first infusion

well here goes…

first part i pulled off…

if im correct to cure this problem, i need my bag not to be as tight?

alsi om using a west system epoxy, it says to mix with a ratio 5:1 and id does seem to gel very quick i would be worried on a large part.:eek:

also, i got really worried because this appeard

i thought the part would be ruined but no?? it seem to happen when the epoxy started to gel. maybe because i didnt de gass it??:confused:

so overall im happy, need a baggy bag and maybe change mixing ratio. also add a catch tank. but im happy

ready to clear coat :slight_smile:

Great job on your first infusion! My first didn’t look that good and they were sheets!! Sorry I don’t have an answer for you where you ask if the bag is to tight. I didn’t think the bag could be to tight from vacuum. :confused: I guess that’s why I’m still a hobbyist :blink:

material and or bag was bridging in the corners. best thing to do is control your vacuum, raise it slowly and press in the corners with a rubber squeegie. Also mix epoxy at exact mix ratio, do not change the ratio thinking it will change the cure speed. If you need more time use a slower hardener. Overall not bad for your first shot

The line bubbles in the blurry picture indeed are bridging. Take some more effort to place the fibers exactly in the corner. After pulling a bit of vacuum, take a plastic stick, and push the fiber in the corners. The bag can be extremely oversized, make sure it does not bridge anywhere. We want creases, no bridges.

The Christmas Tree shaped bubbles are air that was introduced through a leak. If you see this, chase for leaks. Best thing is to chase them beforehand, doing a vacuum drop test, and using a leak detector to find the smallest of leaks.

But overall: absolutely not bad for a first timer.

A resin catch pot indeed is an insurance for your pump. You can also use it to degass the resin. (you will need a pump which can develop a deep vacuum for that).

As for resin: West also has the Pro-Set range which might be more suitable for you, or use a slow hardener (206 or 209)

Thank you for the useful information. Im glad i made mistakes as only way i could learn :slight_smile:

To back what others said. Yes, the bag was too tight in the corner. Release vacuum, push everything you can in that corner, pull vacuum again. Make sure you have enough material of course. Can’t push already stretched bagging!
The air bubbles in the flow media…which side was that? Infusion or vent? Either way, it looks exactly like an air leak.

As for the catch tank. Even a simple thick walled PVC pipe, or alum. pipe, with welded, or sealed caps. Add barb fitting for your inlet, and vacuum on the other side…and poof. You can go crazy with using compression fittings that hold your part-side tubing…that way if resin gets sucked through, the resin will drop into the bucket, and NOT clog a barb fitting. Of course, add a ball valve to the vacuum line, and a vacuum gauge to the bucket. you can then shut off the vacuum and check for leaks.

Nice, the “camo” paint I like aswell