removing bubbles from polyester resin

[beau]

I have read about removing bubbles from epoxy resin, can I use the same technique with Casting polyester resin

[Newboy]

Vibration will do it.

[joe greiner]

Air flow over the surface - same thing that holds an airplane up. Google [bernoulli].

Cheers,
Joe

[Evanism]

I watched a video of a guy who put down this ultra glass like resin. After he mixed and spread it down over the surface he used his little butane torch to hit the areas with the bubbles, they popped almost instantly.

I'm not necessarily saying it is appropriate for this, but I am doing a repair soon myself and thought about it a bit. The negatives of course are if the epoxy is flammable or yellows. I would think a quick test would answer this pretty fast.

e

[Bernoulli]

same thing that holds an airplane up. Google [bernoulli].

Cheers,
Joe
Actually it doesn't. Bernoulli's equation is for fluid (incompressible) dynamics. I imagine it's still taught that it makes airplanes fly, but Newton's the man. The more air molecules you push, the more they push back.

However, blowing air across the surface will lower the pressure and should help if the surface tension is not too great.

[Avery]

Actually it doesn't. Bernoulli's equation is for fluid (incompressible) dynamics. I imagine it's still taught that it makes airplanes fly, but Newton's the man. The more air molecules you push, the more they push back.

However, blowing air across the surface will lower the pressure and should help if the surface tension is not too great.




Bernoulli's principle applies equally well to gases at low speeds.

[hughie]

I just blow on it.