Good morning

When I used to work in a composite shop we used to use silicone rubber 2 part mix for making insert/formers that we would make to make shapes by adding the soft mix (plasticine texture) to the awkward parts of a mould let it set to a flexible rubber state and use it as infill pads/inserts ON TOP OF the prepreg carbon during the Autoclave curing process to help prevent bridging in awkward spaces and with it being a type of silicone it didn't stick to the resin and it was easy to remove afterwards and was reusable.

Do you have a product like this that does not need curing with temperature that I could use  as a reusable insert with wet layup carbon and your EL2 epoxy laminating resin and no vacuum .

Regards

Ian

Hi Ian,

Pretty much any RTV Silicone will do the job.  I would recommend our Addition Cure Silicone Rubber as it is tougher and has a higher tear strength compared to other silicon products such as Condensation cure silicone.

Depending how tight the corner is and the number of layers, you may need some weight or force applied to the silicone intensifier to ensure it stays in position.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant