methylated spirits

This topic has 12 replies, 6 voices, and was last updated 6 February 2015 at 22:24 by JohnF.

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6 February 2015 at 16:51 #1370
UJ Newton
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@ujnewton33659
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6 February 2015 at 16:51 #178733
UJ Newton
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@ujnewton33659
Want to soft solder a meths burner for a very small boiler but am not sure which soft solder to use..Spent long enough on internet to write a thesis on meths !but still dont know what temperature it burns at!
6 February 2015 at 17:04 #178735
Mike
Participant
@mike89748
Try www. stirlingengineforum.com/viewtopic.php?f=1&t=935 . They give the temperature of a meths flame as 1100 degrees C.
6 February 2015 at 17:34 #178738
UJ Newton
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@ujnewton33659
Crikey,thats warm ..think I might just buy a gas burner ..Thanks Mike
6 February 2015 at 17:38 #178739
martin perman 1
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@martinperman1
I repair meths stoves for boiling water in kettles and use soft solder, your burner is via a wick I assume so the container shouldnt get that hot.

Martin P
6 February 2015 at 18:01 #178745
UJ Newton
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@ujnewton33659
Ok Thanks Martin..whichsolder do you use?
6 February 2015 at 18:23 #178749
martin perman 1
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@martinperman1
Lead sticks and bakers fluid, no idea of grade as it was acquired from my father in laws tools which he left me, I make fuel tanks for my petrol engines without any problems.

Martin P
6 February 2015 at 18:35 #178752
Neil Wyatt
Moderator
@neilwyatt
> They give the temperature of a meths flame as 1100 degrees C.

Flame temperature isn't a good guide to it's actual heating ability. Bear in mind you can pour whisky or brandy on ice cream and burn it without the ice cream melting (why would ANYONE want to burn such things?)

You need a blowpipe to get a meths flame intense enough for even silver soldering the tiniest of items.

Neil
6 February 2015 at 20:33 #178767
UJ Newton
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@ujnewton33659
Ha ha..I burn them..Being in catering I get paid to..Utterley ridiculous!
Glad about meths though..I m sure I cam build burner and tank lot cheaper than buying a gas one..Fumes arent the same either
6 February 2015 at 20:33 #178768
Neil Wyatt
Moderator
@neilwyatt
Just read that properly – this is for the burner NOT the boiler.

I'd suggest using Comsol (286 degrees C) but bear in mind that the evaporating meths will cool the burner and once its all evaporated, there's nothing left to burn.

Neil
6 February 2015 at 21:03 #178770
nigel jones 5
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@nigeljones5
Come on Neil…….don't you put poison darts into a blow pipe……
6 February 2015 at 21:05 #178771
UJ Newton
Participant
@ujnewton33659
Ha ha..I burn them..Being in catering I get paid to..Utterley ridiculous!
Glad about meths though..I m sure I cam build burner and tank lot cheaper than buying a gas one..Fumes arent the same either
6 February 2015 at 22:24 #178779
JohnF
Participant
@johnf59703
Hi UJH i would use tin and resin flux or the self cleaning flux used by plumbers, this is slightly acidic so you need to wash of with water when finished, same with killed spirits. You could equally use tin mans solder 60/40 lead/tin but tin flows better and makes a stronger thinner joint. Tin you can buy the "lead free" solder at the plumbers merchant which is near enough pure tin.
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