Diy Arduino Laser Engraver

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I started this project because first time I wanted to build something like what I found on the Internet does not contain all information had to look for more projects to put them together to understand something and I wanted to be as simple and cheaper for a draft wekend.
SAFETY WARNING - Please Be Safe When Using lasers. The Laser Used in this machine of can cause permanent eyesight damage, and probably Even blindness. When working with powerful lasers (> 5 mW), always wear a pair of laser safety glasses designed to block your laser's wavelength.

Supplies:

Step 1: The Frame

The frame is constructed of rectangular 15x15 mm, height being 275 mm, width 375 mm and length of 345mm.
Must take into account all inbinarile be 90 degrees, for if these are not the y axis will not work properly and will lock and can not do the whole race. All pipes must be cut accurately.

Round 8 mm pipes to be installed in four holes at 125mm from below. On 8 mm round pipe will introduce two pieces of 8mm round pipe inside. On pieces of pipe 8mm x axis will weld nuts and under them two 5 mm. All details are displayed in pictures. After the pieces were welded cleaned of rust and paint but first we will protect the nuts and 8mm pipe is not painted.

Step 2: X and Y Axes

We'll use threaded rod to 5 mm and will give 4 holes at 114 mm from the bottom.
The rod will be 365 mm and we will fix the frame with nuts in the following order in the rear with auto lock nut, 15 mm pipe sauiba with two nuts locked together, coming just two tipsy with washer inside the frame. Now if you rotate the threaded rod to rotate but it will not get out of the frame. X we use 5mm threaded rod will give two holes in and we use the same technique as the Y fixing.

Step 3: Mounting the Motor

I used 28byj-48 5V motor first need to hack, disassemble the blue cap and cut the red wire, because we will not folosi.Pe circuit board, we see the connection between coils, circuit scratch as I did.
If you want to know why I did that search the Internet and find out the answer for sure. Th motors fixed to the chassis with a screw of 3 mm and nuts, the connection between the motor and the threaded rod, is made of a piece of rubber with a through-hole of 4 mm.

For cheap motors by from here

3 stepper motor 2.12 buy from here
or 30$ 5 big stepper motor from here

Step 4: Electronics .Stepper Motors, Drivers ,Laser Diode

Step 5: Software

The machine is controlled by an Arduino Uno running grbl, and I'm using Universal Gcode Sender to stream gcode commands. To actually turn vector images into gcode, I'm using Inkscape with the gcodetools plugin. I used the spindle direction pin to turn the laser on and off, since that was easy to do with gcodetools.

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    63 Discussions

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    LawrenceT4

    3 years ago

    You should always emphasize that when using a laser cutter, there are hazardous fumes that can be generated as well as harmful laser light. Most leather, for example, is "chrome tanned." When using a laser cutter or engraver, this leather will give off haxavalent chrome fumes, which are extremely hazardous carcinogens. Laser cutters should ONLY be used in well-ventilated areas. There are no masks that will remove hexavalent chrome fumes.

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    brightledLawrenceT4

    Reply 7 weeks ago

    yes I have an exhaust fan feeding into a 2.5inch hose which goes directly into and up the chimney.

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    brightledbrightled

    Reply 7 weeks ago

    the suction fan hose is zip tied directly onto the laser head and turns on with machine power.

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    instructablejimLawrenceT4

    Reply 3 years ago

    WOW!!!! I NEVER would have thought that! THANK YOU! I deal with Hexavalent here at work (power plant) when contractors are welding. We have to go through a 21 PAGE procedure ANYTIME Hexavalent chromium is a threat. Although Ive never worked with leather, I CERTAINLY APPRECIATE you giving us a heads up! God Bless.
    Jim

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    ...and when Lawrence says "extremely hazardous" folks. HE IS NOT JOKING! THAT STUFF IS BAD NEWS!!!

    That sort of stuff is SUPER DANGEROUS, so AMEN!~ You are spot on about venting gases with chrome tanned leather.

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    CurtR

    3 years ago

    What wattage is the laser that you used with the circuit shown?

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    brightledCurtR

    Reply 7 weeks ago

    Curently I have 2 machines one has a 2500mw@450nm and the other 500mw 638nm,and I am waiting for a good price on a 7000mw450nm laser as it will cut tricore corrugated paper or cardboard.Right now I cut paste board and paper

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    PaulF88

    3 years ago

    I'm not an inventor but want to know more about low output laser. I want to make a laser lawnmower or weed eater. What kind of laser will cut through grass and weed and not metal.?

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    tomcamPaulF88

    Reply 3 years ago

    Sadly, your laser lawnmower won't work without hundreds of thousands of dollars (at least) in equipment and millions of dollars in tooling--plus, it would eat vast amounts of energy. Cutting a lawn takes a lot more energy than you might think, and you'd need at least dozens of lasers much more powerful than the one in this Instructable for it to be done in a reasonable amount of time.

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    calincostelcotyPaulF88

    Reply 3 years ago

    I think green grass will work only with dry grass will ignite you can test a laser diode 1w

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    bmiller91calincostelcoty

    Reply 3 years ago

    If he's looking to build something as fast as a normal lawn mower forget it! Might be possible to build a Roomba style device to SLOWLY mow the entire yard but that's a vastly more complex project.

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    mrgw98PaulF88

    Reply 3 years ago

    Not much will cut through grass fast enough to be a lawn mower. If you want to make a one that cuts grass and not metal, that would be hard to find. If you could, very smart idea, the quietest lawn mower ever! Grass is wet and it makes it harder to cut through without cutting metal. Really even with a laser that does cut grass, over time, it would eventually cut through the metal or at least eat away at it slowly. It would be a bit dangerous. Sorry to bring you bad news. Then again, I am one person, others might be able to help you more.

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    Czarcharles

    3 years ago

    I have a laser engraver I got on line from China, but could never get the software. The assembled product looks much like yours. Any idea what I could do about software to drive it short of going to China?

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    crodaddie.

    3 years ago

    How deep would this laser be able to cut into hardened steel or SS for serial number applications?

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    brightledcrodaddie.

    Reply 7 weeks ago

    In order to cut or engrave SS or hardened steel you need to go to a CO2 laser @50moin to 100 watt power.Be prepared to spend $5000 up.