In this video I make the cotter to secure the over arm bracket to the support bar of my Adcock and Shipley 1A milling machine. I wanted to ensure that this cotter would effectively provide plenty of clamping force so I decided to produce a general arrangement drawing. The cotter was machined on my Super 7 lathe and the milling machine.
It was found that in use the cotter provides ample clamping force with just a light use of a spanner on the 1/2in Whitworth nut.
in the next video I hope to do an analysis of how the cotter works to explain why it is so effective. Also I plan to complete this phase of the project.

00:00 Introduction
00:58 Design of cotter with drawings
02:56 Rough turning of cotter
06:02 Milling of part I of cotter
09:09 Preparations for painting casting
09:22 Finish turning cotter
11:25 Screw cutting 1/2in Whitworth thread
13:22 Turning female part of cotter
17:17 Milling female part of cotter
19:40 Making custom washer
20:28 Fitting of cotter into casting
21:31 Testing cotter for first time live

Related video on producing the casting for the support bracket:    • Making castings in Pakistan for my mi...  

Music used with permission from You Tube library: "Smokey's Lounge" by TrackTribe.