Ed Blackwood's Heatsinks Phase Linear 700B

[Gibsonian]

Sweet!

 

[laatsch55]

Doug's 700 had one more chore, to test fit Ed's heatsinks. I'm tickled.

 

[fitz43]

They sure look nice! Are they taller than the meter faceplate? Would they still fit in a wooden sleeve or are they too tall?

 

[laatsch55]

This set is taller than the faceplate, yes. They don't have to be......

 

[laatsch55]

The second pair is about an hour from being done........ Filed flat, then sanded with 220 W/D, 320 W/D, 400 W/D and now to 600.

 

[NavLinear]

Those are gorgeous Lee - almost as gorgeous as Devin!

 

[laatsch55]

Yep, imagine having to spend all those hours around that woman to do all that drawing. That, to me, would be an exercise in frustration, unless.............

 

[mlucitt]

Lee, if you end up with a short pair (shorter depth - sticking out the back) save them because I was thinking about silver soldering some 1/4" copper tubing up and down across the fins (would have a hose between each set for expansion movement, and routing the hose across to a computer box radiator and fan along with a small 12V pump I have laying around. For coolant I could use water or ethylene glycol.

 

[laatsch55]

Shorter as in stock length??

 

[Pure_Brew]

Just wanted to comment that I really dig the copper and that is some awesome work.

 

[laatsch55]

Thank you Joe!!

 

[mlucitt]

Shorter as in stock length??

Yes, with the copper tubing cooling, the fins will not need to have as much surface area. Maybe half as deep and just the stock height. I could even trim the corners to give a '59 Cadillac fin shape. Wait, I'm getting carried away...

 

[ksrigg]

Absolute perfection Lee. If you EVER make any more, you know who the Phase Linear OCD Freaks around here are. I know Mark wants a set... Hell, now I want a SOLID Copper PL. 700B or 400...I don't know if it would matter....Might as well be a 700 while I'm dreaming...How freaking beautiful.

 

[laatsch55]

Thank you Sutton. They are kinda cool......

 

[laatsch55]

Finally figured out how to finish the 2nd bend in a repeatable way. 1-1/2" solid bar stock welded to a push frame at a 45 Deg angle. The die will be a 3/8" thick 2" angle iron. The angle will sit in a couple Vee blocks with the spine down. I have to machine the radius out of the angle and I'll be good to go, just ran out of time yesterday to finish it. The ring on the other end fits snug around the ram on our 150 ton vertical press. Should keep it straight.

 

[laatsch55]

Going down to the shop to see if my tool works, stay tuned......,

 

[laatsch55]

Gentlemen, WE HAVE REPEATABILITY!!!!!!! And---we have achieved the same radius as the break. had to mill the radius out of the angle iron as the grinder left an unacceptable radius........

 

[laatsch55]

Then it was just a matter of lining things up squarely and mashing the copper into the angle. H ad to flatten the mating surface after the big squish but it behaved itself very well after that.....

 

[laatsch55]

The first set-up and the final product....

 

[NavLinear]

That is some pretty innovative thinking there - I'm impressed. I know that getting that second bend was a tough nut to crack. A work of art - you'll need some polish for those to keep them nice and shiney.

I must admit that I like the big ass tools you have to work with.