[Land-speed] Fiberglass Male Plug

[drmayf]

Gathering up my smarts...from you folk! I am going to make a foam and 
metal buck or male plug to make a fiberglass mold from which I can make 
a new nose piece for the Sunbeam. I have seen folk just glass over the 
plug with out any particular preparations and then wrestle with getting 
the foam out of the inside. That might work well but it seems to leave a 
coarser finish on the glass.  I think I want to shape the foam and then 
bondo it to make it smooth, paint it and finish the plug like the 
exterior I want the nose piece to have.  Then I will wax it and then put 
PVA or another thing parting material on it. Then a gel coat for the 
ultimate smoothness.  The use glass weave and mat to make the female 
mold. Lots of layers. The before I remove it from the plug, add some 
stiffening structure to the back side. Remove it from the plug. The 
remove the plug.  Repair any imperfections in the mold with maybe 
plaster of  Paris and re paint it. Then wax and PVA followed by gel coat 
of my favorite color. When that sets then do the glass work on the 
inside.  Add some ribs and stiffeners on the inside. And then mount it 
to the car.

But, th efirst question is, what kind of bondo or filler goop woudl work 
best in the kind of application. There seems to be a lot of them.  
That's prety much the only question I have for now, but more will crop 
up later I am sure.

Any help or thoughts out there?

mayf

-- 
drmayf
---------------------------------
world's fastest sunbeam. period.
Flying mile average: 204.913 mph
Top Speed: 210.779 mph