How to find the centre of a hole.

[Alpha1]

I hinted that I probably would not want to do any more of the blocks and low and behold 12 of them turned up on my desk plus the heating housings. When I queried it with my Boss he said work from home just bill us. They have priced up getting them done by a machining company they have priced up getting them made from scratch the quotes are ridicules. Looks like I am stuck in the Shed for a little while. I made a start to day I managed two blocks and three pens for a custom order so a productive day. To morrow I am going to naff off to the coast for the day and catch up on Wednesday.
Its a hard life.
hmm whats next. What to do with all the Aluminium swarf.