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Oct 27 · 42.22 pre-release: ladders and crowbar break-insOct 23 · First-person mods are not officially supportedOct 21 · The Indie Stone on Java mods: download responsiblySep 28 · Build 42.21 Stable: zombie duplication fixesAug 26 · Security fixes on every branchAug 17 · Servers now handle up to 254 playersJul 29 · Build 42 goes Stable

Welding and metalwork

Build 42 split the old Metalworking skill in two. Welding is torch work: cutting, joining, metal barricades and walls. Forge and anvil work moved to the new Blacksmithing skill. This page covers Welding, with a note on the names older guides still use. Updated for Build 42.21 Stable and 42.22 Pre-Release, November 2026.

A warehouse at night
Car wrecks are the best Welding classroom
01Part

Metalworking became Welding

If you are coming from Build 41, the skill you knew as Metalworking is now called Welding. The crafting menu category is still labelled "Metalworking", which is why guides mix the names. One fan guide uses "Metalworking" to mean blacksmithing; the skill list itself says Welding plus Blacksmithing, and that is what we follow.

Item names changed too:

  • The propane torch is now the Welding Torch (some guides still say propane torch or blowtorch).
  • The mask appears as Welder Mask in the game; you will also see "welding mask".
  • Sheet metal is now Steel Sheet and Steel Sheet - Small.
  • Build 42 adds Welding Rods, a consumable that build recipes use up.
02Part

Torch, propane and rods

A full welding torch holds 10 uses. Refill it by combining it with a propane tank, which you keep. A full tank holds 5,000 units (game files). One guide puts a torch use at 70 units, so one tank refills about seven empty torches (one source). You can take a propane tank off a barbecue grill.

One report says a completely empty torch may refuse to refill on 42.20, so top up before it runs dry (one source).

The mask is required for torch work but is never used up. It narrows your view while worn, so take it off before walking around. A pack of welding rods holds 20 uses (game files).

03Part

Levelling Welding from zero

  1. Read Welding Vol. I before you start so the XP multiplier is active (see skill books).
  2. Wear the mask and dismantle burnt or smashed car wrecks. It gives XP even at level 0 and needs a torch with at least 10 uses.
  3. At level 3, weld metal sheet barricades on weak windows and doors. They need no magazine (one source).
  4. Read Welder Monthly magazines to unlock walls, crates and fences, then build what the base needs.

XP from dismantling furniture is off by default (the sandbox option "Maximum Dismantling XP Level"). The five welding VHS tapes give about 1,650 XP but by default stop helping at level 3 (one source). Starting skill: Welder +4, Mechanic +1.

BookLevelsMax XP multiplier
I: Basics of Welding1 to 2x3
II: Building with Metal3 to 4x5
III: Machining Metal5 to 6x8
IV: Ore to Sheets7 to 8x12
V: Technological Fundamentals of Metal Fabrication9 to 10x16
04Part

What you can build

BuildWeldingMagazine?Torch / rod uses
Metal sheet barricade3No1 / 1
Metal bar barricade3No3 / 3
Metal wall frame2Yes1 / 2
Metal wall level 13Yes4 / 4
Metal wall level 25Yes4 / 4
Metal crate level 13Yes4 / 4
Metal stairs5Yes4 / 4

The two wall levels reportedly have 700 and 800 health (one source). Big lockers sit at the top of the tree. Scrap-metal armour is listed at Welding 7 to 8 by one guide and at Welding 5 with Tailoring 1 by another, so check your menu. Welding repairs on car panels also need Mechanics 2 (one source).

Materials: steel sheets, iron pipes, iron bars, steel rods, scrap metal, hinges and wire, mostly from wrecks and metal furniture. See base building for how metal walls compare with wood.

Opinion A level 3 welder with a stack of steel sheets turns any house into a fortress in an afternoon. It is the best defensive skill in the game.

05Part

Quick answers

Where did Metalworking go in Build 42?

It is now called Welding. Forge and anvil work became the separate Blacksmithing skill.

Where is the propane torch in Build 42?

It is now called the Welding Torch. Refill it by combining it with a propane tank.

Do I need a welding mask?

Yes. Torch work requires the Welder Mask, but it is not used up.

How do I level Welding from 0?

Read Welding Vol. I, then wear the mask and dismantle burnt or smashed car wrecks.

Why can't I build metal walls?

You need Welding 3 and a Welder Monthly magazine, or the Welder occupation.

Does scrapping furniture give Welding XP?

Not by default. It is controlled by a sandbox option.

Are Welding and Blacksmithing the same?

No. Welding uses a torch; Blacksmithing uses a forge and anvil.

Welding figures come from PinDrop, Supercraft, BisectHosting (42.20) and pzfans.com (42.19 to 42.20.4). PZwiki's Build 42 welding pages could not be checked. Sources: PinDrop: Welding · Supercraft: welding guide · BisectHosting: welding (B42) · pzfans: propane refills · projectzomboid.wiki: Welding. Your game is the final word: if it disagrees with us, tell us and we will fix the page.