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-   -   microfin wb made from akasa ak360/370 (http://forums.procooling.com/vbb/showthread.php?t=6032)

leejsmith 03-14-2003 04:55 AM

i saw the pic on the thermaltake website.
mine should be with me monday.

i will do a design on my 3d program when i get chance.

finding the copper is a bit of a problem at the moment but i will keep looking. do you know where i can get some ?

i was thinking of using a 10mm piece of acrylic with a round hole on one side cut through to a thinnner longer shape on the other side.

again i will do some designs later.

thanks for the info

lee

leejsmith 03-14-2003 06:49 AM

here is some thing i quickley put together today.

take the thermaltake copper skived base and remove the fins until they cover the top of the p4.

lower the fins down to 5mm

make a base plate to the height of the fins.

make a middle plate with a jet design to spray the incomming water over the full width of the fins.

made this clear for the example so you can see the shape.

this would be round on one side and oval on the other.

put a top on it.

http://homepage.ntlworld.com/lee_smith/jet1.jpg

bigben2k 03-14-2003 08:38 AM

What a shame: I can't see the pic. Otherwise, it looks good!

leejsmith 03-14-2003 08:40 AM

i couldnt get to my usualy image hosting site from work. i will move it when i get home.

MadDogMe 03-14-2003 12:07 PM

It's what I'd do in your shoes :) . My 'ideal' version would be a radial pin block made from a cross cut TT 1U P4 HSF, it would be very low profile...

I would try to work out the area of waterspace between the fins (seen 'end on') to make it slightly less than diametre of the tube feeding the block, so I can work out how high to make the fins without making a pressure drop in the block...

BB2K can probably help you out on the 'jet'/orrofice dimensions, what the ideal depth would be (thickness of 'jet' plate). There's an 'ideal' max lenght I believe?, where going past it is'nt benificial?...

PS, you could make everything but the T/T base plate out of Lexan if you wanted...

bigben2k 03-14-2003 12:22 PM

I can see!

You might consider adding:
1-flow seperators, to direct the water into the channels, instead of letting hit the top of the fins (completely optional, your fins are already pretty thin).

2-Make the nozzle in such a way that the outlet extends straight up a bit: it'll help keep the flow straight.


This is headed in the right direction.

leejsmith 03-14-2003 12:30 PM

Quote:

Originally posted by MadDogMe
It's what I'd do in your shoes :) . My 'ideal' version would be a radial pin block made from a cross cut TT 1U P4 HSF, it would be very low profile...

I would try to work out the area of waterspace between the fins (seen 'end on') to make it slightly less than diametre of the tube feeding the block, so I can work out how high to make the fins without making a pressure drop in the block...

BB2K can probably help you out on the 'jet'/orrofice dimensions, what the ideal depth would be (thickness of 'jet' plate). There's an 'ideal' max lenght I believe?, where going past it is'nt benificial?...

PS, you could make everything but the T/T base plate out of Lexan if you wanted...

can you explain what you meen by radial pin block ?

leejsmith 03-14-2003 01:35 PM

so what about this

http://homepage.ntlworld.com/lee_smith/jet.jpg

i clamped this into the base of my wb you can see the water would spray across the width of all the fins

http://homepage.ntlworld.com/lee_smith/afterjet.jpg

and without it

http://homepage.ntlworld.com/lee_smith/nojet.jpg

bigben2k 03-14-2003 02:09 PM

You're in business! Nice going!

leejsmith 03-14-2003 02:23 PM

Quote:

Originally posted by bigben2k
I can see!

You might consider adding:
1-flow seperators, to direct the water into the channels, instead of letting hit the top of the fins (completely optional, your fins are already pretty thin).

2-Make the nozzle in such a way that the outlet extends straight up a bit: it'll help keep the flow straight.


This is headed in the right direction.

can you explain the flow seperators ?

i just looked at volenti's thread and he made one almost the same as this ! i didnt know that

bigben2k 03-14-2003 02:50 PM

Right.

In Cathar's design, the fins are 1mm thick, but they are cut square at the top, in such a way that it forces the water to spread out, as in comes in through the inlet. In my block, it's a thermal nightmare.

In your block, like I said, your fins are already pretty thin, so this is probably a non-issue. If you really want to do something about it, you could sand those fins to a sharp edge.

Nice going. Can't wait to see results!

MadDogMe 03-14-2003 02:53 PM

I want to cut thin lines across the fins so there are loads of little 'pins' sticking up, then I want to have it so water enters from the centre and flows outwards in all directions (see BB2K's 'RADIUS' thread)...

****************************************

That top is the right idea, it just wants to be more 'gradual/linear' (can't think of the right word!), so the circle opening flows into the 'slot shape'. Imagine getting a copper tube and squashing the bottom into a slot then stretching it to the right width so there's a smooth transition all along the change of shape :) ...

Just open it out/smooth it with a needle file and you'll be good to go!...

leejsmith 03-14-2003 03:00 PM

thanks for that.

If only i could get some 20mm acrylic or lexan so i dont have to bond layers together, there is a shoe shop in the city that has some that would be perfect but i guess they wont like me taking thinks from there displays :p

just have to wait for the new base so i can make a start.

thanks for your help bigben and maddog. lets hope i can make a good job of it.

that was a quick test to see if it would work maddog.

Lee

leejsmith 03-15-2003 01:55 PM

so i had some free time today and couldnt wait for the new base to be deliverd so i put together a new version of the old block.It's a bit rough and i made some mistakes in a couple of places but i know now what problems i have before i make it for the new base.

