If you have built barstools, you probably have arrived at a way to best locate the footrest rail.

I sat on a barstool yesterday that had the rail too high for comfort, in that I had to raise my knees above where I would have liked. It measured only 14 inches from top of rail up to the hard seat surface. It felt like it was designed for an 8-year old. I think it should be in the range of 16 to 18 inches.

What do you place it?