Metric Threads

July 30, 2017 Nigel 0

The most commonly used type of general-purpose screw thread, one of the first international standards agreed when the International Organization for Standardization was set up in 1947. Metric threads are becoming more common in model [more…]

Picaxe Robot

July 15, 2017 Nigel 0

My first play with a PicAxe controller and a servo based robot. The first place to start is here: PicAxe.com Well, actually this wasn′t the first place I started. Firstly I spoke to a friend [more…]

Slitting Saw Mandrel

July 15, 2017 Nigel 0

I needed a Slitting Saw Mandrel and so thought I would share the build. This article does not include all of the dimensions, more just pointers and approach. This particular mandrel was made for 16mm [more…]

Gear Noise

July 15, 2017 Nigel 0

Gear whine – Generated by meshing gears due to the vibration caused by failure of the rolling action between the mating teeth due to: Minute imperfections in manufacture of Tooth pitch circle (radius and centre) [more…]

Gear Design

July 2, 2017 Nigel 0

Fundamentally there are a few different gear designs: Bevel Gear – Conical shaped gears, the angle between the input and output shaft is anything except 0 or 180°. Double Helical Gear – The double helical [more…]