Hi Andrew,
This is quite inspiring but I don't know if I have the patience!
My Capco is all stripped down, 5 layers of paint removed and in grey primer.
I have the knee sat on my milling table and with an 8" square I can see 0.3mm wear in the Z-axis!
Too much to scrape I think so I'm wondering how I can machine it on my mill which is really too small. I'm currently thinking I can clamp the knee flat to the table and spin the head through 90 degrees.
I'm not sure how much the dovetail is worn or if it's just the face. Looking at your method I would need to get the face perpendicular again before testing the dovetail. I have a 55 degree dovetail cutter but the face width isn't enough to re-machine the dovetail in one go - it's about 21 mm.
I have a good reference face to the lhs where the 4 tapped holes are. This is for a block gib so sees no wear. You can almost see the shadow created by the 0.3mm step at the top. (Very little wear at the bottom.)
![](http://listerengine.com/coppermine/albums/userpics/10017/P1100402.JPG)
![](http://listerengine.com/coppermine/albums/userpics/10017/P1100404.JPG)
Phil.