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For EveryoneUpdated Oct 12, 20263 min read

Building LARP props & weapons

Step-by-step guides, with diagrams, for a boffer weapon, EVA foam armour and props — and why the safety table, not the guide, decides whether yours passes.

On this page
  1. Boffer weapon (core + foam)
  2. Foam armor (EVA)
  3. Props & accessories
  4. Safety first
  5. Before you take it to an event

Prop & Weapon Crafting in the LARP Realm collects starting points for building safe, good-looking gear. This article carries the same guides and diagrams as the page, so you can read them away from it.

The LARP prop and weapon crafting page, with a boffer weapon guide headed by a cutaway diagram of the core, caps, foam, tip and skin, above the foam armor guide.
Each guide has a diagram numbered to its steps.

Boffer weapon (core + foam)

Boffer weapon, cut awayA boffer from pommel to tip. 1, the core runs through the grip and stops about four inches short of the tip. 2, both core ends are capped. 3, soft open-cell foam pads the pommel and the thrusting tip. 4, closed-cell foam forms the blade. 5, a stretch-fabric or latex skin covers it. 6, the finished weapon flexes.Pommel padBlade foamFlex testThrusting tipCore, ~4in short of the tipSkinCap, both ends
  1. Core: fiberglass or (safer) a hollow kitespar / graphite rod, cut ~4in shorter than the finished weapon (it runs through the grip).
  2. Cap both ends of the core with a coin + strapping tape so it can't punch through the foam.
  3. Add a thrusting tip: a thick pad of open-cell (soft) foam past the capped core at the point; the pommel (handle end) gets its own padding.
  4. Blade: closed-cell foam (EVA/camp mat) or pipe insulation around the core, contact-cemented on.
  5. Cover with a stretch fabric or latex/DAP skin for durability + looks.
  6. Flex test: the finished weapon should flex, have no exposed/felt core, and pass your group's tip-throughput + pommel checks.

Foam armor (EVA)

Foam armor, step by stepSix panels: 1, a paper pattern traced onto foam; 2, a cut edge bevelled at an angle; 3, foam curved under a heat gun; 4, sealer brushed on; 5, primer, colour and top-coat layers; 6, a plate with an elastic strap and buckle.PatternCut & bevelHeat-formSealPaintStrap45°
  1. Pattern in paper/craft-felt first, fit to your body, then trace onto EVA foam floor mats.
  2. Cut with a sharp blade; bevel edges with a rotary tool or sandpaper for clean seams.
  3. Heat-form curves with a heat gun (low, even passes) and hold the shape until it cools.
  4. Seal the porous foam (Plasti-Dip, Mod Podge, or a PVA/glue wash) before painting.
  5. Prime + paint with flexible acrylics; finish with a matte or metallic top-coat and weathering.
  6. Strap with elastic + quick-release buckles so it's comfortable over a long event.

Props & accessories

Props and accessoriesFour props: 1, an aged scroll; 2, a sealed potion bottle; 3, a pouch with a hidden modern pocket; 4, a battery LED tea-light in place of a flame.ScrollPotionPouchLED light
  1. Grimoires/scrolls: age paper with tea/coffee, singe edges safely, bind in a cloth or leather cover.
  2. Potions: thrift-store bottles + colored water/resin; label in-world and seal so they don't leak in your pack.
  3. Pouches & belts: leather or faux-leather with rivets; keep a hidden modern pocket for phone/keys/meds.
  4. Lighting: warm LED tea-lights instead of open flame at wooded sites.

Safety first

  • No exposed hard cores — ever. If you can feel the core through the foam, it fails.
  • Build to your game’s published weapon standard, not a video’s.
  • Re-inspect after every event; foam compresses and tips wear through.

Before you take it to an event

Put your finished gear on the kit checklist so you don't arrive without it, and read the safety calls so you know how play stops if something goes wrong with it. General guidance only — your event's weapon-check and safety rules are the final word.

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