My thoughts exactly. Could never understand the usefulness of a high powered laser & justfy the time to make something like this. That has changed a bit now so I'll do more.
I built this one with the intention of having decent life. I see that people recommend 90-100ma for PHRs to have decent life? So paired with good heatsinking I hope 110ma might still be a good compromise?
The Aixiz module is epoxied to the heatsink with thermal epoxy. I also potted the back of the diode & the driver with thermal epoxy. The brass contact can is also epoxied to the heatsink with thermal epoxy. Heat would also be disappated from the front of the heatsink contacting the head & from the brass can making ground contact to the body.
I know the price is scary but aside from being absolutelty drop dead gorgeous, the chuck is of very high quality & well worth the money. With the Set-Tru, TIR is guaranteed to be 0.0004", I'm getting about 0.0002". Once you use one you'll want nothing else. I love it so much I got one for the new lathe, bigger & brand new this time at just about $1K.
5" & 6.25"