Metal is the tier where a base stops being a delay and starts being a defence. It is also the tier where the farming cost becomes the real constraint, which is why the resource breakdown matters more here than the screenshots.
These builds use metal for the parts that take damage and cheaper tiers where it makes no difference — that mixed approach is standard practice and is why most of them are tagged mixed as well as metal.
Before importing, check the ingot figure in the resource breakdown against what you actually have. Template Hammer will not place a build you cannot pay for, and a half-placed shell is worse than no shell.

A high-capacity defensive tower layout combining Heavy Auto Turrets and Tek Turrets in a single native build.

A detailed longboat platform build using additional structure pieces and steampunk official content.

A three-part Gacha farm pack containing the main farm, a compact cubby section and a center support pillar.

A compact two-by-two auto turret tower using additional building cosmetics for its support structure.

A straightforward defensive turret tower with a native Template Hammer file for rapid placement.

Left and right four-structure alignment variants for building clean triple-stacked vault storage.

Three compact snapping variants for placing anti-tank obstacles in repeatable defensive patterns.

An elevated PvE base with broad sightlines and enough internal space for core crafting and storage functions.

A seven-structure alignment utility for placing dedicated storage and cryofridges into a clean lowered floor.

A large functional headquarters supplied with a separate twelve-foundation part for aligning a lowered storage floor.

A large seasonal 13-by-13 defensive base layout with extensive structure coverage and fortified utility space.
Each template page shows the full resource cost, including metal ingots, derived from the exact pieces in the file. That is the number to farm against.
Rarely. Interior walls and decorative pieces take no raid damage, so most competitive builds spend metal only on the outer shell and load-bearing structure. The piece breakdown shows how a given build splits it.
Less than you would like. Metal is a meaningful step above stone against conventional damage, but Tek-tier attackers will go through it — layering and turret coverage do more than tier alone.
No. Templates place what the file contains, so an upgrade means placing a new metal build rather than converting an existing one.
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