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Old 07-23-2008, 11:21 PM   #1
farmerbill13
 
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Default lubricant for machining aluminum

I've used kerosene and wd-40 in the past,just wondering if there was anything cheaper that worked just as good?I'm machining cooling fins on a cylinder for a hot air engine.Thanks,Bill



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Old 07-23-2008, 11:45 PM   #2
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Default Re: lubricant for machining aluminum

Welcome to HMEM Bill!

You'll never find a better cutting fluid for aluminium than straight kerosene.
It may not be the safest thing. I've had more than one little yellow flame
flair up in front of me.

There are some commercial products available such as Tap Magic Aluminium
Now THAT is the TOP of aluminium cutting fluids.
For the cost of 16 ounces of that you can buy a gallon of kerosene that is almost as good.

Rick



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Old 07-24-2008, 12:05 AM   #3
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Default Re: lubricant for machining aluminum

Thanks Rick,tap magic is good stuff,I have used it on deep hole tapping and reaming and your right about the price.

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Old 07-24-2008, 12:10 PM   #4
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Default Re: lubricant for machining aluminum

WD-40 is my choice. I have heard some people get good results from automatic transmission fluid too.

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Old 07-24-2008, 12:59 PM   #5
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Default Re: lubricant for machining aluminum

Hi Bill

I usually use denaturated alcohol. You will have to open the windows but it works quite well and the surfaces look nice.

Florian

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Old 07-24-2008, 05:37 PM   #6
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Default Re: lubricant for machining aluminum

I have been using Barbecue lighting fluid with good results

Paul

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Old 07-24-2008, 08:38 PM   #7
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Default Re: lubricant for machining aluminum

Does anyone know where you can buy clear cutting oil?

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Old 07-24-2008, 10:28 PM   #8
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Default Re: lubricant for machining aluminum


Quote:
Does anyone know where you can buy clear cutting oil?

There was some discussion on this on another thread. A-9 appears to be mineral oil with some additives. Perfume dye and a couple "secret" ingredients. So mineral oil from the drug store or big box store should work fine.Mineral oil is clear
Tin

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Old 07-25-2008, 12:41 AM   #9
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Default Re: lubricant for machining aluminum

I have a very OLD Machinery's Handbook here.
It is a 1st Editon printed in 1914.
(No it is NOT for sale!)

Aluminium was a precious metal then.
The book recommends "Rendered Beef Tallow" as a cutting fluid
for aluminium.

Cut a chunk of fat off a cow, boil it into an oil and your all set!
Well... It worked in 1914!



Rick

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Old 07-25-2008, 12:53 AM   #10
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Default Re: lubricant for machining aluminum

Metal Mickey: Are you looking for a high sulphur cutting oil or a cutting fluid for some particular metal?

Tim: Those 'additives and secret ingredients' make a big difference in the mineral oil for cutting aluminum. Like the additives and secret ingredients your wife puts in the flour when she makes a chocolate cake.










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