I just got a 30w output laser module and am trying to find a mount for lr4. I’m a little afraid to use the kinematic mount as its quite heavy.
Here’s the laser:
I think im looking for a mount like this but for lr4 kobalt:
Can you roll your own? Just poking around in that Makita mount for the LR3 it looks like he used a 16mm x 40mm bolt pattern. The plastic mounting surface he added is just a rectangle, 10mm x 36mm x 63mm. The laser’s user manual suggests M3 mounting screws.
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You can remove everything in that link including ref etc., so we are not getting tracked. 
https://www.amazon.com/LASER-TREE-Engraver-Overheat-Engraving/dp/B0C36TXLHF/
I have tried several different methods for attaching my 40w LaserTree module. All have thier benefits and all have drawbacks.
I’ve settled on this setup https://www.thingiverse.com/thing:4643645 which requires replacing the Makita router I use with the laser, which only takes 5 mins, but it allows you to use the same origin as the router bit.
Having the laser mounted at the same time as the router gives problems with dust buildup on the laser lens (which reduces the efficiency and can cause fire), you also have the issue aligning your job with the offset position of the laser. I already have to reconfigure my system as the Jackpot board connects via wifi for router job setup, but the laser runs via usb connection for my Lightburn control. So an extra 5 mins is not a problem.
The only other mod I had to make was splicing my Makita power lead to put in a Euro plug connector, so that I could attach/detach the router easily.
The mount I made uses the router mounting holes. Adding and removing it onto the dovetail rails using the thumb screws is easy and repeatable - probably not as accurate as the kinematic mount.
You can configure the origin offset in lightburn so if you use the same dxf and zero point you can laser and cut on the same workpiece and they’ll be aligned.
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This is exactly what I’m looking for! Any chance you’ve willing to post the file?
Since there is no load/force on the Laser why not design a place for magnets. a magnetic “Quick” laser mount sounds perfect. Just disconnect the wire and pull the entire mount. quick hot swap on/off with router in place.
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The kinematic mount does exactly this but he noted that he’s worried about the weight. There is some very mild force applied to the top of my laser due to the control wires and the air assist tubing as well. With the lever effect it’s not much, but it’s also probably not trivial. During a raster though, the laser is moving back and forth really quickly, so the weight and these other small forces might all add up to some instability.
That said, my laser (Ortur) requires 2 hands to remove it from the kinematic mount, and I’ve never had it so much as wobble. Guess it depends on the strength of the magnets, the weight of the laser and an understanding of the Maxwell kinematic mount type. (I had used it previously on a toolchanger.)