removing a sleeve from a blind hole.

Softly softly catch monkey indeed. The main thing needed was patience as usual. Judicious use of the pry bar did it, but it is very tight in there. However I present for you the said split cotter with no anti rotation and associated pool of crud in the depths.

Now that you have it exposed, it might pay you to ease the fit a trifle before reinstating it so that both halves of the cotter do their share in gripping the drilling spindle in the future.

I'm willing to bet you will see from the wear pattern that the upper half has a bright shiny patch where it was contantly hard up against the spindle being unable to float slightly as the design intended. Anoither bonus might be marginally easier movement and control of the spindle.

Regards

Brian

No , I wasn't triumphant ( because I was clueless about such devices anyway ) , only mentioned it Because there had been some speculation. It's good to know these things because my last experience of anything cotter was getting the pedals off my bike when I was about 8, - I remember mangling them and thinking 'I haven't done that very well ...

Just wrestling with how to take a few thou off the diameter whist maintaining a nice finish ( apart from the file stroke which I also don't know how to do. Looks tricky to hold on the lathe without marring the surface.

.

It might be easier to clean the hole out very thoroughly, and then if-needs-be, open it out a touch with emery paper on a wooden dowel.

MichaelG.