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Author Topic: WD 40 as a coolant  (Read 9071 times)

mickyrubble

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WD 40 as a coolant
« on: July 26, 2012, 04:04:44 pm »
Hi ,
i have treated myself to a Emco Unimat SL1000 lathe and a bit of a green horn at this metal spinning mularky,(last time was 40 years ago at school).Any tips from you lathe gurus would be most welcome.I have read that it is ok to use WD40 as a coolant/lubricant ,any one have an opinion on this.
 :-) :-) :-) :-) :-) :-)
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Circlip

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Re: WD 40 as a coolant
« Reply #1 on: July 26, 2012, 04:22:02 pm »
Buy a gallon of Parraffin and mix a bottle of perfume to taste in it, much cheaper.

  Regards  Ian.
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TailUK

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Re: WD 40 as a coolant
« Reply #2 on: July 26, 2012, 04:23:07 pm »
I don't know if it's absolutely necessery for most small jobs especially if your toolbits ground to the right shape.  It's can't hurt unless you get things too hot (to much cut or speed).  It'll smoke like the devil if you do.  3in1 might be a better choice.
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TailUK

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Re: WD 40 as a coolant
« Reply #3 on: July 26, 2012, 04:24:43 pm »
Quote from: Circlip on July 26, 2012, 04:22:02 pm
Buy a gallon of Parraffin and mix a bottle of perfume to taste in it, much cheaper.

  Regards  Ian.

Or that!
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Subculture

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Re: WD 40 as a coolant
« Reply #4 on: July 26, 2012, 04:27:13 pm »
Unless you're taking large cuts (unlikely on that machine) you can work dry generally.
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Bryan Young

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Re: WD 40 as a coolant
« Reply #5 on: July 26, 2012, 04:53:45 pm »
Not really wanting to be a bit of a wet blanket.....when I was doing a "proper job", the aircraft maintainers used to wash down the aircraft with WD40......until they were told (via the MoD) that WD40 is carcinogenic, and "liquid" use was no longer to be used.
OK in small spray form (we gathered) but not as a fully fledged liquid.....for cooling or anything else. BY.
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unicorn

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Re: WD 40 as a coolant
« Reply #6 on: July 26, 2012, 05:53:09 pm »
Quote from: mickyrubble on July 26, 2012, 04:04:44 pm
Hi ,
i have treated myself to a Emco Unimat SL1000 lathe and a bit of a green horn at this metal spinning mularky,(last time was 40 years ago at school).Any tips from you lathe gurus would be most welcome.I have read that it is ok to use WD40 as a coolant/lubricant ,any one have an opinion on this.
 :-) :-) :-) :-) :-) :-)
            As you`ve said its a lubricant and should never be used when turning , also when it ignites it burns quite fiercely  ---  buy some cutting oil for turning steel and use a candle [parrafin wax] when turning aluminium.
            If you intend to use the unimat for metal spinning ie forming a soft metal then be extremely careful  --  due to the high loads required  --  and the motor power
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mickyrubble

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Re: WD 40 as a coolant
« Reply #7 on: July 26, 2012, 08:39:35 pm »
Hi,
thanks for your replies.The lathe will mostly be used for nonferrous metals.Where is reccomended for supplying  proper lathe coolant.Sorry for all the question but i did say i am a green horn!!.
 :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed:
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TailUK

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Re: WD 40 as a coolant
« Reply #8 on: July 26, 2012, 08:46:25 pm »
Quote from: mickyrubble on July 26, 2012, 08:39:35 pm
Hi,
thanks for your replies.The lathe will mostly be used for nonferrous metals.Where is reccomended for supplying  proper lathe coolant.Sorry for all the question but i did say i am a green horn!!.
 :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed: :embarrassed:

Have a look on fleabay. Failing that your local Machine Mart will have them or here:

http://www.chronos.ltd.uk/
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boatmadman

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Re: WD 40 as a coolant
« Reply #9 on: July 26, 2012, 08:49:03 pm »
You dont need coolant for brass, just sharp properly set up tools.

Ian
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nemesis

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Re: WD 40 as a coolant
« Reply #10 on: July 26, 2012, 10:07:05 pm »
Hi, You need a metal spinning lathe, built like the proverbial due to the high stresses involved. nemesis
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TailUK

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Re: WD 40 as a coolant
« Reply #11 on: July 27, 2012, 12:58:23 pm »
I think Micky meant "turning" when he said "spinning" the Unimat wouldn't have the grunt to spin sheet metal.  I own a SL1000 myself which I rebuilt from several sources over the years.  I'd interested to pictures of your lathe Micky especially the chuck or collet system you've got.
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HS93 (RIP)

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Re: WD 40 as a coolant
« Reply #12 on: July 27, 2012, 03:56:50 pm »
you can buy WD40 by the liter then buy a cheap pump up Garden spray from Aldi it will only last 18 months as the seals rot,  this is what a Lot of good engineers recommend and use on some of the good model sites in the past, and a few I know Personally,  good for ally and other metals .   make your own choice.

