and putting it all together.































http://www.thingiverse.com/thing:140663
by James Sesler (http://www.youtube.com/user/MrInventWorld?feature=watch).
It is work in progress and further upgrades and refinements are possible.


Laser-Bot Personal Manufacturing System by J Tech Photonics


This is more advanced finished commercial laser kit with laser diode and amp driver board that is compatible with several printers like some RepRaps, Makerbot Replicator 2 and 2X, Felix Printers and Makerbot Thing-O-Matic.
They provide their own G-code "LaserEngraver" plugin to convert Inkscape drawings.


Laser Bot hardware setup 

Laser Bot workflow




















































Here is their laser kit cutting balsa wood:





Here is a video of it in action cutting thin Mylar transparency film sheet into soldering stencil.






Laser diode head























































Kit is priced slightly over 220 USD.

Technical specifications from product page:

This kit is a combination of the popular 1.7W 445nm Laser Diode Component and the 2.0 Amp matching laser driver kit with a 12V adapter. This includes everything you need to get your laser up and running in your product or project. We now even cable the laser with a Mini Fit Jr. connector at 2.5 feet to make it even easier to hook everything up! The kit includes:
1.7W 445nm Laser Diode Component (now with 2.5′ Mini Fit Jr. Connector Cable included)
2.0 Amp Adjustable Laser Diode Driver Kit, 8V Compliance
Power Adapter 12V 2A, US Style Plug
Laser Specifications:
This multi transverse mode laser diode component is pressed fit mounted in an aluminum housing and has an aluminum mountable heat-sink. The front of the component contains a glass collimating lens for the laser output.
Absolute Maximum Ratings:
Item Absolute Maximum Ratings Unit
Forward Current (Tc = 25°C) 1.7 A
Allowable Reverse Current (Tc = 25°C) 85 mA
Operating Case Temperature 50 °C

Electrical / Optical Characteristics
Item Min Typ. Max Unit
Optical Output Power 1.6 W
Dominant Wavelength 435 455 nm
Threshold Current 80 220 mA
Operating Voltage 3.7 5.5 V
Beam Divergence Full Anlge (1/e^2) // 5 14 25 deg.
Beam Divergence Full Anlge (1/e^2) – Perp 30 44 50 deg.
Driver Overview:
2 Amp Version, 12V adapter Kit
This version of the popular High Current Laser Driver offers up a lot of current in a small package for an excellent price. The design team perfected several versions of this driver to give a quality current source with a large compliance voltages with both adapter choices to be able to work with most every laser diode. They packed it with multiple features and made it capable of interfacing with even the oldest of your equipment in your lab or the newest wiz bang in your product or system. This version includes a 12V power adapter that will provide 8 volts at maximum load of 2 amps. This can be used to power higher voltage laser diodes in the 4-7 volt range like the 445nm laser diode component. It can also power IR laser diodes in the 2-4 volt range, but it might need additional cooling fan if left on for extended amounts of time.
This driver will provide 1 amp of constant regulated and protected current to the diode. Configurable current limits with jumpers for 0.5 and 1.0 amp settings and adjustable output with an analog trim pot. It also can be remotely controlled with an opto isolated input with a super huge range of acceptable voltages for turning your driver on and off. Does your equipment in your project or system that you want to interface with have backwards logic? No problem! There is a jumper for choosing inverted or non inverted logic as well! Perfect for integrating into any final product or project.
Features:
High power current source for driving Laser Diodes and Light Emitting Diodes.
Current Range of 2 Amps.
Current Ranges are adjustable in 500ma increments.
No need for extra cooling at maximum load. (depends on power adapter and compliance voltage.)
Soft start for diode protection.
Reverse diode and ESD protection.
Thermal Protection and Over Current Protection.
Compact Size.
CW Mode and Input Control Mode.
Digitally isolated control input.
Control from CW to 5KHz.
Configurable Input signal: Inverting /Non-Inverting.
Multiple connector options for both Laser/LED output and control input.
LED status lights for input laser enabled and laser on.
Optional fan for extra thermal stability.
Specifications:
Specification HCDBSA 2 AMP
Current Source Range: 0 – 2 Amps
Current Limit Jumper Settings: 0.5, 1.0, 1.5, 2.0 Amps
Compliance Voltage w/7.5V adapter: 3.5 Volts
Compliance Voltage w/12V adapter: 8 volts
Current Resolution: 0.1%
Current Adjustment: Analog Trim Pot
Current Range Accuracy Always greater than limit, no more than 15%
Laser Diode Protection: Soft Start, Reverse Voltage, Current Limit, Thermal Shutdown
AC Adapter Input Voltage: 100 – 240 VAC
Control Signal Digital Isolation Voltage: 4500 Vrms
Minimum Control Signal ”Turn On” Voltage: 2.8 Volts
Control Signal Maximum Voltage: 36 Volts
Control Signal Maximum Current: 50 ma
Control Signal Maximum Frequency: 5KHz
Connectors: Screw Terminal and Molex Mini-Fit Jr™ Connectors
Operating Temperature: 0 to 40 °C
Storage Temperature: -40 to 70 °C
Dimensions: 2.85″ x 2.1″

http://jtechphotonics.com/?page_id=333


Here are some previous post on DIY 3d printers turned into desktop laser cutters / engravers, some are more advanced then others:

http://diy3dprinting.blogspot.com/2013/09/more-diy-reprap-laser-cutters-and.html

http://diy3dprinting.blogspot.com/2013/07/laser-cutting-with-prusa-mendel-i2.html


STAY SAFE! USE PROTECTIVE EYEWARE!


Lasersaur open source laser cutter project

Lasersaur is an open source laser cutter project that is well documented and has community behind it. If you want to make your own CO2 laser cutting system for cutting trough wood, paper or leather (and some other materials) this is a project you want to study.
There are some problems, bugs and issues so you should look at the extensive video in the bottom of the post.


















My lasersaur inspired 80w laser cutter. from Isaiah Bellais on Vimeo.



Lasersaur cuts Lasersaur from jody culkin on Vimeo.



Lasersaur (open source laser cutter) assembly timelapse. Feb 2013 from colaborativa on Vimeo.


When you need to cut stuff with a laser and you just have to do-it-yourself ...

http://www.lasersaur.com/

http://labs.nortd.com/lasersaur/































Here is the detailed presentation about practical experiences of building and working with Lasersaur including problems of the system:


More DIY RepRap laser cutters and engravers

Why is there no standardized, well documented and easy DIY laser cutter / engraver project? We need one! Those machines could add great toolset for desktop manufacturing community ... just sayin' ... I would do it if I knew how...

Prusa crew recently released a video of their printer with laser cutter:

http://diy3dprinting.blogspot.com/2013/07/laser-cutting-with-prusa-mendel-i2.html

I searched around and found some more RepRap laser DIY projects:

This one with 2W laser diode from projector:



Video by:
http://www.youtube.com/user/burnsnu?feature=watch


RepRap electronics controlling a DIY laser cutter:




Detailed buildlog:

http://www.buildlog.net/buildlog/view_log.php?id=261

Video by:
http://www.youtube.com/user/engserve?feature=watch



























RepRap Mendel with 1w laser for circuit etching:




Source:
http://blog.reonarudo.info/

Video by:
http://www.youtube.com/user/MorwenReonarudo?feature=watch


RepRap Mendel with 1000mW laser head



Video by: http://www.youtube.com/user/TheKibuz?feature=watch


here is a link to RepRap wiki about laser cutters: http://reprap.org/wiki/Laser_Cutter_Notes


REMEMBER:

WEAR EYE PROTECTION WHEN WORKING WITH LASERS!

Update:

here is a post with information on how to upgrade your 3d printer into laser cutter / engraver:

http://diy3dprinting.blogspot.com/2013/11/how-to-upgrade-your-3d-printer-into.html


Update 2:

here is home developed hybrid dual extruder 3d printer and laser cutter - the Habu:

http://diy3dprinting.blogspot.com/2013/12/habu-dual-extruder-3d-printer-and-laser.html

Update 3:

here is DIY laser upgrade of Rostock Max used for leather etching:

http://diy3dprinting.blogspot.com/2014/01/rostock-max-with-diy-laser-upgrade-used.html

Update3:

If you want to make very simple laser engraver from two DVD RW drives:

http://diy3dprinting.blogspot.com/2014/03/engravr-simple-raspi-powered-laser.html

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