- Joined
- Aug 3, 2017
- Messages
- 2,437
That optical flat method is interesting... though I guess I would have just found the split-line by removing the cap, using an edge finder, then re-adding the cap back.
Yup, probably a sane person would do that. I don't trust my edgefinders much better than 0.001". If you don't drill and bore right on the split line, you end up splitting the cap on a chord of the circle. With such little clearance between the parts, it doesn't take much for you to not be able to assemble the parts. The indicator method is as accurate as your indicator (0.0001"). The optical flat can be replaced with any good and flat surface (carbide insert, gage block, etc.) but I have a small flat for stuff like this ($20 on ebay).That optical flat method is interesting... though I guess I would have just found the split-line by removing the cap, using an edge finder, then re-adding the cap back.
I love this community and sharing here has helped me get the kicks in the tush that I need from time to time to keep moving on longer projects. I've also learned a ton here and hope I can contribute a little bit back.Thanks SO much for taking us on The Grand Tour of this build.
I’ve thoroughly enjoyed it so far and appreciate your documenting it for us.
Good luck with your move.
I think the workholding is absolutely the most difficult thing about working with castings. Mill vises are great for bar stock but suck at holding oddly shaped parts. I'll say that ~75% of the time I have spent on this engine has been setup and fixturing. Lots of time with an indicator making sure things are lined up. Really gets you thinking about the best way to do things, any ways you can do more operations in one setup, etc.As a newbie, the scary part of these kits is the amount of jigs that have to be made to just work a part... This is very intimidating for me...
I am so grateful for you taking the time to share the process... all of it, the good, the bad, and the ugly...
Good luck with the move!!
As a newbie, the scary part of these kits is the amount of jigs that have to be made to just work a part... This is very intimidating for me...