So, to make the olives. These are quite different from those commercially available and are made from copper. First, chuck a suitable piece of copper rod in the three-jaw chuck with enough material protruding to make three or four olives. I should mention that thick wall copper pipe is also suitable for use. Using one of the union nuts that you have previously made, turn the outside of the rod or pipe to be about 5 thousandths of an inch (0.1 mm) smaller than the diameter of the threaded portion of the nut (photo 18). This allows clearance for the olive to swell slightly when tightened.
Next centre drill and then drill about ¼ inch (6 mm) deep a hole, with a drill size about 4 thousandths of an inch (0.1 mm) larger than the pipe size you are using (photo 19). The ‘little extra’ allows a small gap for the silver solder to penetrate easily when we attach it to the pipe. Next part off about 1⁄16 inch (1.5 mm) long (photo 20). As the olive is parted off, it tends to distort and slightly close the hole previously drilled but this is just what we want since this reduction in diameter stops the olive sliding down the pipe when silver soldering takes place.
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Denne historien er fra 4635-utgaven av Model Engineer.
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WORKSHOP TIP - Boring Eccentrics
I am making a 1 inch Minnie traction engine and have arrived at the machining of the eccentric straps.
Wenford A 7¼ Inch Gauge 2-4-0 Beattie Well Tank
The stage has now been reached where the well tank body can be completed but beforehand there are some internal details to add.
Vertical Boiler Locomotives
Vertical Boiler Locomotives
Union Nuts, and How to Make Them
These are quite different from those commercially available and are made from copper
SHOWCASE Paul's Engine
One day my son Paul came to me and asked if we could make something in my workshop, so that he could learn engineering processes.
CLUB NEWS
My secret’s out!
Building Dancer - The Boiler
Dancer needed a boiler that would be somewhat larger than the size permitted under the Model Engineering exemptions in the New Zealand regulations.
An Inverted ‘Ross Yoke' Watercooled Stirling Engine
As with all my hot air engines they are cheap to build, mostly from scrap
A Draught Proposal
A Draught Proposal
A Boiler Feed Pump
A Boiler Feed Pump