Steve wanted a 3 board version but the popular vote was 1 board version. Any one regretting what they voted for. feel free to change your voet.
https://www.rollitup.org/t/pre-drilled-heatsink-for-boards.925811/
Here are the sample photos. Final heatsink will be anodized.
Design Notes:
Pattern compatible HLG-120H and HLG-240H. Moving a hole on other side so the HLG-80H will work too
Better to install board in the end to avoid damage
1/2 side L Channels 1/16 or 1/20 can be used to connect multiple heastinks.
L Channels with leg facing down can protect diodes in case you keep lamp diode side down on table
Going to make a veg lamp with HLG-120H-C1400A
Bolt down driver with 2xM4 nut/bolt
Wago on a power cable.
Screw down board with 8 screws
Wire the driver DC to boards and wago
Install hanger clip
Done