Cluster 4 · Product-Specific Guide · Fixtures
Product-specific acrylic advice starts from the object, not from the polymer. A five-sided box, a brochure lip, a magnet-lid gift case, and a solid plinth can all be “clear acrylic” and still need different sheet routes, thicknesses, joints, and hardware. This guide maps the fixture types most often specified in retail, beauty, hospitality, and exhibitions — and states where a type-level rule stops being enough.
How to read a product spec
Working rule. A product type tells you which failure mode to design against. The polymer is still PMMA. Material selection and process routes are covered in What is acrylic?, How to choose acrylic, and How acrylic is made. This page does not repeat those primers.
Write the drawing in this order: product type → overall size and load → sheet route and thickness → joint and edge → hardware → print → destination rules (cosmetic splash, food contact, outdoor). Skipping to “custom acrylic display” leaves every one of those choices to the quoting desk.
Display stands and risers
A stand’s job is to hold a product at a set height and angle without competing with it. The usual construction is cut-and-joined sheet, sometimes with a heat-bent easel back.
- Stock: Cast sheet when pockets, polished edges, or multi-tier joints are visible. Extruded sheet for simple L-risers and hidden backs.
- Thickness band: Small counter risers often start around 3–5 mm. Wider decks and heavier bottles move toward 5–8 mm or a rib under the deck.
- Watch-outs: Undersized screw holes in the deck, sharp inside corners in a CNC pocket, and a top-heavy product on a narrow footprint.
Angle matters as much as thickness. A 10–15° easel that looks right in CAD can hide a label; a vertical pocket that looks “premium” can make a bottle unstable. Build the first article around the actual SKU, not around a stock photo.
Category examples: custom display stands.
Boxes, cases, and vitrines
Short answer. Spec cast sheet for clear five-sided cubes and lid boxes whose edges will be seen. Size the lid and the walls for span, not for a catalog millimeter. Treat magnets, hinges, and locks as structural details.
Common subtypes:
- Five-sided cube — no lid, product lifts out. Optics and corner joints dominate.
- Lid box — lift-off, hinged, or sliding. The lid is a span problem.
- Magnet lid — neat close, local dish if the sheet is thin and the magnet is large.
- Vitrine / counter case — larger faces, sometimes a base in wood or stone. Expansion and cleaning access matter.
Walls in the 3–5 mm band are common on small gift and sample boxes. Larger clear cases often need 5–8 mm faces or a framed edge. A polished corner does not stiffen a wide lid.
If the box ships assembled, specify how corners are protected. Most transit marks are film scuffs and corner hits, not “weak acrylic.”
Category examples: custom acrylic boxes.
Trays
Trays are loaded in the plane of the sheet and carried. That combination is different from a static riser.
- Stock: Cast for visible polished rims and wet hospitality service. Extruded can work for lined or short-run utility trays.
- Thickness band: Small vanity trays often start around 4–6 mm. Serving trays that carry glassware usually need more stiffness, a turned-up rim, or both.
- Geometry: A formed or joined rim beats a perfectly flat plate. Sharp external corners chip in service; a small radius is a durability choice, not a style afterthought.
- Wet use: Condensation and spilled drink sit in joints. Design drain or a removable liner if the tray is not a sealed showpiece.
Category examples: custom acrylic trays.
Organizers and cosmetics fixtures
Organizers combine pockets, dividers, and repeated handling. Beauty testers add alcohol and oily residue. The type-level rule is: cast, polished, cleanable geometry — then test the actual formula on a coupon. That chemical caveat is explained in the selection guide; it is not optional here just because the part is “an organizer.”
- Removable inserts beat sealed wells that trap toner.
- Divider height should stop bottles from kissing; it does not need to hide them.
- Print and engraving belong on faces that are not wiped with solvent daily.
Jewelry and perfume stands
These parts are photographed at close range. Flow lines, glue blush, and a dull saw edge read as quality failures even when the stand is structurally fine.
- Prefer cast sheet or milled block for pads, ring slots, and perfume wells.
- Keep solvent joints off the camera axis when you can; put structure in a base.
- Soft lining (velvet, EVA, PU) is a second material spec. Adhesive used to hold it must not haze the acrylic later.
- Lockable perfume testers are hardware problems first, sheet problems second.
Brochure and sign holders
This is the highest-volume, most standardized family. Many units are heat-bent extruded sheet. That is appropriate when the face is a single bend and the print sits in a pocket.
