Switch it off and unplug it, wet the surface before anything touches it, and keep every household cleaner away from the panels. An infinity mirror case is a coated optical surface with electronics behind it - the two things ordinary glass cleaner is worst for.
Why this case is not like a plain box
- The front is a beam splitter, not glass. Its partial reflectivity is a surface property, so scrubbing changes the optics, not just the look.
- The depth effect exaggerates dirt. Light bounces repeatedly before it reaches you, so a smear on the front panel is re-photographed at every bounce and the tunnel turns milky.
- There are LEDs and wiring inside. Liquid sprayed at the case, rather than onto a cloth, travels along seams.
- It is acrylic. Softer than glass, and chemically fussy.
What conservation guidance says about acrylic
The Canadian Conservation Institute's note on cleaning glass and acrylic display cases is blunt about it: many household cleaners contain abrasives that scratch acrylic sheet, and some contain solvents that cause crazing - a network of fine surface cracks. It also points out that acrylic generates static electricity during cleaning and use, which attracts dust, which is why purpose-made acrylic cleaners are formulated to reduce static rather than just to clean.
That is the whole argument for doing this gently, from a source with no product to sell: the damage from cleaning is usually worse than the dirt. Crazing cannot be polished out - removing scratches from acrylic covers the difference.
The method
- Power off and unplug, and let it cool if it has been lit.
- Take the car out. Cleaning around it is how mirrors and aerials break.
- Blow or lift the dust off first. Dragging a cloth across dry dust is what causes the fine scratches that later read as haze.
- Wet the surface, do not dry-wipe. Lukewarm water with a drop of mild dish soap, or a cleaner made for acrylic. Apply to the cloth, never spray the case.
- Clean microfibre only, straight passes, no pressure. Not paper towel - wood fibre is harder than acrylic.
- Dry with a second clean cloth, also in straight passes.
- Leave the mirrored face alone beyond that gentle pass. No polish, no compound, no alcohol wipes.
Never use
| Product | What it does |
|---|---|
| Ammonia-based glass cleaner | Hazes and crazes acrylic - permanent |
| Alcohol or acetone wipes | Crazing, and can attack coatings |
| Paper towel or tissue | Scratches the surface |
| Abrasive creams or polishes | Removes the coating you are trying to protect |
| Compressed air held close | Can drive grit across the panel; propellant can spot the surface |
If the tunnel looks dull rather than dirty
- Check the inside face. Dust settles inside a case that is opened regularly, and the effect is amplified by the bouncing light.
- Check for haze rather than dirt. Fine cleaning scratches scatter light and grey out the far end of the tunnel. That is polishing territory, not cleaning.
- Check the light itself. A dim or colour-shifted source makes the whole chamber look tired - CRI and Kelvin.
- Check the room. Reflections of a bright window or lamp read as a milky overlay. Moving the lamp does more than cleaning - stopping glare and reflections.
How often
Less often than you would think, if the case is closed. A sealed case keeps dust off the car, which is most of the reason to have one - so the outside front panel is the only surface that needs regular attention. Fingerprints are the real enemy; they are acidic enough to mark over time and they show up badly in a lit chamber.
For our own case, that is the whole maintenance routine; specifications are on the specs page, and the optics behind the effect are in how an infinity mirror works.
Source
Canadian Conservation Institute, Cleaning Glass and Acrylic Display Cases, CCI Notes 1/2, Government of Canada - for the abrasives, crazing and static points above.
FAQ
How do you clean an infinity mirror display case?
Unplug it, remove the car, lift the dust off before touching the surface, then wipe with a clean microfibre dampened with water and a little mild dish soap. Apply liquid to the cloth, never spray the case, and dry with a second cloth.
Can I use glass cleaner on an infinity mirror?
No. Ammonia-based cleaners haze and craze acrylic, and alcohol or acetone can attack coatings. Conservation guidance warns that household cleaners often contain abrasives that scratch acrylic as well.
Why does my infinity mirror look cloudy?
Usually fine cleaning scratches scattering light, dust on the inside face, or a room reflection overlaying the front. Cloudiness that does not wipe off is haze, which needs polishing rather than cleaning.
Should I clean the inside of the case?
Only when it needs it. A closed case keeps dust out, so the outer front panel is the surface that collects fingerprints and needs attention most.
Does static make it dusty?
Yes - acrylic builds a static charge during cleaning and use, which pulls dust to it. Cleaning it wet rather than dry reduces that, which is why acrylic-specific cleaners are formulated as antistatic.