#Rotor help me please. . .
 

I want to make a block, and I only have access to a drill press.

I've seen your blocks, but I've never really experienced that design, how well does it work?

Do the holes line up on the top and bottom, or is it, like hole-to-peg when they are put together?

How deeep are you drilling?

my design is, (pimping myself here) very very efficient. Not only in the performance aspect, but also the manufacturing and cost-effectiveness areas.

you will notice that a lot of members are busy doing the same thing, you might want to go have a look at what's in this thread.

if you are good with your hands, then this one will be a walk in the park...

I've seen some pretty nice temps.

the depth of the channels, all depend of the thickness of the block, and the location of the channel, I'm using VDFC extensively in my designs, the two halves do line up with the pins over one another yes.

Ok, this is the second time in two days I've seen VDFC mentioned.

When I do a google search I learn that VDFC seems to have to do with trees in Australia. I'm guessing that's not what you're talking about.

:)

no no no... Google will not get you nothing... VDFC in relation to water-block design, is an ultra high top secret technology. not too many people know about it... :D

here it is explained.

Ahh! Now I know.

ehh, thk u rotor, first time i see that vdfc drawing.

one thing to comment on though; it takes a relatively precice bench drill to work it out like that.

Given the recent move towards thinner baseplates, would the performance of your blocks not improve if the depth of the drill cuts went from deeper to shallower as you moved away from the center of the block? Or is this how you REALLY do it, and the graphic above is just meant to illustrate the concept without giving away too much?:D

I find myself drawn to this genre of blocks. The simplicity is appealing...:cool:


Bob

indeed yes.... the drawing is based on my initial development of the pin-grid area, that of cooling down high performance TEC's....

in the drawing the VDFC config is for uniform temp across a large square region....

with regards to cooling a Core sized region, it is still advantageous to have more copper directly over the core, that drawing will indeed do the job well, but there are other configurations, that work better...

if one looks at the vdfc, one can logically assume that the heat from the core will get spread out; the hotspot where water meets Cu will be larger, temp will be less.

what the vdfc will promote is the increase in water velocity over the chip area ; that will be a good thing.

the design could however be made to increase velocity, and have a small baseplate thickness over chip. chk out what puzzdre is doing in another thread. u could also make fewer connecting channels, and get narrower dremel wheels.

so there is a large difference between tec design and non-tec desing.

Yep!, smaller diametre drill holes but deeper over the core, larger ones near the outlets...

... along with a variable depth - shallower near the outlets (assuming 1 inlet over the core, and 2 outlets). Velocity can be regulated via an insert (a la cathar's LRWW). This would also correspond with nicozeg's "Hershey Kiss" block (I think it looks like one!:D )here. where the velocity is increased towards the outlets.

Bob

that is totally against the principles of rotor and billA. there is no need to have increased flow resistance near outlets.

i thk i'm quoting billA here, who said that in a diameter of 1 inch around inlet there should be high resistance + turbulence. every where else in system and block, the lowest resistance possible should be sought after. so actually rotor's vdfc is a good shot. what puzzdre is fabricating the last days seems mighty promising also.

What I did in my block wasn’t increasing velocity, but keeping it steady over a diameter of 32 mm. Anyway, it’s under remodelation right now because the outlet system was too restrictive.

What’s a Hershey Kiss?

http://3rotor.homelinux.com/images/T...P04730_sml.JPG

that is a hershey kiss... :)

Oh, I see, some kind of chocolate?

It sure is similar in weight: Just 80 grams the block. A lightweight record, don’t think? :D

OK, how about this idea: have the top act as a mirror-image of the base. This would allow for a thin bp thickness and high velocity in the area of the die, adequate bp material immediately outside of die area, and no outlet restriction. I will try to follow up with a section to illustrate shortly.


Bob

that is a good idea for practical purposes. but you should consider that the water flowing through the top mirrored half is almost not taking heat away from the copper; transporting ok, but not taking away. so; lets say u have a 0.8" diameter circle around inlet with small thickness baseplate, no drillings in top half. the water would be forced to take away only heat from lower half. outside that radius u could do anything in your power to increase flow.

Well, considering that there is probably little heat to take from the top half, the point is moot.

Here is the section promised. I hope it conveys my meaning accurately.

Bob

don't know what to say...

first, great work on the sideview, i understand completely.

second, it sins totally against rotor and billA's views. personally i do'nt have too much xperience with making blox; but, the first and only block i have ever made is based on xactly the design you just drew. sad to admit that the performance of such a block is rather disapointing (+/- same as maze2). there should be alot more to gain out of the dual outlet design.

try look at it this way; u r not trying to equalize flow velocity troughout the whole block. high flow velocity at inlet/chip area; low flow velocity(=low flow resistance) at the outlets.

so as your gut feeling would tell u to use 3/8 for outlets and 1/2 for inlet; better doing it the other way around...

i'm gonna try get you a sideview asap (killed my acad install ):rolleyes:

http://hlh1.netfirms.com/LRWB.jpg

:D :drool:

What's with the pics, Hua Luo Han? They're kinda off topic, aren't they?

yes.... and where the heck do you get those Y splitters..... :)

and what are those blocks like, inside.... never mind, they are WW's right? :D


wow 119 of those blocks out there allready..... Not bad.... :D

Must be Cather's P4 adapter..nice, never seen one of those before.

And #Rotor, I'm afraid I can't really contribute anything to this topic, but I'd just like to say you're one hell of a nice guy to be so generously helping people make blocks that you sell :) I know Cather does it too, and I mean no ill towards the Man, but I just think you're real nice about it. Thought that was worth saying :cool:

Cherro

#Rotor, are your blocks pretty restrictive of waterflow, and I have a question about your HDD block, can that fit in a normal drive 3.5" bay along with a HDD?

what size are those fitting?