Bent pocket holders
Extruded sheet, strip heat bend, polish the front sight-line. Thickness often in the 2–4 mm band for single A5/A4 pockets. Multi-pocket units need a back spine or they splay.
Framed sign / menu holders
Two plates and standoffs, or a U-bend. Specify whether literature is inserted from the top or the side. Side-load needs more stiffness at the open edge.
Outdoor menu boxes are not indoor holders with a thicker sheet. They need a UV-stable grade and a fastening method that allows movement.
Pedestals, plinths, and blocks
A plinth is a compression and scuff problem. Hollow sheet boxes that look like solid blocks are lighter and cheaper; they also drum and show joints. Solid cast block machines cleanly and photographs as mass. Neither is “stronger acrylic.” They are different constructions.
- Hollow plinth: sheet box, internal ribs on wide faces, optional weighted base.
- Solid block: milled or laminated plate, polished faces, no false bottom.
- Load: sculpture and ceramics need a stated point load and a non-slip pad. Do not infer capacity from height.
LED and illuminated parts
Clear and opal PMMA are common light-guide and diffuser materials. An “LED display” is sheet plus a light engine plus, often, a power supply that produces heat.
- Edge-lit guides want polished or properly machined launch edges and a grade intended for lighting. General display offcuts can show dirt and hot spots.
- Keep drivers off the acrylic face. Local heat is a warping and yellowing risk even when the room feels cool.
- Diffusion sheets and clear sheets are different SKUs. Mixing them on a drawing as “white acrylic” produces opaque lids when you wanted a glow.
Mirror acrylic is usually a coated sheet. Specify the coating side, the scratch expectation, and whether the part can be polished at all.
Type-by-type matrix
| Type | Usual stock | Starting thickness band | Primary failure to design against |
|---|---|---|---|
| Counter riser / stand | Cast if pockets/edges show | About 3–8 mm | Tip-over, cracked pocket, dull edge |
| Clear box / case | Cast | About 3–8 mm by span | Lid dish, joint blush, corner hit |
| Tray | Cast for hospitality | About 4–8 mm + rim | Flex in carry, chipped corner, wet joint |
| Cosmetics organizer | Cast, virgin | About 4–8 mm | Crazing from formula and cleaners |
| Jewelry / perfume | Cast sheet or block | By well depth and photo distance | Visible glue, lining adhesive haze |
| Brochure / sign holder | Often extruded | About 2–4 mm bent; thicker if framed | Splay, fatigue at the bend |
| Plinth / block | Sheet box or cast block | Construction-dependent | Scuff, drum, unstated point load |
| LED fixture | Lighting-capable clear/opal | By guide design | Heat at the driver, hot spots, wrong diffuser |
Commercial MOQ and sampling for factory-built versions of these types: custom acrylic FAQ.
FAQ
Is a display stand the same spec as a box?
No. Stands are usually open structures with pockets or decks. Boxes are closed spans with joints on all visible corners. The sheet may be the same grade; the thickness and joint design should not be copied blindly.
When is a hollow plinth acceptable instead of solid block?
When mass is not part of the brief, the faces are modest in width, and you can hide or accept joints. Specify internal ribs and a weighted base if the object on top is tall.
Can one thickness cover a whole fixture family?
Rarely. A 3 mm pocket riser and a 3 mm wide lid are not the same part. Match thickness to the spanning member, then keep mating parts in the same mill route so they fit.
Do magnet lids need thicker sheet?
They need local stiffness. A large magnet on a thin lid dishes. Options are a thicker lid, a smaller magnet set, or a frame in the lid.
Is frosted acrylic a different product type?
No. Frost is a surface or a tinted/translucent grade applied to the same product types. It hides fittings and fingerprints; it also hides dirt inside a joint.
What belongs on the drawing besides overall size?
Product type, SKU envelope, sheet route, thickness of each member, joint method, edge finish, hardware, print, and any contact chemistry or outdoor exposure.
Sources
Product geometry is not standardized the way sheet is. The references below support the material and process claims this page relies on.
- ISO 7823-1:2003, Plastics — Poly(methyl methacrylate) sheets — Part 1: Cast sheets. iso.org
- ISO 7823-2:2003, Plastics — Poly(methyl methacrylate) sheets — Part 2: Extruded sheets. iso.org
- 21 CFR 177.1010, Acrylic and modified acrylic plastics, semirigid and rigid. ecfr.gov
- Commission Regulation (EU) No 10/2011 on plastic food-contact materials. eur-lex.europa.eu
- “Poly(methyl methacrylate).” Wikipedia. en.wikipedia.org
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