MOTM

Mark,

Although drilling steel and iron may cause sparking, we are talking 
aluminum here. With proper lube, including kerosine, I have never, in 30 
years, seen a spark off of aluminum. Kerosine is TOTALLY inappropriate 
for drilling other metals. Use any decent lube oil for steel or other 
metals.

Scott
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Mark wrote:
> On 8/3/03, Scott Evans, Gen Mgr put forth:
> 
>>Larry,
>>
>>What do you use as a drilling lubricant? I have always used kerosine for
>>drilling raw aluminum, but I'm not sure if this would attack the paint
>>on the panel.
> 
> 
> I can't speak for Larry, but since you posted to the list...
> 
> I wouldn't use anything as flammable as kerosine.  Drills often 
> produce sparks.  Any thin oil like CRC Cutting Oil should work fine, 
> and is much safer to use.  Flash rust is a non-issue with aluminum, 
> and a lubricant that contains water will help keep the bit cool. 
> Thats what I use.   Imho, plain silicone and multipurpose sprays 
> (like WD-40) are too "soft" and evaporate too quickly.  Not that it's 
> an issue with Stooge panels, but the use of silicone lubricants also 
> requires extra prep if you are going to paint the metal later.
> 
> 
> 
>  
> 
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> 
>