Ku hunguteka ka ku hisa ka lapi ra fiberglass i xivangelo lexikulu xa ku nga tshamiseki ka dimensional ya PTFE tape. Eka mahiselo ya PTFE sintering (360-400°C), ntshikelelo wa ku luka lowu saleke wa humesiwa. Loko yi nga siveriwi, lapi ra hunguteka; loko yi siveriwa, ntshikelelo lowu fihliweke wu pfaleriwile, leswi endlaka leswaku endzhaku ka nkarhi ku hunguteka hi nkarhi wa ku horisiwa hi adhesive (150-200°C) na ku hisa ka matirhiselo yo hetelela. Ntlhantlho: tirhisa pre-heat-set fiberglass leyingana <0.5% shrinkage eka 400°C, ku herisa ntshikelelo lowu saleke loko unga se peta.