I have a really nice aluminum heatsink from a old PC processor I'd like to use in a enclosure with a 100mm fan. I know this likely is overkill but I've been bit by lost jobs with the grblshield and heat before building a nice cooling tower for it. I actually lost another job when said cooling tower lost a fan (thanks radio shack quality!)
Anyway what is the best way to mount the heat sink on the back of the board near the copper heat sinks? I have some kapton tape.
The heat sink I salvaged is just about exactly the same size as the board. by about 4 inches deep. It looks really neat.
I have a v7 which has, I believe, a bit more open area near the driver devices.
I fabricated an interface from 3/8"sq AL stock, with necessary reliefs to avoid non-ground paths and drilled 4 M5 or M8 holes thru the ground PWB area to fasten the board, thru the interface, to a rather large surplus AMD CPU sink.
I have found no need for fans so far, but seldom run jobs longer than 20 mins.
The heat sink gets a little warm, the driver devices with attached dipsinks get to perhaps 105-110F, not bad at all.
Of course none of this is really sanctioned abuse of the tinyG board, but works for me; YRMV.
I can send some pics end of next week, traveling at the moment.
nosredna
Here are two pics of what I did with my V7
[image: 2014-03-12T20t58t16_1.JPG, no longer available]
[image: 2014-03-12T22t17t30_1.JPG, no longer available]
The V8 board looks to be more busy in the area I used for connection.
And, as I said, this is non-sanctioned abuse of the tinyG PWB; but the results work very well for me.
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