Tool Holder for MPCNC 2.8W laser w/ fan and line lasers

by Ductsoup, published

Tool Holder for MPCNC 2.8W laser w/ fan and line lasers by Ductsoup Sep 20, 2015
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No cover so there's potentially some additional ambient cooling benefit (it also looks cool with the danger sticker visible). At very least without the cover it's less to print.

Added a duct to better direct the air flow over and around the heat sink. The line lasers are aligned perpendicular to the work surface to avoid spraying even low power laser radiation around unnecessarily.


Rotate 180 degrees and it'll print just fine without supports. In PLA at 0.2mm layer, 100% infill it took about 4 hours. That's probably massive overkill, 20% to 50% infill should be fine.

Add'l Materials

(2) M3x20 to mount the laser
(4) #6-32x3/4 to mount the cooling fan
(2) #6-32x3/4 to mount the tool block
(2) line lasers from Adafruit

The line lasers are a press fit and require no hardware. If it's too tight, use a straight screw driver and gently pry the split apart a little for assembly and fine alignment.


Fit the 2.8W laser last.

Design Notes

There's no provision for squaring the main laser to the work surface, I'm relying entirely on the accuracy of the printer in this design. If it becomes necessary later the circular mounting holes could easily be made oblong to allow for adjustment.

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How do you power the 2 line lasers? Does it hook up directly to the laser driver (Jtechphotonics)? If not, how do you power them? If so, where do you attach them?


Does this mount in the existing drilled holes on the Z axis, or do I need to remove the gantry and redrill new holes? (MPCNC 525 using US electrical conduit)

It mounts on the existing holes for my build. I'm not sure of anything has changed with the newer versions, guessing not.

I agree. Nice, well thought out design, it looks cool, and lasers! What more can you want?

What laser module, lens and driver are you using? Is it JTech Photonics module or ala carte parts from ebay? How are you driving the TTL modulation? In your gcode?

Steve C

Thanks. I picked up this kit.


Just finishing up the electronics mount, final assembly and wiring is next. From the docs I've seen yes, they're using PWM to modulate the laser power.

Very nice,
A very well thought out design.

I want one! The design looks great and I want a laser.