Wow, that’s a cracking bit of work, mate!

I really enjoyed reading through it, the attention to detail you’ve put in is good to see Mike, as are the renders and models you shared. It all looks brilliant!

You’ve clearly poured some serious time and effort into making it right. Fair play for not chucking the HV4 in the bin and calling it a day. The fact you took something that far out and brought it back into usable spec speaks volumes. I really like the belt drive design too, it’s tidy!

So many things folks can do now with 3DP being so widely available. I like that you went for a pro print where it counted; that was a smart move for this sort of job. It’s the kind of thing that looks deceptively simple on the surface but takes a load of thinking and fettling to get just right, so well done.

Definitely appreciate you sharing this, it’s builds like this that remind me why I love this place and the people in it. Can’t wait to see what you do next (and I’ll be having a proper nosey at that Fairbanks Morse thread later!)...

Edit: Bit late now maybe, but you could always post that up here as a build log too.