Articles
Anodising Aluminium
Here is very practical description of this useful method of aluminium finishing. The results on the author's centering microscope are exceptional.(Thanks Brian)
The Ringbom Stirling Design Tool
Not really an article but a tool to help with the design of Ringbom hot air engines. I have no idea what Ringbom hot air engines are nor how the tool is used, it looks very complicated. If you have any questions, please address them to Derek Lynas who has said he may come along and give us a talk on this subject.
The tool is an Excel file so you will need to have Excel on your PC to use it. Click here to download it.
Tapping drill tables
Normal tapping drill tables only give you one drill size for each thread and they do not give the % engagement that results. These tables give you a list of drill sizes from the standard imperial fractional, metric and number/letter series and what will be the resulting thread engagement percentage. Thanks Bob.
Select thread type