Tevo Black Widow User manual

TEVO Black Widow
Laser manual V0.1

Safety instruction!
You have to wear laser goggles at all the times before connecting power
to laser and operating it as any reflections from laser can blind you
immediately.
When you are finished to operate laser disconnect power from it
immediately so that you don’t activate it accidentally while 3D printing
or operating the printer.
Do not put your fingers or other body parts under the laser as it can
cause burns.
We will not take any responsibility of possible injury or damage to your
personal property caused by laser.
Installation
Remove the hotend/extruder and install laser to extruder/hotend plate.

For wiring of the laser connect the PWM control wire to the servo port of
MKS GEN board as pointed by arrows in following picture.
Be careful to connect wire right way so that colours are facing same way as
in picture (black and red).
Connect the 24V to 12V adapter to PSU
Connect the 12V power connector (from 24V to 12V converter) to the
module DC jack

When everything is installed the next step is to adjust the laser spot size. To
do this you have to first drive Z manually so that lens is around 50mm (2
inch) up from bed. Then you can but the safety goggles on and turn on the
power of the printer (it is recommended that you put some small piece of
metal under laser in case that the laser turns on directly so that you don’t
burn hole in heatbed surface.)
Next send command from Repetier host (M42 P6 S1) to turn on laser with
lowest power. You should now get quite dim spot of laser to surface of
metal. Then you can replace metal or the piece you have under laser and
replace it with regular paper. Now you can do the fine tuning and adjust the
laser spot by turning the “focus screw”. You have to get laser spot to as
small as possible.

Software
To make gcode files for engraving you have to first install Inkscape (https://
inkscape.org/en/) and after installing it you have to install repetier laser
plugin for it. You can find great instruction on installing and using the
plugin from repetier website (https://www.repetier.com/repetier-g-code-
plugin-for-inskscape/). For engraving speeds we recommend 100-1500mm/
min depending on material you use and we really encourage you to test to
find best combination which speeds will work best for the material you will
use.