Mm. Well, thanks for raining on my parade...

If they would be difficult to tap, then I could use bolts to pass
through, and T nuts tapped for the bolt size.

Pete C. wrote:
Louis Ohland wrote:
Not sure if the 2-3-4 block holes are tapped, but that could be fixed.

Not easily I'd expect since the blocks should be hardened and ground,
making tapping them after the fact difficult.