cx: Since the flask in this case is just a 5 gal. pail I wanted to be able to bed more than one pattern and when the sand is fully aereated the
pattern must be held submerged. If I let go of the first pattern to insert a second one in the same pail as soon as I hit the air #1 pops up . With
the ring removable I just withdraw it, get another bucket, fill it, and bed the second pattern.