Re: bubbles in plastic

[Subscuba@aol.com]

Hello Bill,

I baked the polycarbonate for about two days at F 200. This was probably an 
overkill but I didn't want bubbles. The thickness was 1/4 inch. Again this 
was for a wet sub. After the soak at F 200 I took it up to around F 300 to F 
330  where it flowed down around my mold. A polished Wok. You can see the 
results on the website (PSUBS). I then took it cold in about two hours. When 
I finally installed it I took some plastic polish available from Boat US and 
buffed it up. While I wasn't completely pleased it worked just fine. The 
biggest problem was temperature control of my wife's oven. I would suggest 
something bigger with precise temperature controls and a circulating fan, 
Pizza Oven?

I would suggest acrylic if you are using this for a pressure port, maybe. I 
do like the impact resistance of polycarbonate for my application. 

Good luck,

Ken Martindale