English to French Tech/Engineering Engineering (general)

Contexte : logiciel pour imprimante 3D
The software slices your part, automatically generating a raft, supports where necessary, and a layer of release material between the raft/supports and the part itself.

Après de nombreuses recherches, je ne vois pas quel pourrait-être le terme en français pour désigner ce "raft".

Explicacion supplémentaire du client :
Use Raft toggle: Rafts help prints adhere to the print bed and sinter correctly. Disabling rafts will reduce print time and cost but increase the likelihood of printer and sinter failure. We highly recommend that you keep rafts enabled unless your part has been specifically designed to print without a raft.