Has anyone figured out a way to combine UV activated resin with vacuum bagging?
I suppose as long as the bag is permissive to UV rays, it should work.
So where is the catch?
If UV Rays can get thru the bagging material it will set.
what would the point be of vac bagging with UV? A repair? Why? It’s not EPS/Epoxy so you’re not skinning a blank with a timber flex veneer or balsa.
The way I heard it from one of the UV PE/VE vendors was that by suffocating the resin while it kicked you’d end up with a bone dry and sandable lamination.
Stick in the mud here, but collecting flamable gas vapors, and sending them through a pump and motor, could give some unexpected results. be careful!
Thanks everyone!
As to why and what: I’m trying to make my own fins.
Gullwing and Gull-whale fins specifically.
I try to use Zerovoc UV curing epoxy for everything, suitable or not. Just to find out what works.
So no issues about flammable gasses, and the vac bagging would indeed leave a non-tacky sandable surface, which the Zerovoc does not tend to develop when left open to the atmosphere while curing.
With a UV-permissive bag, the vacuuming process could be shortened to a few minutes.
It can be done it dose work!
Its a huge problem if the laminate is thicker than 4 mm or rough 1/8" it over heats so if your only laming a board no worries but if you want to make a fin panel forget about it
Thanks Hydro-skiper.
I’m planning to make some lightweight fin core by using a mold, then cover it with (?carbon?) cloth and UV-resin, wiggle around with the vaccuum bag it until it looks just right, then hold it in the sunlight to set it.
Main problem might be the black carbon blocking UV. Might have to use normal glass cloth. Or 2 component resin or catalysed resin with carbon fibre.
Carbon will block the uv ,
Using the core filler will help
Put up a bit of a step by step to help everone lurn about it
Kind regards john