2 more newbie questions.
 

1) In a waterblock how big do you think straight fins (1/4"-3/8" tall), and the space between fins should be? I was thinking 1/16" fins, w/ 1/8" space betweem each.

2) If I make a two piece (top and bottom) waterblock, and I don't want to solder them together. What procedure/precations should I take to make sure it won't leak after I screw 'em together?

Thanks for all the help. Hopefully I will have 1 block done in 3 weeks or less depending on how much free time I can get.

1) Cant say....it would help if you can either describe it better or show us a pic of what you have in mind and we'll go from there.

2a)Either mill an appropriately sized groove in the top and bottom piece for an O-ring to seal both sides together, watertight.

b)Use a gasket in between both peices to seal.

This is the one he linked in his other thread. http://www.angelfire.com/me/lastreso...ycomputer.html

1/16" fins and 1/16" channels would be where I start.

Here is a quick draw up of what I am thinking now. I am undecided on where and how big the pins in the center will be. And I also might 45 the corners (on the inside).

How tough will it be machining copper w/ a 1/16" carbon endmill?

WaterBock

Buy extra endmills. That's all I have to say. :D

I don't think that block will do any better than this.

http://www.customcooledpc.com/WWclone.jpg

Save yourself a lot of hastle and go with what works. :D

Cathar stated (calculated) that the fin to channel ratio should ideally be between 0.75 to 1.5.

That's quite a broad range of values isn't it?

I've been designing a block for the upcoming hammer with a similar design to the white water.

I was originally planning on 1mm fins and channel, though do you think it would be easier to manufacture if I moved it up to 1/16".

I would post pics, but I'd like to keep it under wraps for a while.

8-ball

1/16 = 1.587 mm

Yes, anything bigger will be easier. As Fixittt (and I) are about to find out, 1mm endmills are not only hard to find, but can break easily. We'll be trying to mill a 5mm deep channel.

Where is Fixittt? I havent seen him around lately,Ben.

Oh, he's here, just staying quiet! Stuff to sort.


BOT: the channels may have to be milled in more than one pass.

If you want to NOT break to many bits anyway. :D

Small endmills: http://www.rlschmitt.com/double%20End%20Mills.htm