Very nice looking !   Cover with duct tape (how appropriate) before
glassing to get a smooth interior with less work.

For complex shape like this I find it easier (and better) to do the hard
coat and mold release than use duct tape.  I also have found that the
polyester 'Paint n' Patch' that you can get at the hardware store makes a
very nice filler to use for any holes or irregularities on the urethane
mold.  I mix the epoxy slurry to about the consistency of thick paint and
put it on with a brush.  Gives a very smooth surface.

Attached pic is heater housing I made with similar approach.

Al

The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org