Smallest feasible heat sink for 400mw 638 red diode?

[HankLloydRight]

I'm currently using a z-bolt 12mm mount/heat sink for my projector rebuild project, but I want (err, need) to add a double bounce mirror for the red diode, and in order to fit it on the beam table, I'm looking for suggestions for the smallest realistic/feasible heat sink+mount I can use for a 400mw 638 diode in a 12mm barrel case.

Thanks.

[DTR]

These would work well.
http://shop.z-bolt.com/Heat-Sink-for...ules_p_13.html

[HankLloydRight]

These would work well.
http://shop.z-bolt.com/Heat-Sink-for...ules_p_13.html

That's exactly what I already have! But it's too big! I was looking for something smaller, but enough to do the job.

thanks.

[KANG]

Some people use these in their builds also. http://www.amazon.com/uxcell-Linear-.../dp/B00G9HSJ4C
However, there is little flexibility in alignment.

[HankLloydRight]

Some people use these in their builds also. http://www.amazon.com/uxcell-Linear-.../dp/B00G9HSJ4C
However, there is little flexibility in alignment.

Thanks.

Will that supply adequate cooling?

[masterpj]

No it will still need a baseplate you'd bolt it on so the clamp can lose it's heat.

[HankLloydRight]

No it will still need a baseplate you'd bolt it on so the clamp can lose it's heat.

Yes, I assumed that part! Thanks.

[masterpj]

The only way you can make it smaller is by driving the diode less hard.. run it a little bit under the specifications of the datasheet... then get a heatsink with a LOT of surface area (so the ones with very fine fins with the little waves/bumps on those fins) will make the difference as it's either that or mass.. or both. Use heatsink compound as well for a good contact with your heatsink.. use a thermistor or thermocouple and measure as close to the center of the heatsink as possible to see if the temperature remains stable..

[neskusen]

Have you tried a standard rectangular laser mounts?
http://stores.ebay.com/Techhood/Lase...m322#&panel1-3
They have more volume and surface area to absorb the heat than repurposed shaft holders. Copper absorbs heat faster but if the volume is less and no active cooling to cool the copper itself then you might not notice much difference.