The Supply Chain Risk of Long Lead Time Components

The manufacturer will be concurrently working on multiple modules at the same time, because they'll they'll flow through their assembly line. So we just need to make sure that the four dreams arrived when they're ready to start on the second one and so on so. The forger if your supplier has to do a bunch of let's say, like custom configurations. Set up jigs to get everything in place and that's what takes - how long does the literal machining or the literal melting take not that long?