Building a Boiler for a 3 1/2" Gauge Locomotive

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sbwhart:
Thanks Dean

I'm going to use dry acid salts for the pickle from her http://www.chronos.ltd.uk/cgi-local/sh000001.pl?REFPAGE=http%3a%2f%2fwww%2echronos%2eltd%2euk%2f&WD=acid&PN=Dry_Acid_Pickling_Salts%2ehtml%23aACD100#aACD100

I bought some about 12 months ago but I've since found out that you can use citric acid which is a lot safer and more environmentally friendly in fact I'm mulling over using the citric.

Stew

sbwhart:
Thanks guys

Well yesterday was a case of best laid skeams and all that. I'd more or less got the afternoon free to get on with the boiler, but my daughter turned up with 2 month old grandson, now if theirs anything better than a grandson for keeping a grandad out of his shop please tell me ;D, so only manages to get a little done.

Cutting out the rad on the throat tube plate using jewelers saw and home made sawing table.

Throat plate having first fitting to boiler tube.

I annealed the boiler tube using a rough hearth pieced together with the thermalite blocks and the biggest burner I've got for my torch just to try it out, the blocks worked well but the burner scared the crap out of me talk about a roaring flame, not too easy to control, I've got two torches so using the next size burner down with both torches will give me more control when it comes to soldering.

As you can see from the pic the acid bath worked will, I ended up using the acid salts only needed to make up 3 liters to cover boiler and adding about two tablespoons of salts gave me a Ph between 2 and 3 (if I'm reading the indicator paper correct)

Cheers

Stew

shoey51:
yes grandkids sure do keep you out of the workshop :D

thats coming together nicely mate :thumbup:
looking forward to the next stage

Graham

sbwhart:
Thanks Graham

Well yesterday was yet another case of "best laid skeams of mice and men all gang away". I could see the whole day in front of me in the shop, but I'd forgotten about the Boss, we'd booked seats for a Don McClane (of American Pie Fame) In Liverpool for the evening, but the Boss thought it would be a good idea to go early and have a wander around the shops visit the Tate modern art Gallery at the Albert Docks etc etc so strike one afternoon in the shop. Enjoyed the visit and concert though, and came across one interesting fact you guys across the pond will be interested in, theirs a very nice bronze statue at Albert Dock commemorating emigration donated to the city by the Mormon Church, it's plaque states that over 9 Million people emigrated from Europe to North America through the port of Liverpool:- just what % of the population are decended from those emigrants now :scratch: the mind boggles.

Back on topic:-

The wings of the fire box rapper need to be extended to do this I will have to make a joint, this can be a simple lap joint but this will take up some water space or a joggled joint, I'm going to use a joggle joint. First thing make a joggling tool, now this isn't going to be a fancy tool just dog rough and functional.

Mill a bit of flat steel (garage door thanks Ralph) flat and put a groove up it 1/4" + plate thickness + a bit for luck.

Then with the plate well annealed and a 1/4" square bar squeeze the plate into the grooves.

This will bend it out a bit wack it back square with a bit of ally bar and a hammer.

And thats the joggled joint formed.

Cheers

Stew

Stilldrillin:
Stew......

"Every day, in every way..... You`re getting better & better!" :wave:

Nice one, again..... :thumbup:

David D

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