Upon announcement of the NAR's Expired Motor Testing
Program, I built two rockets for use with the old motors. This
rocket is for the 18mm motors, the first of which was to be an
AVI D6.1-0 booster motor.
That booster cato'd and took with it the motor tube in the
booster. But that was easily replaced. The net effect was
blistered paint on both the booster and sustainer.
I have yet to burn any other of the target old motors, but it has suffered another cato (shown below).
The sustainer was also used in my daughter's science fair project.
Since it was designed as a throw-away, minimal effort was put into the
finish. No filling of the seams or wood grain was
performed. A couple coats of primer followed by sanding and paint
was all the effort that was made.
The airframe is BT-55. The idea was to keep it fairly light but
make it draggy. That way the low thrust D6.1 wouldn't have any
problem getting it going off the rod, but the drag would help keep the
altitude down. One of these days, I'll try another one of those
D6.1's 
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