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

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sbwhart:
Picked up some more silver solder yesteday I recon I will have put about £30 worth into the boiler by the time its complete. Got on with drilling the rest of the stays after carfully marking out started by drilling the holes in the throat plate, its a a real awkward position up underneath the boiler tube, so that I can reach made up a extended centre drill with a 1/8" drill at the other end:- this is the beast.

Drill a hole in the end and stuck them in place with Loctite.

They ran out quite a bit so had to get them running as best I could with a perswader :hammer: also centre popping the hole helped because of the length it was quite flexable so it found position for itselfe.

This is the set up first all the holes were centre drilled.

And drilled 1/8 right through throat plate and fire box.

And her it is with the stays assembled.

Called it a day at that and went in to watch the footie.

Stew

Stilldrillin:
That`s a bit clever Stew! Well done...... :clap: :clap:

While I was employed, I often had to use that method, to drill air holes around long spigot diameters....... Had some 8" L x 5/16" Dia. centre drills made up.

I`m sure I was followed home, one dark night. ::)

Wonder where it is now..... :scratch:

David D

shoey51:
nice work stew :clap: :clap:

sbwhart:

Got some more prep work done today for the next soldering campaign.

Drilled the holes for the side stays, 28 each side right through outer wrapper and fire box wrapper.
This is the set up the well annealed soft copper needed some support from Jacks, centre drill first then 1/8" drill, every fourth hole I pooped a rivet into to keep everything lined up

Gave the stays a trial fit, it looks like a hedgehog.

When it comes to soldering I'm going to thread a ring of solder over each stay as it passes through the water cavity, and one ring around the head of the rivet in the fire box that way each stay will get two rings of solder one to fill the fire box wrapper and the other to fill outer wrapper.

Made the rings by winding the solder around a length of 1/8 bar then snipping them off to make the ring.

And her they all are all 130 they used up 4 lengths of solder at 2 squid a length.

Cheers

Stew

Dean W:

Looks like you have the makins of chain mail, Stew. That's a lot of snipping and cutting.
Those rivets are just sticking out everywhere. Good job. BTW, how long is a stick of your silver?

--- Quote ---every fourth hole I pooped a rivet...
--- End quote ---

Ooh boy. You must have sore tushie by now! :)

Thanks for the new update! Great thread!

Dean

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