Gene,

Do you live anyplace near a large body of water.  If so there is a
West Marine store near you.   Look for the paint there.  They sell
stuff used by boat owners who keep their boat in salt water 24x7.  The
best paint I found there is a catalyzed two part polyurethane.  It
comes in two cans.  you mix then and then most use the paint within a
short time.   You can spray it but it goes no well with a farm brush.
 How hard it it?  New cars now all have plastic painted bumpers, this
is when the car makers use on the numbers. It is tough stuff.
Problem is that whole price is over $100 per gallon and retail is
about $80 per 1/2 quart.    But if you are after "bought" you need the
kind of paint that is mixed just before use.

The spray=on "epoxy" just epoxy power fillers in it and a normal binder.

There is also the kind that uses UV light to catalyze the reaction but
that is even more expensive and needs special UV light "ovens".  The
dentist use this for filling now and my sister uses this in her finger
nail solon.  Ive had here paint a smallpartthen place it in the UV box
and then the only thing that gets it off is abrasives and a
Dremel-like tool.

The two part stuff will survive decades outdoors with direct exposure
to salt water, good enough.

On Fri, Mar 3, 2017 at 7:57 PM, Erik Christiansen
<dva...@internode.on.net> wrote:
> On 03.03.17 22:20, Gene Heskett wrote:
>> And I've not figured out how to put a good durable coat of
>> paint on it yet.  Even 6 months dry, it scratches like warm butter
>> handling it.  And what I put on last was some sort of an epoxy curing
>> Massey-Ferguson Grey implement paint in a spray can. Did that last
>> August on a 85F day.  28F & some bite in the breeze tonight at 22:20 pm.
>
> Dunno about spraypack epoxy, Gene - unless it's in two cans. The stuff
> my brother has put on the steel beams of his massive new veranda is
> two-pack, not spraypack. The <probably polyurethane> which went on my
> kitchen's cork floor nigh on 30 years ago was two-pack, and it isn't
> showing signs of wear yet. That is clear, but it must be possible to
> tint it, for other purposes.
>
> OTOH, if your swarf is coming off hot enough to soften epoxy, then maybe
> you need a really good bake-on powdercoat job? Or stove enamel, perhaps. ;)
>
> Things are quiet here - I've just finished carting and stacking 8 m³ of
> firewood under cover, after chainsawing some big rounds, too knotty to
> split. Winter's coming. (Well, OK, it's still 27°C/48.6°F in the shade
> out there, on the fourth day of autumn, but it's coming.)
>
> Erik
>
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-- 

Chris Albertson
Redondo Beach, California

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