We built “No Mister Misty” for a bunch of machines around our shop and they 
work great.  Traditional misters force coolant/lubricant under pressure out the 
end of a nozzle which atomizes the coolant.  Most of that goes into the air and 
after time your shop will be filled with a mist of coolant for you to inhale.  
Our (not) mister uses a needle valve from McMaster that is epoxied into a 
machined brass block and allows you feed coolant through the valve which is 
then injected into the side of a stream of low pressure air, both coolant and 
air stream are at the same pressure.  There is then a tube 4-6” long with a 
small (flat faced) nozzle on the end with a 0.040” hole in it  That way the 
drops of lubricant are NOT atomized, but are carried out in tiny droplets in 
the air stream.  The vast majority ends up where you aim the nozzle and not in 
the air.  You can regulate the amount of coolant quite precisely with the 
needle valve.  They create very little mist.

-Tom

On Mar 21, 2019, at 8:36 AM, Ken Strauss <ken.stra...@gmail.com> wrote:

>> -----Original Message-----
>> From: TJoseph Powderly [mailto:tjt...@gmail.com]
>> Sent: Thursday, March 21, 2019 7:32 AM
>> To: Enhanced Machine Controller (EMC)
>> Subject: Re: [Emc-users] mister nozzle shape
>> 
>> a quick google reminded me why this was familair
>> try googling 'spray nozzle'
>> i got
>> https://en.wikipedia.org/wiki/Spray_nozzle
>> and it showed me that the flat surface exit made NO atomization
>> thats not what you want, sorry
>> ( i was trying to achieve the jumping water effect seen in many fountains
>> and that flat exit was great for the hot dog of water effect )
>> if you want the fluid stream broken into tiny droplets ,
>> the web page lists a lot of geometries to try
>> tomp
>> 
>> On Thu, Mar 21, 2019 at 10:50 AM Gene Heskett <ghesk...@shentel.net>
>> wrote:
>> 
>>>> On Wednesday 20 March 2019 21:29:19 TJoseph Powderly wrote:
>>>> 
>>>> Hello Mr Nozzle shape
>>> 
>>> Did not get any useable hits on this side of the pond. URL?
>>> 
>>> Cheers, Gene Heskett
> 
> Thanks for the link. Sometimes Googling for the obvious terms gives the best
> results!
> 
> 
> 
> 
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