For the first 35 minutes of Stourbridge's sixth home defeat of the season they produced tragedy and comedy of errors of Shakespearian proportions, culminating in two wasted penalty chances from 30 and 40 yards straight.
Twice within a minute, Ben Harvey aimed for the corner only to watch the ball curl harmlessly into goal. The reason why he had simply not kicked for goal was that Stourbridge were already 29 points behind.
Lacking the vast experience of injured Lee Crofts and Julian Horrobin up front, disjointed Stourbridge had won little quality possession, failed to keep it when they did have it and conceded a string of penalties.
Backed by a stiffish breeze and in a display befitting his name, Blackheath?s Steve McCashin had indeed cashed in, landing five penalties from 20 to 50 yards and two conversions with no misses. He also succeeded with his eighth kick, a sixth penalty on the stroke of half-time reached at 32-7.
The visiting tries were by flanker Frank Louw after a 25-yard line-out drive and prop Des Brett, from the base of a ruck seven yards out after Stourbridge failed to clear their lines despite ample time.
But, in the 36th minute, Stourbridge captain and flyhalf Duncan Hughes conjured a moment of magic with a one-handed pick-up and flick from his toes to No 8 Will Rowley, whose inroads made a try for winger Toby Wilson, Harvey converting.
Stourbridge were transformed after the interval as Harvey converted two more tries, first on 68 minutes when Hughes made a little break to send over the impressive Rowley and five minutes later when Neil Mitchell scored.
Director of rugby Mitchell, making his first appearance this season as replacement lock, loitered free on the blind side of a penalty lineout drive to give Stourbridge a sniff of unlikely victory at only nine points down.
However, Blackheath had the final word with a try by centre Dave Fitzgerald on a counter-attack after Harvey dropped the ball on halfway.