Centre Drill Profile

June 30, 2017 Nigel 0

I use centre drills all of the time, usually as a pilot drill in the lathe to give me a good starter for a larger drill. However, whey are they the profile they are? A [more…]

Steam Indicator Diagram

June 23, 2017 Nigel 0

The pressure in the cylinder is plotted versus the cylinder volume. This was developed by James Watt and John Southern to improve the efficiency of the steam engine. The work done is the area within [more…]

Mini Mill Belt Drive

June 18, 2017 Nigel 2

These mini milling machines (eg Amadeal XJ12-300) with the back gears suffer from gearbox failures and mine did some time ago – read about the experience of changing the gears for metal ones. Even after [more…]

Sanding Disc

June 18, 2017 Nigel 0

My bandsaw got to the point where it was very tired, the guides needed replacing, bearings in the wheels were struggling and it was a 3 wheel variety with an unusual blade length. All in [more…]

Mini Mill Gas Strut Conversion

June 12, 2017 Nigel 0

The spring that lifts the head of the milling machine (Amadeal XJ12-300) has been annoying me for some time. One big issue is the force is not consistent. However, it looked like a big job [more…]

Mini Mill Gearbox

June 11, 2017 Nigel 0

This is the Real Bull XJ9512 milling machine or for this particular case the Amadeal XJ12-300. I’d been using my mini mill (Amadeal XJ-300) for around 2 years and all was fine. Then I pushed [more…]

Warco Lathe Face Plate

June 10, 2017 Nigel 0

I have had this Warco WM240B lathe quite a lot of time and this was the first time I needed to use the face plate. I have to say that the faceplate that was sent [more…]