Ok so bit of an update. As you all know the car is back with me and moving at a glacial pace.
I managed to spend a bit of time on the lathe/mill today and I have started making some brackets to bolt the rear calipers on to. I've only made the lower portion so far. Anyway, onto the pictures!
^Take stock and lop a piece off.
^Turn down to size on the lathe
^Start taking some passes to flatten off the sides.
^I ended up setting up a dial gauge on the ways of the lathe to see how far off the piece was. After a bit of mucking around I had the piece aligned to withing around 0.002" from parallel with the y (??) axis of the lathe (from end to end). Close enough for me and it should still fit together ok.
^Final passes
^End on shot after finish
^Remove from lathe and admired my handy work.
^1/4" channel and I love the way freshly machined parts feel in the palm of your hand!
If that doesn't really make sense to you, here is a word picture: the lip that I have milled into this part will overlap into an upper part that this bit will hang from. The caliper will bolt to this bit that I've made. The reason for this is I needed to space the caliper about 28mm away from the flange where the three bolts hold the drum back plate. I still need to drill holes for the caliper and also some holes for some bolts on the other side to the 'U' bit. I thought this would make a better connection than just bolting flat bits together. Hopefully the engineer likes it - if he doesn't all that has been wasted is my time as I already had some stock lying around that I'd bought previously.
I am hoping to make the top bit of the bracket tomorrow. Hopefully more pics to follow.