I would build the LR2 right now. For these reasons:
- There is no timeline or even a promise of improvement for LR3. It really is vaporware right now.
- The LR2 is a great machine. No urgent problems that need to be fixed. You can enjoy the LR2 while waiting for the LR3. Even if the LR3 comes out this spring or summer, there’s no reason you can’t enjoy the LR2 until fall or winter before updating.
- Many of the parts in previous updates have been reusable. So you aren’t losing much by building two versions. The printed parts are almost certainly going to need to be replaced. The electronics are almost certainly going to be reusable.
- You also have a lot to learn. Any CNC machine is going to come with a lot of details that are not obvious. You can learn a lot and your second build can be done by someone with experience (you!).
- When LR3 first comes out, the first users will find things out and the community will be spending some time trying to learn what quirks are common. If you’re new to CNC, better to get started on an established version.
Each new version always brings up this question a lot. Maybe there is a place we can post this so we don’t have to rewrite it a bunch.