Usefull components from old redundant led lights ?

[foomar]

The fans are actually of better quality than they look , two ball bearings supporting a spring loaded shaft.
Oiled and reassembled it sounds fine but probably not for long , they may have been dry from new.

These are the precision designed lenses that claimed to focus the light deep into the canopy , aka plastic nipples clagged on with silicone sealent.

 

[Orange's Greenhouse]

I can't understand why anyone would ever use so many screws.

 

[Frosty Nuggets]

I can't understand why anyone would ever use so many screws.

Their way of saying they are massively screwing the customer six ways from Sunday.

 

[foomar]

Given the number that were crossthreaded or stripped from overtightening it suggests they were put in by a poorly set machine or by a careless hand.

Just openned up the shiny metal driver box cover on a recent QB and the internal components look the same as this , little advance over time which i find supriseing