Hi guys,
I recently infused a flat panel, lay up schedule was a layer of cf and 3 layers of chopped strand mat with epoxy. after demolding I notices that some of the resin remained on the glass and as a result the imperfections that you can see in the pictures below. first I thought it might be due to bad prep and waxing of the glass, however, next i noticed that there were white areas (probably air or maybe unsaturated fiberglass) visible from the other side of the laminate. what do you guys think happened. (could it be because of some bridging on the vacuum bag? about 38 sec into the video)
wax used: partall #2
150 cps epoxy
28" hg vacuum
26" hg just before demolding.
resin was not degassed
link to the video
The flow speed seems to be ok. If you work with the MTI hose (I think I have seen it in the vid) place it about 1cm to your laminate, you don’t need a brake zone.
Has your vaccum been stabil?
Try degasing your resin, most times it will help.