After watching the original video when it was first released, 3D printing really doesn't play a massive part. Welding is the real winner. 3D printing is still

After watching the original video when it was first released, 3D printing really doesn't play a massive part. Welding is the real winner. 3D printing is still plausible for building jet engines - just not to the average person for now and the foreseeable future. Metal printers (using fine powders) seems quite viable, but they are costing $100k+.