infusing a multi part mold

[Fgayford]

How does one go about infusing a 3 part mold.The part lines would be air leaks. Is there a way?
Thanks.
Fred

[Herman]

Envelope bagging for small moulds.

Or if that is not possible, I once infused a multipart mould (boat) which had a recess for a line of sealant tape. The mould builder had been thinking BEFORE making the mould. Quite impressive.

Also possible but cumbersome is to bag the seam on the outside. Through-bolts then are a concern.

[Fgayford]

Thanks Herman
Was the recess line in between the flange before the bolts, kind of like an o ring arangement? If so I imagine you lay down the sealant tape in the groove and then bolt together squashing the tape for the seal.
If not could you please explain further.
Thanks again.
Fred

[Herman]

The recess should be near to the part. the bolts should be outside of the cavity, as these can only create havock. Trying to make bolts airtight is no fun.

[Herman]

Oh, there is also some special (reusable seals for them, but these are designed to go all the way round (RTM / RTM light.) where these are used for sealing the top mould on the bottom mould.
Creating a subtle end arrangement for these seals is somewhat difficult.