Talk Composites - The Forum for Advanced Composites

Getting surface tension bubbles on fine details...

http://www.talkcomposites.com/Topic36833.aspx

By Mangy_Dog - 5/25/2020 6:52:30 PM

So im using graphite filler, 1 desert spoon with my 140ml resin... But i have also tried it with pure resin.

Im getting a a uncomfortable amount of surface tension bubbles. Not gass bubbles from mixing (i cant degas not got the hardware)

Its more a case of some corners of fine detail not releasing the bubble for resin to flow. I have tried shaking the mould even used a sander to add a little vibration.... Hasn't worked.



The bubbles are being trapped in the corner, these details are face down in the mould and resin in injected from the top. flowing through and up through air vents. Also those two rivet looking holes should look more like rivets but are also trapping air...

Now sure what to do.