< Detail Work 2 >
The elbows are utilized for many kinds of tubing work. They were assembled in a special jig. A short brass bar is cut 45 degree at its top, and then two of them are set up in the jig, as the photo shows. Finally they are silver soldered and finished with files.
Assembled strainer. So as to prevent solder joint break, I employed high temperature soft solder for assembly (melting point 300 deg). The strainer itself is an easy turning job.
The compressor governor is a complicated component. Many small parts, as the photo shows, were gathered and silver soldered. The upper component was fixed with a copper rivet, while the lower component was fixed with dummy nuts. Both components were silver soldered one by one.
The upper component was shaped with a file, then both components were gathered with a small screw from underneath and silver soldered again.
As a fascinating small detail of air-controlled train, I prepared "air hose" which will be mounted on the buffer beam. It also has a complicated shape. The hose itself was made from electric wire's rubber sheath. The chain is from a necklace. The castings at both ends of the hose were made from many machined parts as follows.
Machined parts for the hose tip casting. The right hand photo shows how to machine the main body.
Parts for the valve castings. The body has to be bent before turning in the lathe. The right hand photo shows the setting in the lathe. Note a lathe gear is employed as a balance weight.
The handle was made of brass square bar. It was carved in relief on the rotary table, after that sliced off by a slitting saw, and bent in a vise.
Each component was assembled and silver soldered. Both components will be screwed into the hose with suitable adhesive. The hexagonal part in the photo is a lock nut to fix the valve onto the buffer beam.
So as to secure the chain with screws, I added stainless-steel rings at both ends of the chain. The rings were cut from a coil made in the lathe as same as a coil-spring.