A stand that fits in a van

Trade show booths are usually designed twice: once for the show floor, and once for the truck that gets them there. Most of the time nobody designs for the truck at all, so the client ends up paying for a dedicated transport lorry, a rigging crew, and two days of setup. I had a client who wanted none of that. Their brief was simple: the whole booth must fit in a standard van, two people must assemble it in under three hours, and it must look like it cost more than it did.

That is the kind of puzzle I like. It is also the kind of project where exhibition stand design CAD files for fabrication matter more than renderings. A pretty booth is easy. A pretty booth that packs flat, locks together without screws, and survives four shows is hard.

Start with the box

I started by modeling the transport volume first, not the booth. The client had a Ford Transit L3H2. The internal cargo box is roughly 3,533mm long, 1,784mm wide and 1,886mm high, with about 1,392mm between the wheel arches. I drew a working envelope of 3,400mm × 1,765mm × 1,870mm inside that space to leave room for straps, padding and bad packing decisions. Then I designed the booth to live inside that envelope.

Everything became a flat panel or a compact extrusion. No volume bigger than a person could carry. No part longer than 2,400mm because that is a common sheet material size. Every connection became a slot, a wedge, or a cam lock.

The frame was built from 18mm plywood fins with interlocking half-lap joints. The panels were 6mm plywood skins with printed vinyl applied afterward. The counters and shelving were CNC-cut from the same 18mm sheet as the fins, nested together so we wasted almost no material.

Because the whole thing came from a single material thickness, the shop could batch-cut everything on one machine setup. That saved money and reduced the chance of a setup error.

No-tool assembly

The client specifically said “no tools on site.” That ruled out screws, bolts, and Allen keys. I designed the joints as friction-fit locking tabs.

Each vertical fin had a series of rectangular slots. Each horizontal shelf had matching tabs. Push together, and the tab flexed past a small detent that held it captive. Disassemble by lifting the shelf slightly and sliding it back out. It sounds fragile until you realize the detent was 3mm deep in 18mm plywood and the load direction was vertical, which only tightened the joint.

I prototyped one joint in the workshop first. I cut two small pieces, pushed them together, pulled them apart, pushed them together fifty times. Then I measured the wear. The fit loosened by about 0.1mm after repeated cycles. I increased the detent depth by 0.2mm and called it done.

The thing I forgot

On the CAD model, the graphics panels looked perfect. They clipped onto the front of the fins with small brackets. What I forgot was that printed vinyl has thickness. The client’s graphics supplier used 0.4mm vinyl with laminate on one face of each panel. That sounds like nothing, but the panel brackets were sized for a 6mm panel sliding into a 6.2mm slot. With the vinyl, the panel became 6.4mm. The slot was too tight.

We discovered this during the first dry assembly. The panel would not slide in without risking the print. I redesigned the brackets to have a 6.8mm slot and the shop cut a replacement set the same day. The fix took an hour. Missing it on site would have taken a day and damaged the graphics.

Now I add a “surface finish” variable to every panel thickness in exhibition work. Paint, vinyl, laminate, edge banding — they all eat clearance.

Designing for the breakdown

Transport is the hidden user of the design. I modeled every part with its packed orientation. The fins stacked flat. The shelves nested in alternating directions. The graphic panels slid into a dedicated plywood crate with padded separators. Even the crate was part of the cut list, built from offcuts of the same 18mm sheet.

I also numbered every part with a small engraved code on a hidden face. During assembly, you could follow the numbers like flat-pack furniture instructions, except these instructions actually worked because I had physically tested the order. Some panels had to go in before others. The numbering prevented the classic “why won’t this tab fit?” moment that happens when you install panel 7 before panel 3.

The show floor test

The booth went to a lighting trade show in Frankfurt. Two people assembled it in two hours and forty minutes, including graphics. It held up for three days of people leaning on it, setting drinks on it, and bumping into corners. Breakdown took ninety minutes. Everything fit back in the van, crate and all.

The client said the best compliment they received was from a neighboring exhibitor who asked how big the install crew was. The answer was two, and one of them was mostly carrying panels.

What I’d change next time

I would add small captive magnets to keep the graphic panels aligned during assembly. The friction fit worked, but a couple of panels shifted while the team was slotting in neighboring parts. A couple of 10mm neodymium magnets in counterbored pockets would lock panels in place until the next part went in. Small detail. Big time saver on site.

I’d also build a full-scale prototype of one bay instead of just the joints. The overall structure was fine, but seeing one complete bay would have caught the vinyl thickness issue earlier and let us refine the graphic alignment before cutting everything.

This is the kind of project where the CAD file and the physical object are in constant conversation. The CAD gets you close. The prototype gets you honest. The final file is the one that survived both.