PSU/Wire specs for diode laser engraver?

Thinking about putting a 10W diode laser head on the SV08 Max toolhead for some light duty acrylic cutting. Are there published specs of the PSU and wiring from the PSU to the toolhead so I dont have to rip my machine apart to find out? :smiley:

The lasers I’m looking at need 24v at 3.5A, 5A preferrable. Some can go as low as 2A.

Thanks!

Note: And yes, if I do it I’ll publish BOM/models/guide.

This should be simple enough. Everything happens in the toolhead. Unplug the heater, PT1000 and the heatsink fan and remove the heatsink/hotend assembly. Create/print an adaptor mount for your laser.

If you want more than 3.5A (85W) you’ll need to use a SSR connected the the “heater” (now laser) pins and provide an external power supply.

A more elegant solution would be to buy a new toolhead board from sovol and remove the entire extruder assembly. You could swap the umbilical over or build a dedicated laser umbilical. This requires an external PS and access to the CAN plug on the mainboard (or use a U2C dongle in external USB port)

The MOST elegant would to use a tool changer type mount and a dedicated board.

You’ll need to create a printer.cfg to support the new [mcu laser]. I’d move everything for the toolhead and buffer to filament.cfg and make a new laser.cfg for the new toolhead. That way you can simply comment/uncomment 2 [include] lines to switch modes.

I’ve assumed you are going to run the Z axis (including tilt) manually. You could add a probe of some type to the laser head if you wanted.

For Z I’ll manually tune then use gcode to set height based on material height.

I plan to make a magnetic mount that can be attached to the existing toolhead (will design a mount) so it can pull double duty. My original thought was quick-connects for fan control to handle laser power via PWM, but need to make sure there is a line that can safely handle the load.

I was originally going to do this with my old Maker Select V2 (based on https://youtu.be/bl92OQrr0V8) but realized this would be nicer on the Max.