DIY design build throwdown

SSGrower

SSGrower

Well-Known Member
Runnin like a rockstar abiq, 24 months no noticeable fall off, extra heating, discoloration. More importantly same terp production?
 
captainmorgan

captainmorgan

Well-Known Member
Thought I would pass this along,extruded heatsinks are not flat and there is a industry standard for what's allowable to be in spec. It's a lot of sanding,especially with wider profiles. I bought one of these for $60 with a coupon and it worked great flattening the HS's before sanding. I was able to get them flat enough that I only need a fine sandpaper to prep them for COB's.

http://www.harborfreight.com/6-ton-a-frame-bench-shop-press-1666.html
 
BOBBY_G

BOBBY_G

Well-Known Member
captainmorgan said:
Thought I would pass this along,extruded heatsinks are not flat and there is a industry standard for what's allowable to be in spec. It's a lot of sanding,especially with wider profiles. I bought one of these for $60 with a coupon and it worked great flattening the HS's before sanding. I was able to get them flat enough that I only need a fine sandpaper to prep them for COB's.

http://www.harborfreight.com/6-ton-a-frame-bench-shop-press-1666.html
Click to expand...
what did you use for a reference flat surface to press them? 4 thousandths in 4" is pretty flat to begin with, thats a little over 1/1000th over the inch and a half the cob sits on. i guess what im getting at is i would expect that pressing a non-flat surface with a perfectly flat surface would result in a still non-flat surface as it would tend to spring back, right? I have a 20 ton HF press, but im thinking about taking my finished drilled and tapped heat sinks to a shop to be milled flat in the cob contact zones
 
Last edited:
Abiqua

Abiqua

Well-Known Member
SSGrower said:
Runnin like a rockstar abiq, 24 months no noticeable fall off, extra heating, discoloration. More importantly same terp production?
Click to expand...
No noticeable fall off...I guess I could use the lux meter attached to the Arduino to get some kind of reading...but afaik : no fall off, great cooling with 5v fans, maybe some slight shifting to a redder hue?? they look pretty gloomy next to the 3500K..more red ---darn.

actually I want to get some Terp testing done on my working strains, but that shit is expensive even in a legal state..F'ers...but thru self titration and reported titration, I am doing a hellavu job apparently...sans extra UVB, which I am still not convinced isn't strain dependent....

The Arctics @ 360 grams ish....are providing about .65 C/W cooling....very underrated still!
 
BOBBY_G

BOBBY_G

Well-Known Member
SSGrower said:
So based on my totally noninclusive search on the interwebs the "HL" in the meanwell name is hazardous location. seems more common with the higher output drivers
Click to expand...
HL has nothing to do with output its for hazardous places like oil refineries, gas stations, etc, where flammable vapors can exist in ambient air.

usually $$$$
 
captainmorgan

captainmorgan

Well-Known Member
BOBBY_G said:
what did you use for a reference flat surface to press them? 4 thousandths in 4" is pretty flat to begin with, thats a little over 1/1000th over the inch and a half the cob sits on. i guess what im getting at is i would expect that pressing a non-flat surface with a perfectly flat surface would result in a still non-flat surface as it would tend to spring back, right? I have a 20 ton HF press, but im thinking about taking my finished drilled and tapped heat sinks to a shop to be milled flat in the cob contact zones
Click to expand...
That would be .004" per inch of width and if I remember right the first HS's I bought were 3.5" wide and were .012" concave. HSUSA checked their stock when I called and they said the average for the 3.5" profile was .008" concave,they told me it can vary,even within a extrusion run. I bought some 10" HS's recently and they were much more concave but I didn't bother to check how much.
 
You must log in or register to reply here.
Top