Yesterday Gerardo (with my assistance) landed another near perfect silicate bond of an ear to a test mass.  Only a tiny "feature" appeared in the upper corner of the bond after the ~2hr mark of curing - a speck or dimple which is extremely hard to spot, with no apparently bubble of air around it, but instead a bit of an interference rainbow.  This feature did not change over the following 3 hours of yesterday afternoon and did not warrant any alarm, so we considered it good.  The placement of the ear is within 0.04mm of spec (under 0.1mm tol).  Upon inspection this morning, the "feature" had not changed in shape or size.

Spare ITM06 test mass can be used if needed anytime after May 26th, 2017.