(lots of pics btw sorry if it's slow)

http://homepage.ntlworld.com/lee_smith/Pict6.jpg

close up of each layer

http://homepage.ntlworld.com/lee_smith/Pict4.jpg
the is the base i made the left right sides angled so the water does not just hit the side of the walls and it should help direct the water out of the block.

http://homepage.ntlworld.com/lee_smith/Pict7.jpg

middle layer has the jet in the center to spray the width of the fin area. I used a counter sink in one side and a dremel with a cutting bit on the other.

http://homepage.ntlworld.com/lee_smith/Pict5.jpg

and the top. I cut the middle barb down a little as they are a fraction over 10mm to allow for the jet design.


http://homepage.ntlworld.com/lee_smith/Pict3.jpg

here you can see the bottom 2 layers and the position of the jet over the gap of the fins.

i dont have any of the acrylic glue so i cant stick it together yet


http://homepage.ntlworld.com/lee_smith/Pict8.jpg

http://homepage.ntlworld.com/lee_smith/Pict9.jpg

it leaks like a trooper but the jet looks great.

Lee

leejsmith 04-02-2003 07:11 AM

had some bad news today.
The thermaltake p4 skived cooler i wanted to make the new base still has not arrived and the theoverclockingstore tell me they expect delays of at least 2-3 weeks.
So i changed the order the the akasa ak360 again.

msv 04-02-2003 09:00 AM

Pouring some gasoline to the fire:
In this WaterWetter performance increasing discussion (I use WaterWwtter, but on the other hand my water cooling experience is less than two weeks), has anyone meassured any temps with and without water additives?
What do the field tests show?
Theoreticals are good at pointing out directions, but what do real life experiences say in this topic?
regards
Mikael S.

pHaestus 04-02-2003 09:21 AM

I think Bill's work makes it pretty clear that JUST the TIM joint C/W is near to 0.1C/W, so temps 3-4C above water don't make much sense. Regarding Asus probe measurements, you can find my comments on how seldom they equate with reality all over the web.

It's a very nice looking block tho. The gap in the center (for socket clip) is sadly in the worst possible spot from a design perspective. Maybe the nozzle will somewhat help tho; get high velocity water right onto baseplate at that point.

leejsmith 04-02-2003 09:24 AM

Quote:

Originally posted by msv
Pouring some gasoline to the fire:
In this WaterWetter performance increasing discussion (I use WaterWwtter, but on the other hand my water cooling experience is less than two weeks), has anyone meassured any temps with and without water additives?
What do the field tests show?
Theoreticals are good at pointing out directions, but what do real life experiences say in this topic?
regards
Mikael S.

hi msv,

why not start a new thread asking the above question. This thread is to help we with the design of the water block and would like to stop it from loosing it's direction.

thanks

Lee :)

pHaestus 04-02-2003 09:27 AM

OH almost forgot. Here is a fairly good discussion on water wetter:

http://www.bunkermentality.net/wetter.html

More controlled than most "tests" I have seen on topic on intareweb.

leejsmith 04-02-2003 09:29 AM

Quote:

Originally posted by pHaestus
I think Bill's work makes it pretty clear that JUST the TIM joint C/W is near to 0.1C/W, so temps 3-4C above water don't make much sense. Regarding Asus probe measurements, you can find my comments on how seldom they equate with reality all over the web.

It's a very nice looking block tho. The gap in the center (for socket clip) is sadly in the worst possible spot from a design perspective. Maybe the nozzle will somewhat help tho; get high velocity water right onto baseplate at that point.

thats why i wanted the thermaltake version of the base as it doesnt have the gap. It's not for the socket clip it's just a gap you would think akasa would know to put fins directly over the cpu die !

I might try cutting small fins into the gap.

leejsmith 04-02-2003 09:41 AM

what is the best way to measure the cpu temps.
i have 2 asus mobo's and i dont trust the bios temps from either of them. with the same cpu theres a 12C differance in the bios temps.

I was thinking of using a temp probe on the backside or the side of the heat spreader.

Blackeagle 04-02-2003 08:26 PM

Here is a thought.

You can do your block without so many layers by using a 1/2" Lexan top. Lexan is extremely strong & in this thickness you could drill the center inlet hole approx. 3/10" then use just a dremel to cut a slit (a small sliting blade would of course be best.) up from the bottom side connecting to the drilled hole. The drilled part could be threaded if you wish. Better would be to just epoxy in a short Cu Or SS tube, much thinner walled.

Then do the outlets by drilling them and threading or epoxying in tubes.

Would look a bit cleaner, and save one layer you then need to seal.

I do like this type of block. Not to hard to make and very effective.

Good luck.

BE

Blackeagle 04-02-2003 08:39 PM

DUH !

Always check for additional pages before posting.

Still think 1/2" lexan would be enough to do it in one layer. I have some & will help you out with a bit of it if you like. PM Mailing addy & your size needs and I can cut it to near your size needs while leaving you some to work with.

Price is high though, finished pics & performance report here.:D

BE

edit: I have no idea how long it will take to cross the lake. I would think it would be there in time for the Tt cooler if you were to reconsider using it. ;) :D

MadDogMe 04-03-2003 03:28 AM

That's a shame about the Thermaltake P4 HSF :( , t/o/c/store has them advertised still?. I'll see if there's anywhere else that has them in the UK...

leejsmith 04-03-2003 03:42 AM

Quote:

Originally posted by MadDogMe
That's a shame about the Thermaltake P4 HSF :( , t/o/c/store has them advertised still?. I'll see if there's anywhere else that has them in the UK...
i asked thermaltake for a supplier from the web site.

I do have another of the ak360 bases so i will do some work on that.

i was thinking about cuting fins into the base of the copper where the gap is.


BE. for the lexan top a peice 3.5 inch x 2.5inch will give me anough room and a bit left over. I just had some ram shipped over and it only cost $9 and was here in less than a week.

aprox how much would it cost ?


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