## Burrell Crosshead Guide into Context

I needed to put the Burrell crosshead guide into context. As in bolt it to the cylinder block and check it against the engine overall. After making the crosshead guide I was nervous that it looked a tad large against the cylinder. “However, I will reserve judgement until this is put in context with the … Read more

The Record Power BS250 had lost its edge and so I went and bought some Bedford bandsaw blades. The BS250 bandsaw is available with a number of different makers marks on it. However, this is a good functional bandsaw for the hobbyist. I think a bandsaw is one of the most important tools in the … Read more

## Dormer Centre Drill

Just bought a few Dormer centre drill bits as my box of centre drills are getting very tired. By tired I mean worn. Not having an accurate sharpening method means for small centre drills (~1/8th inch or 3mm) I tend to throw them away and get new ones. I know that is wasteful and I need … Read more

The Burrell crosshead guide or maybe the trunk guide. Must admit that I need to study the history of steam engines and the naming of parts. Anyway, back to this miniature traction engine design and make. The crosshead guide supports the joint on the two-part conrod design. It is the sliding mechanism for the conrod … Read more

## Plane Angle

The plane angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius. The secondary SI unit for the plane angle is the radian. The inclination of one line to another. One complete revolution equals 360° (degrees) or 2π radians. 1 degree (°) = π/180 … Read more

## Pressure and it’s Units

Pressure and it’s units is an interesting topic. Pressure is defined as the force exerted per unit area. The SI unit of pressure is the pascal or newton per square metre. 1 bar = 1×105 Pa 1 standard atmosphere (atm) = 1.01325×105 Pa 1 lbf in-2 (psi) = 6894.76 Pa 1 tonf in-2 = 15.4443×106 … Read more

## Worm and Wheel Runs Smoothly

The worm and wheel runs smoothly in either direction. Plus there is hardly any backlash. Not bad for a homemade hob to cut the teeth on the wheel gear. Although, I think the deep thread on the worm helps give a robust engagement. The worm and wheel just after I had machined them. The gear wheel … Read more

## Enameling onto Steel

Enameling onto steel appears to be a sensible idea based on the fact that antique enamel signs were on steel. How hard can it be? The first task was to make a mask. I did this using the Sainsmart Genmitsu 3018-pro. This was designed using Carbide 3D and machined using a 1.2mm diameter slot drill. … Read more

## Burrell Steering Column

The Burrell steering column feels like a big step as it adds another level of detail to this tiny miniature traction engine. First of all though a quick look at all of the parts. The steering wheel itself was machined from solid brass. Just 22mm in diameter with a 8BA thread in the centre. The … Read more

## Frequency, Wavelength and Speed

Understanding frequency, wavelength and speed is fundamental to everything around us. From noise and vibration, chatter on a lathe tool to the light we experience from objects. Waves move energy from one place to another without any accompanying matter. Sound waves, ocean waves and electromagnetic waves are some of the examples; other, more complicated types … Read more