Soldering issues

[AWheating]

you also have to include the inital cost of the 2 primus bottles or the cost of the petrol and time lost going down the merchant to get more gas.

primus have less of a carbon footprint tho.

 

[tamz]

primus have less of a carbon footprint tho.

Is that because you can use it as a hammer :smile:

 

[Mike Jackson]

I always found the primus dirtier than Rothenberger. Used to get a soot deposit on the fittings.

 

[TBServices]

i've got both a primus 2000 and a superfire 2
just bought a refill for the primus a few weeks ago £7.60
i can get disposable propane for under £7, not rothenburger but similar.

the disposable bottles are 400g but the primus is only 360g

i never seen primus gas refills for £4 for a long time, where you getting them at that price.

Plumb centre mate. £3.85ish plus vat. I have 2 bottles in van at all times to use with y superfire 2.


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[Bernie2]

Primus 2000 was the torch to get for years up here. If you had anything else it was usually hard to get refills. My usually torch though was a 7kg bottle of propane, tube and torch, saves waiting for refills so often.
But they will not allow the 7kg bottles in multi story blocks in case they leak and the gas goes down the service ducts.

I have also used Petrol and Paraffin lamps. When you have used those you realise how easy gas lamps are to use.

A mate of mine put a petrol lamp on a cooker gas ring in a customers house to warm up and then forgot about it. Result new back of house.

Both where great when cold they where like flame throwers and a well pumped cold lamp flame could reach 15 feet no bother with its flame. Surprising what amuses you when your young isn't it?

 

[Subby]

Wondered if someone can help me,

I am using rothenberger mapp gas with a bullfinch torch. What i am finding is when im trying to solder 15mm copper fittings, they are burning (going green and green flame) before the solder is taking to it!!

Any tips (im also using powerflow flux)

move the flame about the pipe and fitting more, if you keep it in one place, it tends to burn the flux out. Move the flame away from the fitting and touch the end of the solder where the pipe meets the fitting frequently to see if it is hot enough to melt the solder.

 

[Resolute]

Make sure you've got the tip of the miner blue flame on the fitting when soldering.

 

[tamz]

Soldering is something you do subconsciously ie you do it without thinking. It is something that is actually quite hard to explain how it is done properly. Any boys i have had i would tell them to watch the flame, don't burn the flux etc etc and they would get leaks if i wasn't watching them because they were concentrating too much trying to follow what i said. I learned to just let them find their own way.
It is just an instinctive thing you will learn.
Btw bin your mapp gas. It is too hot for normal work. It is twice the price, it will discolour your pipe and burn out your heat mats. It solders quicker but takes longer to cool.
Some like it because it is hotter but the only real use on a domestic is if there is a touch of water in the pipe. You can solder with oxy acetylene or oxy/propane both of which are even hotter but why would you.

 

[tamz]

Both where great when cold they where like flame throwers and a well pumped cold lamp flame could reach 15 feet no bother with its flame.

Lighting it on the kitchen floor with the flame squirting up the wall and no one batted an eye. How times change lol

 

[WHPES]

I had this happen this week when working outside. Flux had got damp. Throw out and buy fresh. I have a 500g tin of flux in the workshop and little flat tins in the toolbox. I fill the little tins up from the big tin save the whole lot spoiling.