. .
Page 1 of 3 123 LastLast
  1. #1
    I bought this water cooled spindle some time ago and am about to buy a water cooling system to go with it. When I asked about the radiator and pump heat rejection requirements etc. the seller helpfully suggested 'any kind of pump' to go with this system (didn't sell anything suitable himself).
    http://cgi.ebay.co.uk/1-5KW-WATER-CO...efaultDomain_0

    So with that less than helpful spec I'm looking for options to cool this, anyone own one or something similar? My research has shown people using PC CPU coolers, and this Thermaltake 850i seems to be working for someone:
    http://www.cnczone.com/forums/showth...t=76453&page=3
    http://www.thermaltakeusa.com/produc...5/cl-w0175.asp

    I've heard these spindles have a high flow resistance, and blowing into the inlet port last night confirmed this subjectively. My suspicion is that I need something which can create alot of pressure, but probably not need much in the way of flow.

    I'm tempted to go for the Thermaltake option at about £90, but anyone used anything else? Looking to buy one ASAP to get the spindle running at last!

    Thanks
    Last edited by routercnc; 30-08-2010 at 08:44 PM.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  2. #2
    Fishtank pump?

  3. #3
    Or even better....

    A cheapish? brushless power jet washer? although this is pressurised...might not coolit down quick enough?

    /I'll get me coat:whistling:

  4. #4
    ecat's Avatar
    Location unknown. Last Activity: 08-02-2014 Has been a member for 9-10 years. Has a total post count of 157. Received thanks 5 times, giving thanks to others 8 times.
    There is a load of stuff to choose from in the PC world and certainly for cooling a CPU the best thing to be said about the Thermaltake is, it's green.

    This may be of use..
    http://www.xtremesystems.org/forums/...d.php?t=151627

    ... I'd guess something like this
    http://www.overclockers.co.uk/showpr...d=1522&subcat=

    ... and this ...
    http://www.watercoolinguk.co.uk/p/Th...-15mm_767.html

    would out perform the Thermaltake, as would almost any of the radiators on that site + that pump.

    Add a 'T' junction and a blocked off length of tube for filling and off you go. Or you may want to add something like http://www.specialtech.co.uk/spshop/...at=1630&page=1 and a little bit of silver for luck ;) http://www.xtremesystems.org/forums/...0&postcount=18.

    ... should get you stated anyway :)

    I wouldn't worry too much about flow rate, so long as there is some flow you just need to spec the radiator + fans to match your heat load at a comfortable temperature - say 30 to 35degC ?
    Last edited by ecat; 30-08-2010 at 10:50 AM.

  5. #5
    I used to use a windscreen washer motor and a large container ( sat on the cold floor of my garage (floor kept the water cold enough). This was to bench test and run in my model boat engines, on the same note you could use a small pond pump as you get decent pressure for long runs
    If the nagging gets really bad......Get a bigger shed:naughty:

  6. #6
    I've found out that these spindles are roughly 80% efficient, so clearly you need to dissipate 300W.
    Lets say you have a 10L container of water at 20°C and you run it for an hour...that will rise to 46°C if the container was perfectly insulated.
    I'm not at all certain about this calculation, but I'm pretty sure that that volume of water in an aluminium box would dissipate the heat fast enough.

    I've got one of these pumps and it seems good:
    http://cgi.ebay.co.uk/WHALE-GP1002-1...an_Accessories
    Don't see why you couldn't use that with the setup I described.

  7. #7
    A bit elaborate but look here for an idea to put in line

    http://www.turnbull-scott.co.uk/comm...ing_radiators/
    If the nagging gets really bad......Get a bigger shed:naughty:

  8. #8
    Thanks Guys, some useful stuff there.

    I had considered fish tank pumps, but not sure if they would be up to it. If anyone has seen one used for this application, or seen anything suggested above actually used on a spindle, I'd be interested. Same goes for fountain pumps, high flow rate but would probably get hot with the restriction in the spindle - they are not very free flowing. Some people have tried windscreen washer pumps, but they did run very hot connected to spindles. I did consider running several together, but it feels like a bodge. Probably not as quiet as a PC cooler pump either.

    Hi ecat, great stuff. Love the spreadsheet, would be great if there was a spindle option for the CPU block! I'd seen the silver strip idea to stop things growing in the water - was probably going to use a proprietary fluid of 25% proplyene glycol with anti-corrosion and anti-bacterial, but no harm to add that as well.

    I've seen alot of the Thermaltake stuff around and thought it was respected, but perhaps there are better things out there, as you suggest. Thought this post might bring out some overclockers ! Thanks for the other options, I'd also considered a simple pump, radiator and T filling junction, but also like the idea of a reservoir to give more water volume and a bit of extra cooling. More water should allow me to run longer if the radiator and pump is a bit underspec.

    So it's all a bit of a guess at the moment. These are the figures I think I'm looking at:
    1. Don't want to spend more than £90 if possible
    2. Want something to fit and forget - don't want to spend hours fiddling
    3. Probably looking to dissipate about 200W, although I'll go with Jonathan's 300W
    4. Prefer to run with a litre or so max because I'd like it all self contained near the spindle and water weighs ~1kg per litre!
    5. Don't want the pump or fan to make too much noise - otherwise I'd have been better off with the aircooled version and this project is about a quiet overall system to replace that noisy router.

    I'll do some more digging and if I take the plunge on something and it works I'll post it out in my build log.
    Thanks
    Last edited by routercnc; 30-08-2010 at 09:31 PM.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

  9. #9
    How come you never went for the air-cooled type?

  10. #10
    Hi George,

    Two reasons. The built in fan creates extra noise, bit like a muted hair drier, and there's nothing you can do about it. Obviously nothing like a router in level, but I'm after peace and quiet. The water cooled spindles are probably about the quietest available, unless you know different. Since I'll be cutting alot of balsa (plus some liteply) I'm hoping that the overall levels during cutting will be fairly low, and I'll be able to hear the radio again. Also, for long runs I don't want to upset the neighbours.

    Secondly the exhaust air flow blows down onto the cutting area (although it could be ducted away, but you don't want to restrict the flow). This blows all the fine dust (much of which you can't see) out through your collection shoe before the vac has a chance to grab it. With water cooled there is none of this.
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Jcb water cooling adventure part two.
    By jcb121 in forum Metalwork Project Showcase
    Replies: 5
    Last Post: 04-07-2014, 07:46 PM
  2. Do you need to water cool erhm a water cooled spindle?!!
    By HankMcSpank in forum Generic Chinese Spindles
    Replies: 18
    Last Post: 02-10-2013, 09:59 PM
  3. Replies: 17
    Last Post: 18-09-2013, 06:32 AM
  4. i7 Water cooling system
    By Jonathan in forum Metalwork Project Showcase
    Replies: 19
    Last Post: 01-01-2012, 06:27 PM
  5. (Video) Water spindle cooling system
    By jafc76 in forum General Discussion
    Replies: 0
    Last Post: 30-12-2011, 02:31 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •