Parts can be easily clipped from the metal sheets and as shown on instructions, tweezers make an ideal tool for bending or twisting connection tabs. An excellent DIY hobby model kit.
The Metal Earth models are amazingly detailed etched models that are fun and satisfying to assemble. Each model starts out as square metal sheets and you simply pop out the pieces and follow the included instructions to assemble your model. No glue or solder needed.
The German U-Boat XXI
The German U-Boat XXI were a class of German diesel-electric submarines designed during the Second World War. They were the first submarines able to operate primarily submerged rather than spending most of their time as surface ships.
They were the first submarines designed to operate primarily submerged, rather than spending most of their time as surface ships that could submerge for brief periods as a means to escape detection or to attack. They incorporated a large number of batteries to increase the time they could spend under water, to as much as several days, and they only needed to surface to periscope depth for recharging via a snorkel. The design included many general improvements as well: much greater underwater speed by an improved hull design, greatly improved diving times, power-assisted torpedo reloading and greatly improved crew accommodations.