Peter
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HS93 (RIP)

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Re: WD 40 as a coolant
« Reply #13 on: July 27, 2012, 04:04:18 pm »

this is worth buying for tapping Brass and ally also helps drilling etc. a tin will last a life time Chronos do small pots but they work out very expensive.

http://www.warrenbestobell.co.uk/trefolex-cutting-compound.asp

Peter
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Circlip

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Re: WD 40 as a coolant
« Reply #14 on: July 27, 2012, 05:07:25 pm »
Rather than WD40 (Expensive) look for "Duck Oil". Buy it by the litre, about half the price of the other and don't use a lubricant for cutting or tapping Brass.

  WD is not a lubricant although an oil (Parraffin) based product, its main property is that of a Water Displacement agent and don't worry about combustion being a problem, not with a Unimat.

  Regards  Ian.
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steamboatmodel

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Re: WD 40 as a coolant
« Reply #15 on: July 27, 2012, 05:31:55 pm »
Quote from: Circlip on July 27, 2012, 05:07:25 pm
Rather than WD40 (Expensive) look for "Duck Oil". Buy it by the litre, about half the price of the other and don't use a lubricant for cutting or tapping Brass.

  Regards  Ian.
Duck Oil is a new one on me Ian I had to look it up;
http://www.debgroup.com/sites/default/files/products/fab/uk/swarfega-duck-oil-fab.pdf
It looks like it is similar to WD40
http://www.wd40.com/products/one-gallon/
Regards,
Gerald.
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Circlip

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Re: WD 40 as a coolant
« Reply #16 on: July 27, 2012, 05:35:58 pm »
Don't know what it costs now Gerald but when I bought it, WD was £26 a gallon and DO was £13. But basically the recipe is what I originally stated. Be telling us next not to use Parraffin as a submergent for spark errosion machining.

  Regards  Ian
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HS93 (RIP)

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Re: WD 40 as a coolant
« Reply #17 on: July 27, 2012, 05:44:56 pm »
we all Have our own views,

Peter
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HS93 (RIP)

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Re: WD 40 as a coolant
« Reply #18 on: July 27, 2012, 05:56:22 pm »
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ukmike

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Re: WD 40 as a coolant
« Reply #19 on: July 27, 2012, 07:47:44 pm »
Soluble oil, the type that turns milky when mixed with water.

The choice of the professionals from the beginning of time.

Mike.
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mickyrubble

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Re: WD 40 as a coolant
« Reply #20 on: July 27, 2012, 09:49:19 pm »
Hi,
thanks for all the replies keep em comming.TailUK here are the pics you wanted to see.HS93,Trefolex sounds like the thing to get,i didn't know of those sites but i did know about Madmodders,some really intresting projects there.
UKMike the white milky stuff is what i remember using at school ,but cannot recall what it was called.



In my opinion i would need a 4 jaw chuck ,live centre and a basic set of cutters,any suggestions.
To get me going i bought Simple Model Steam Engines vol 1 and 2 by Tubal Cain.
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HS93 (RIP)

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Re: WD 40 as a coolant
« Reply #21 on: July 27, 2012, 10:52:47 pm »
I had the same lathe for 15 years complete with the mill attachment it was great building model cars but as time went on I bought a MD65 and had that for some years the emco is a great lathe.
Peter
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TailUK

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Re: WD 40 as a coolant
« Reply #22 on: July 28, 2012, 12:14:25 am »
Quote from: mickyrubble on July 27, 2012, 09:49:19 pm
Hi,
thanks for all the replies keep em comming.TailUK here are the pics you wanted to see.HS93,Trefolex sounds like the thing to get,i didn't know of those sites but i did know about Madmodders,some really intresting projects there.
UKMike the white milky stuff is what i remember using at school ,but cannot recall what it was called.



In my opinion i would need a 4 jaw chuck ,live centre and a basic set of cutters,any suggestions.
To get me going i bought Simple Model Steam Engines vol 1 and 2 by Tubal Cain.
I've always known the white stuff as "suds".  they tell me it's carcinogenic but what isn't these days.  Your lathe is the same as mine except along the way I lost my 3 jaw and acquired the milling stand.  I've also got the pinion handle that allows you to move the headstock barrel in and out.  I'm thinking of getting a collet set to fit mine but can't determine what size will fit my collet chuck.
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