Table of contents General Laser Safety Warnings and Precautions ..................3 List of parts .............................. 4 Cable description ............................. 5 How to connect ............................5 G-code ..............................17 Generating G-code ..........................18 Working area ............................20 Precautions ............................21 Appendix 1: G-Code example ........................ 22...
General Laser Safety Warnings and Precautions Only person with specialized training and appropriate laser safety knowledge can use and maintain the laser head. The laser head operator must be aware of laser radiation hazard. While laser head is operating protection Laser Glasses designed for 190 – 540 nm (OD 7+) should be used.
List of parts Name of the part Picture PLH3D-2W Laser Head for Prusa 3DP Laser Safety Glasses Prusa Signal Cable for PLH3D-2W PLH3D-2W Mount for Prusa Printer (3D file to download) M3 x 50 screws (2 pieces) M3 x 6 screws (2...
• connect to wire of front print fan • connect to front print fan connector on EINSY board How to connect 1. Download 3D file of PLH3D-2W Mount for Prusa Printer from our website and print it on your 3D printer.
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2. Connect PWR- and PWR+ (parallel to wires that have been connected already) 3. Connect laser control input to the connector on EINSY board (instead of front print fan cable).
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4. Check with photo below, if you plugged those in correct slots.
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5. Connect front print fan cable. 6. View of wires connected.
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7. Unwrap the cable bundle which connects EINSY board with extruder and dismount X-carriage-back.
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8. Pull the black nylon filament guide, P.I.N.D.A. sensor cable and hotend fan cable through the X-carriage-back to make more space. Push PLH3D-2W laser head cable through the hole, to the extruder side.
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9. Push black nylon filament guide, P.I.N.D.A. sensor cable and hotend fan cable back. 10. Push the PLH3D-2W laser head cable in the channel together with the P.I.N.D.A. sensor and fan cables. Use zip tie to mount it firmly.
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11. Set up X-carriage-back back to its place.
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12. Twist textile sleeve with PLH3D-2W laser head’s cable added to the bundle and mount the bundle back.
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13. Unscrew top right and bottom left (view from the front side) of the extruder motor.
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14. Push two M3x50 screws through the upper holes of laser head’s holder. 15. Mount PLH3D-2W laser head to the holder (use two M3x6 screws).
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16. Using M3x50 screws, that were set up in the 13. point, mount PLH3D-2W laser head’s holder to the extruder’s motor.
17. Before starting work with laser, connect the cable. Always remember to cover heat bed or spring steel sheet with non-reflective material that will protect it from laser. Laser beam can damage heat bed or spring steel sheet very easily! G-code To cut or engrave, it is necessary to generate the appropriate G-code that using the following commands:...
Before every G0, G1 commands M106 Laser ON SXXX PWM duty where XXX is number between 0 and 255 (e.g.: 0 = 0% and 255 = 100%) Footer M107 Print cooling fan off (disable laser) G92 X0 Y0 Z0 Reset selected workspace To see an example of G-code, please refer to Appendix 1.
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4. Click Generate G-Code and save it. 5. Now, you can load the generated G-code to your 3D printer and begin to use the laser.
Working area Normal working area of Prusa i3 MK3S in XY plane is 250mm x 210mm. Tool center point of the 3D Printer is the nozzle tip but TCP of the laser head is its beam spot. Because the laser head is mounted in some distance from extruder, tool center point during work with laser is moved.
= 15 − The lens of PLH3D-2W are focused at 60mm when shipped. So in newly manufactured laser head, value of the offset in Z axis is: = 15 − 60 = −45 ...
Laser head should be disconnected soon after finishing the work. Never use reset button when laser is connected (unplug it first). Remember that working area is 86 mm shorter in Y axis when laser is used. Appendix 1: G-Code example ;(Header) M104 S0 ;Set hotend temperature to 0...