theres a lot of variables you will have to control. If you can consitantly control them you can get a good bond. Otherwise you will find B-side laminate to delam easily.
Any advice on those variables?
Would it make sense to thicken the bonding layer ( apply with a roller) so that it isnt soaked up by the wetted cloth?
not really since we dont do that perticular process. It will be a balance of vacuum level, various size perforated or un-perforated release film, and/or B-staging the resin. The trick will be to consolidate your laminate without pulling too much resin off B-side and still be able to remove air from the laminate. What are you making?
I am doing a non tapered wing.
The mold is 5,5 yards long and 1,2 yards wide.
A fairly uncomplicated mold split in two halfes with 3 honeycomb longitudinal inlays (one for the Flaps, one behind the spar and one from the spar ending up 2 inches before the leading edge).
To lay the inner preimpregnated laminate into the mold I believe it could be useful to build a frame to avoid winding the wet laminate on a roll beeing able to apply aditional bond on the laminate areas that will be in touch with the honeycomb panels.
As the resin content would be ideal after the infusion I need some method to avoid drying up the laminate. So I believe perforated film should be avoided.
Some kind of peelply that doesnt soak up epoxy?
What are your grumblings on the B stage? Wouldnt a long potlife epoxy (2 hours) be enough whilst working in a cold room?
Once rebagged I would apply full vacuum
you can buy manual prepregging machines that work very nicely and are fairly cheap, might be a better direction than infusing your laminate.
Regardless I would suggest making many test panels to confirm exact controlled variables that are needed before making your wing.
I thought about such a machine but never found an affordable one . All were hugely expensive
Ive used this one before: http://www.atlcomposites.com.au/files/products.equipment/wombat_senior.pdf
not sure of the price, maybe $1k-$2k?
you could easily make one too