Re: [CAD_CAM_EDM_DRO] Coolant on a little desktop mill (ie a Sherline)

Hi,

How about a pump and a filter from an aquarium, for example a pump head with an open filter? Most of the pumps are suitable for salt water tanks, which means ceramic stainless parts, i.e. they can take a lot of shit. ;-)
I have a bunch of Hagen Aquaclear heads, thay're adjustable from almost nothing to 1600litres/hour (400gallons) and can raise the water at least a meter and a half. They are not expensive and runs constantly for decades.

http://www.theaquariumshop.co.uk/ishop/images/1029/aquaclear402powerhead.jpg

Cheers,
Sven

----- Original Message -----
From: "AbbyKatt" <cnc@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, July 17, 2004 12:26 AM
Subject: [CAD_CAM_EDM_DRO] Coolant on a little desktop mill (ie a Sherline)


> Hello again my inexhaustable CNC army, :)
>
> Since I got the 10,000RPM pulley set for my Sherline (I highly recommend
> this to anyone doing CNC on a sherline, the performance of phenomenal!)
> I have been able to cut a heck of a lot faster (good), but for the first
> time I am running into problems with cooling (bad). The motor and
> spindle/pulley part is all fine, but the workpiece I was working on
> (aluminium) got pretty warm.. As the part is now pretty small it heats
> up way too hot for me to touch with even a few minutes of machining, I
> also have to continually spray WD40 on the cutting tool when making
> plunge cuts to prevent it getting ali welded to it and resulting in a
> lollipop of almiminum.
>
> So here's my question.
> Cooling Sherline/How?
>
>
> Since a sherline was never designed for cooling in mind, I imagine the
> leadscrews and other bits of ferrous metal are going to corrode
> horribly! Also, while my mill is somewhat nicely shielded with clear
> plastic panels, I am pretty worried about spraying coolant all over my
> workroom (my TV room/loung too, incidentally).
>
> What's a nice cheap solution for a machine of this size, or an elegant
> one?
> Will a windscreen wiper pump do?
>
> Can I use WD40 as coolant instead of that nasty yellow stuff? That way I
> get lubrication for free and my mill will never corrode (or does this
> mean that fine dust will get into the ways and grind my machine
> instead?)
>
> Lots of questions, but I guess it's something which seems simple and may
> not be... (like many CNC things, experience will show the best answer)
>
> Thanks again,
> Abby
>
>
>
>
>
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