Hardening hammerite paint by baking

Mr Benn

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Mar 30, 2012, 9:11:32 AM3/30/12

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Any idea if I can bake Hammerite paint to harden it? If so, what
temperature and for how long?

The Natural Philosopher

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Mar 30, 2012, 9:18:54 AM3/30/12

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Mr Benn wrote:
> Any idea if I can bake Hammerite paint to harden it? If so, what
> temperature and for how long?

Hammerite seem to have formulated the paint for 8-25C ambient according
to the web site.

I don't believe its a thermosetting paint - just a thick tough oil
enamel. - leastways it used to be .

--
To people who know nothing, anything is possible.
To people who know too much, it is a sad fact
that they know how little is really possible -
and how hard it is to achieve it.

Tim Watts

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Mar 30, 2012, 10:03:51 AM3/30/12

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Mr Benn wrote:

> Any idea if I can bake Hammerite paint to harden it? If so, what
> temperature and for how long?

Yes - I did this many decades ago when I needed a rock hard finish fast on a
few brackets.

100C (or a bit hotter) in an oven for 2-3 hours did the job.

But it will stink the kitchen out, so wait for SWMBO to go shopping. Pop yer
gearbox in the dishwasher at the same time ;->

Best to let the piece cool in the oven too - the paint can be a little soft
at that temperature even after baking - but will be rock hard on cooling.

--
Tim Watts

Andrew Mawson

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Mar 30, 2012, 10:08:39 AM3/30/12

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"Mr Benn" wrote in message news:jl4be5$932$1...@dont-email.me...

>
>Any idea if I can bake Hammerite paint to harden it? If so, what
>temperature and for how long?

Beware Hammerite is no longer the Hammerite of old. ICI bought out Finnigans
Speciality Paints, and 're-formulated' (cheapened) Hammerite to be white
spirit based, rather than the Xylene that it used to be based on. Result is
it never gets as hard as it did! Xylene based hammer finished paints are
available from other sources.

AWEM

Mr Benn

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Mar 30, 2012, 11:00:07 AM3/30/12

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"Andrew Mawson" <andrew@please_remove_me.mawson.org.uk> wrote in message
news:XpSdnQb4usT6I-jS...@bt.com...

Thanks Andrew

With the newer white spirit-base Hammerite is there any benefit to be had by
baking it?

Martin Brown

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Mar 30, 2012, 11:10:36 AM3/30/12

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On 30/03/2012 14:18, The Natural Philosopher wrote:
> Mr Benn wrote:
>> Any idea if I can bake Hammerite paint to harden it? If so, what
>> temperature and for how long?

I'd suggest leaving it out in the nice warm sunshine instead.
Unless you really want to stink the house out!

>
> Hammerite seem to have formulated the paint for 8-25C ambient according
> to the web site.
>
> I don't believe its a thermosetting paint - just a thick tough oil
> enamel. - leastways it used to be .

Pretty sure it crosslinks as it cures so the final Hammerite paint
finish after full cure is fairly resistant to solvents. The new stuff
now has been meddled with and isn't as aggressively xylene based.

--
Regards,
Martin Brown

harry

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Mar 30, 2012, 1:28:27 PM3/30/12

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On Mar 30, 2:11 pm, "Mr Benn" <Mr_Benn_use...@yahoo.com> wrote:
> Any idea if I can bake Hammerite paint to harden it? If so, what
> temperature and for how long?

http://www.hammerite.co.uk/information/science.jsp