Supporting > Boilers

A WATERTUBE BOILER FOR MY TRIPLE EXPANSION ENGINE

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Laurentic:
OK John, at least you have sorted that out. 

Was just thinking before that perhaps for repairs it might be a two burner job, one burner to get it all up to a 'reasonable' temperature, not to hot but a bit below soldering temp,  then a small pencil jet for tackling the wee leak, so as the heat required for that repair soldering is only concentrated in one very small spot where its needed.  I don't know - just thinking out loud really - I'm no expert!!

You surprised me with the material costs - thought they would be way higher than that - who is your supplier?

Chris

tghs:
a good method is to silver solder in a darkened space,, that way you can see the glow of the sections, where you need more heat and where you need less..

Laurentic:
John - having looked at the drawing again I can see that the boiler dimensions are much smaller than I had envisaged looking at the photos, so yes, much less material needed at much less cost!  But would stiil like to know the supplier you favour!!!

Chris

simplyloco:

--- Quote from: Laurentic on February 16, 2024, 01:55:20 PM ---John - having looked at the drawing again I can see that the boiler dimensions are much smaller than I had envisaged looking at the photos, so yes, much less material needed at much less cost!  But would stiil like to know the supplier you favour!!!

Chris

--- End quote ---

The 6mm tubing came from an auto supplier, very cheap. This guy is not a metal supplier, but he has stuff at sensible money! This piece makes two boilers: I still have the other half...

https://www.ebay.co.uk/itm/235228385642

John

Kim:
Ugh... I feel your pain!  :(

Very sorry to see that damage. Could you just cap those three tubes off? Or solder a repair patch over the top?  Probalby not possible, but it's just so sad... :'(

Placing a heat shield around the areas you're not trying to solder might help.  Just keep the heat off the areas you're not focusing on.

Enjoy your trip! 
Kim

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