I'm planning to reuse a sumpguard mould that was made for wet layup so doesn't have flanges for vac bagging.
I didn't want to weld the flanges on as it may distort the mould so instead I planned to usePU adhesive to attach the flanges leaving a small recess which I could then fill with silicon as IME epoxy resin doesn't release well from PU adhesive.

Any different views or advice before I do this?

Thanks
Stuart

Hi,

I assume that your flanges would also be made out of Aluminium, since you are talking about not welding them cos of distortion.

And since it would be a metal to metal bond, I would use epoxy glue. I always heard Matt saying PU was perfect for composite to composite bond, while epoxy would be a bit better for metal to metal, or composite to metal.

Maybe a couple pics of your mold / flanges would help us to figure it.

 



 


    A $1000 electronic device will always protect a 10 cents fuse

Yes - photo would help
As you can tell this mould hasn't been used for a couple of years and needs a good clean before anything but you can probably see it has 3 sides (f,l,r) with a small 60 degree flange and then just flat at the rear.  Epoxy sounds a good way to go as it leaves a smooth slippery finish - any other advice appreciated.