The longer I think about it, the more I think I’m going to redo that weirdly-shaped part (Part “B”, the pink one in the above post) yet another time. I’m not quite happy with the topology and I think I can do better. I’m going to wait until after the stream, though.
By the way – while I found out that piece is definitely less wide than the original block, I still did have to guesstimate the width in the end as I wasn’t able to find a front or top plan for it. @theluthier I know you at least have a reference drawing for the digger arm that gives your piece a much more exact or correct size. So next week after you’ve finished your stage-two work on the digger arm, if possible I’d like to get a copy of it so that I can adjust the width of the hinge knuckle to fit precisely.