But I also discovered that I have some "fat bottom" 1.5L that don't fit in the 4" pipe and I like to put up some wine in the small 375ml "gift" bottles. So I made a 2nd jig.
I used a cedar 2X6, cut the holes with a hole saw - 4 1/4 ", 4", 3 1/4" and 2 5/8". This will hold every different size...