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soldering with propane?

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Unread postAuthor: Cosmic Muffin » Mon Jan 12, 2009 5:21 am

ive never tried hybrids.
too complicated haha
i just cast a hot glue piston for my gun, hopefully it will work,
but im bloody scared that the soldering job will fail on me :?
oh well, only one way to find out
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Unread postAuthor: microman171 » Mon Jan 12, 2009 5:55 pm

Don't worry :-), as long as the solder is visible all the way around the fitting, and you know it was wicked in by the flux, you will be fine.
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Unread postAuthor: cdheller » Mon Jan 12, 2009 7:12 pm

Just a couple of thoughts on your soldering, you can take or leave them.

Flux has a couple of functions .

Cleaning ,tinning .

I don't know what brand fluxes you use in [ spooʍ ǝɥʇ ɟo ʞɔǝu ɹnoʎ ] but I imagine they are similar in action to whats in Texas .

Cleaning ,is self explanatory ,heat up a pipe swipe it w/ flux, it cleans it ,as mentioned in previous post wet rag helps when pipe is hot .

Tinning,,, solder doesn't stick to copper, tin will,solder sticks to tin.

Plumbing flux is made to be self tinning ,I do not know about electronics flux.

If the face of the fitting is too flocked to take solder you are screwed .

Solder or flux doesn't stick to impurity's that well ,enough so that a dirty face of a fitting will keep solder from sucking in.

Your ftg/pipe are annealed now and do not have the hardness they came with.

For what its worth
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"A lot of what is taken for engineering fact is nothing more than somebody`s opinion when you dig into it far enough."
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Unread postAuthor: microman171 » Mon Jan 12, 2009 8:06 pm

AFAIK, solder is made up of lead and tin. The regular mix is 60% tin and 40% lead. The flux is the cleaning agent as you said. The flux also makes the solder flow. It may for all I know only clean, and the fact the pipe is clean is what makes the solder flow.

If I were to solder pipe and I didn't need to do much, I would just use my regular electronics solder. It has a flux core, and does a nice job of wicking into the crack.
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Unread postAuthor: jamie e » Fri Jan 16, 2009 7:06 pm

25$ for a meter of 15mm pipe
$25 for a meter is good compared to the $120/meter a plumbing place in new zealand tried to charge me[/quote]
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Unread postAuthor: microman171 » Sat Jan 17, 2009 1:41 am

Are you serious? $120/m!

At Bunnings in NZ you pay $10/m.

What company was it? They must have been trying to rip you off real good.
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