Can a Weapons Consolidated Tool Kit cavity be built by adding up the tool list?

Answer: Not directly. Allow 2 to 3 mm a side plus finger room, then recheck against the longest item.

The drawing says 4 mm wall and the sample reads 3.2 mm. Pass?

Answer: By zone: side minimum 3.2 mm, exactly on the line; corner minimum 2.9 mm.

Who sets the tier count?

Answer: Clear height, then the load calculation. Above 126 kg add racking, not a tier.

Why are rotomoulded tolerances looser than injection moulded ones?

Answer: Powder melts without pressure, so shrinkage follows wall and mould temperature at 2.5 percent; injection holds size better at higher cost.

Sheet or drawing, which wins?

Answer: The sheet, which carries measurable values and tolerances. Correct the drawing at the next revision.

Weapons Consolidated Tool Kit Sizing: Wall Thickness and Load

Quick answer: Size a Weapons Consolidated Tool Kit inside out: cavity from the longest item plus clearance, envelope from the cavity plus two wall sections, stack load from gross weight and tier count. Move one figure and the other two are recalculated.

Where the Weapons Consolidated Tool Kit Dimension Chain Starts
Splitting Wall Thickness Across Base, Side and Lid
Back-Calculating Load and Stack Height
Tolerance Bands and the Gauges That Hold Them
Writing the Specification as a Working Sheet
FAQ

1. Where the Weapons Consolidated Tool Kit Dimension Chain Starts

A Weapons Consolidated Tool Kit runs on a four-link chain: cavity, wall section, envelope, stacking footprint. The tool list is the input and the body the variable, so the chain starts at the cavity, where a 560 mm longest item and a 205 mm tallest item, plus clearance, set the floor.

That gives a 592 × 392 × 230 mm cavity; a 4.0 mm side and 5.0 mm base make a 600 × 400 × 240 mm envelope, the 2 × 2 module of a 1200 × 1000 mm pallet, so four cases sit per layer and twelve per three tiers.

Every link keeps its own tolerance band; adding the four together gives a figure no gauge can police.

2. Splitting Wall Thickness Across Base, Side and Lid

Rotomoulding has no moulded-in thickness; powder charge and thermal field decide it. Targets are 5.0 mm base, 4.0 mm side, 4.5 mm lid and 3.6 mm corners, because the base takes abrasion, the lid stack load and the side bulging.

Weapons Consolidated Tool Kit: dark grey rotomolded case upright on pale grey, raised folding handle, four vertical side ribs, one front latch, parting line visible

A 600 × 400 × 240 mm case develops 0.96 m²; at 4 mm and 0.94 g/cm³ that is 3.6 kg of powder, charged at 3.8 kg.

Corner thinning runs 15 to 20 percent below the flat wall, so the drawing reads minimum, not nominal. Nine ultrasonic points per case; under 80 percent of the zone target means another powder pass.

3. Back-Calculating Load and Stack Height

Three loads get confused: gross weight, stack load, drop impact. The sum starts with tier count, which clear height and forklift lift decide.

At 28 kg gross and three tiers the bottom case carries 56 kg; a 1.5 factor gives an 84 kg test at 23 °C, lid deflection capped at 3 mm. Four tiers reach 126 kg.

Tiers	Load on bottom case	Test load	Allowed deflection
2	28 kg	42 kg	2 mm
3	56 kg	84 kg	3 mm
4	84 kg	126 kg	4 mm

Ribs 8 mm high at 120 mm pitch spread load into the side walls; sparse ribs let the lid dish and open the gasket.

Each handle is rated 42 kg; a one-sided lift feeds the hinge torque, so the sheet forbids it.

4. Tolerance Bands and the Gauges That Hold Them

Bands are separate: ±1.0 mm on pockets, ±2.0 mm on the envelope, 1.5 mm flatness. Shrinkage of 2.5 percent is compensated into the mould and checked on a template.

Weapons Consolidated Tool Kit: red rotomolded case tilted mid-air over a dark reflective floor, raised corner bumpers, two latches and a folding handle

A 3 m tape covers the envelope, a caliper the pockets, an ultrasonic gauge the walls, and a surface plate the lid flatness.

Deep pockets take go/no-go gauges at nominal ±1 mm. Parts condition at 23 ± 2 °C for 24 hours, since a sunlit case reads 1.5 mm large.

5. Writing the Specification as a Working Sheet

A specification for a Weapons Consolidated Tool Kit should be a sheet, not a paragraph: envelope, cavity, wall zones, gross weight, tier count, latch and marking positions.

Item	Write it as	Common error
Cavity	592 × 392 × 230 mm, ±1.0	envelope only
Wall	base 5.0, side 4.0, lid 4.5, minimum	average 4 mm
Gross weight	28 kg with body and liner	net payload only
Stacking	three tiers, 56 kg on the bottom	stackable, no figure

Change control bites harder than design. One extra tool lengthens the cavity 30 mm, the envelope becomes 630 mm, and a pallet layer drops to three.

An 80 × 50 mm label recess of 0.5 mm, clear of ribs and latches, keeps a barcode scannable.

Conclusion

A usable specification is numbers that hold each other: cavity from the tool list, envelope from the cavity, load from the tier count, tolerance from what the gauges can check. Written in that order, a Weapons Consolidated Tool Kit holds size, wall thickness and load without contradiction.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.