+x

 

Hanaldo - 4/13/2021 9:38:44 AM

The bubbles in those last 2 pictures are not a problem. They will be due to what appears to be a slight amount of bridging, which is where trapped air liked to collect. What is an issue is when you get air leaking in that creates pattern in the flow mesh that look sort of like trees. This indicates a big leak.

Re. glass strand in seal of catchpot, yes this is enough to be a leak. Same with strands of carbon or glass or peel ply caught under the vacuum bagging tape. Sealing surfaces need to be very very clean.

The types of leaks that will cause you dramas are not audible, you can't hear them. The ones you can hear hissing are massive leaks, and are very obvious and easy to find. Generally you can't even hear the small ones with ultrasonic leak detectors, they are absolutely minute - and yet enough to ruin your infusion.

Again, ignore the gauge - it isn't accurate enough to pay any attention to what it says. If the bubbles you are getting in those last 2 photos are your only concern this time, then they are nothing to worry about. If you dont get any more air than that before the resin cures, the part should turn out well. If it does not, then it is likely to be another issue which, as Chris suggested, could be infusion speed, resin viscosity etc. But my first impression of looking at your first photos is you had a big leak. So hopefully this one turns out better.

+x

 

Hanaldo - 4/13/2021 9:38:44 AM

The bubbles in those last 2 pictures are not a problem. They will be due to what appears to be a slight amount of bridging, which is where trapped air liked to collect.