A bottle of Tamiya Extra Thin tipped across a cutting mat can turn a productive evening into a rescue job very quickly. Knowing how to store Tamiya cement is less about creating a laboratory and more about keeping a volatile, easy-to-knock bottle secure, upright and ready when a joint needs closing.
For most scale modellers, cement lives within arm’s reach of the build. That makes sense until the bench gets busy with sprues, sanding sticks, paint jars and a half-finished hull. The right storage approach protects the model, the work surface and the cement itself, while making the next assembly session smoother.
Store Tamiya cement upright, cool and out of light
Tamiya cement is a solvent-based plastic cement, so its first requirement is simple: keep the bottle upright with the cap fully closed. Storing it on its side risks solvent reaching the cap seal and brush stem for long periods. That can encourage leakage, make the cap harder to remove and leave dried residue around the neck.
Choose a stable, level position away from direct sunlight, radiators, heat lamps and the warmest part of a hobby room. Heat increases vapour pressure inside the bottle and speeds evaporation each time it is opened. A cool cupboard or a shaded section of a permanent bench is usually ideal, provided it remains dry and is not accessible to children or pets.
Avoid window ledges. They seem convenient, but daily temperature swings and strong sunlight are not kind to solvent products. The same goes for storing cement next to a spray booth exhaust, where airflow can accelerate evaporation if a cap is not perfectly sealed.
If your modelling space is a shared dining table or a compact flat, return the bottle to a dedicated closed storage box after each session. Keep that box upright during transport and place it somewhere cool rather than in a loft, shed or garage that sees major seasonal temperature changes.
Give the bottle a purpose-built place on the bench
The main risk during active modelling is not long-term storage. It is the casual elbow, sleeve or sprue frame catching the square glass bottle. Tamiya’s familiar bottle shape gives a useful stable footprint, but it can still be knocked over when the bench becomes crowded.
A close-fitting cement holder is one of the most useful small upgrades for a working bench. It gives the bottle a defined home, reduces the chance of a sideways knock and stops it migrating into the middle of the cutting area. It also encourages a better habit: return the cement to its holder as soon as a seam is glued, rather than leaving it beside the model while you move on to dry-fitting the next part.
At The 3D Forge, modeller-designed cement and solution holders are made for exactly this kind of bench-side control, before the Forge Cat gives each tool its final quality inspection. The useful feature is not decoration. It is keeping the bottle upright in the same reachable spot every time, without sacrificing valuable work area.
Position the holder on the side of your dominant hand, but not directly beneath where your arm naturally rests. Right-handed builders often find the rear-right corner of the main work zone works well, with parts trays and instructions kept between the cement and the model. That creates a deliberate movement: pick up, apply, replace.
Keep the cap, brush and bottle neck clean
Good storage begins before the bottle goes away. After using the cement, draw the brush gently against the inside neck of the bottle to remove excess liquid. There is no need to scrape it dry, which can damage the brush, but reducing the loaded solvent helps prevent drips from running down the outside when the cap is replaced.
Screw the cap on squarely and snugly. Do not overtighten it. Forcing the cap can damage the threads or make the next opening unnecessarily difficult, especially if a little cement has dried around the neck.
If the bottle neck becomes sticky, clean the outside carefully with a small piece of kitchen roll or a cotton bud while the cap is off. Keep fibres away from the opening. Never leave the open bottle unattended while you search for something to clean it with - place the cap back on first, then deal with residue at the next convenient moment.
A stiff cap is usually a sign that solvent has dried on the threads. Wiping the neck after a messy session is much easier than trying to free a sealed-on cap before a delicate assembly job. It also keeps the brush handle clean, which matters when you are applying cement along fine seams on aircraft fuselages, rail vehicles or ship superstructures.
Separate cement from paints, food and ignition sources
A well-organised bench does more than look tidy. It reduces accidents. Store Tamiya cement separately from drinks, snacks and anything that could be mistaken for a hobby container. This sounds obvious, but long sessions often involve a mug of tea squeezed between paint racks and tools. Give refreshments their own side of the room where possible.
Keep solvent cement away from naked flames, cigarettes, candles, soldering irons and other potential ignition sources. Ensure the room has sensible ventilation while using it, particularly when working with several glued subassemblies in a short period. Storage is not a substitute for safe use: the bottle should stay closed whenever the brush is not actively applying cement.
It is also worth separating standard Tamiya Cement, Extra Thin Cement and other solutions into labelled positions. The bottles are recognisable once you know them, but reaching for the wrong product is easy when several clear liquids are grouped together. A holder with individual slots, or a marked storage tray, prevents the small pause of checking every label mid-build.
For a bench with several adhesives, use a simple order that matches your routine:
- plastic cement and extra-thin cement together, upright and within reach;
- CA glue in a separate spot, ideally with its own spill protection;
- fillers, putties and decal solutions grouped according to the stage of the build;
- paints stored away from the immediate glue application area.
How to store Tamiya cement between projects
If a project is paused for weeks or months, inspect the bottle before putting it away. Confirm the cap is secure, wipe away any residue and check that the bottle is still clearly labelled. Keep it upright in a tray, holder or small container that can contain a minor leak rather than directly on a timber shelf or inside a drawer full of instructions.
Do not decant Tamiya cement into an unlabelled jar or generic dispenser. The original bottle is designed for the product and provides the correct label, cap and applicator. Decanting introduces avoidable risks, including contamination, evaporation and confusion with another liquid on the bench.
A closed cupboard is useful for long-term storage, but avoid packing the bottle tightly among heavy tools. You want to be able to lift it out vertically without knocking surrounding items over. If you own several bottles, leave a little space between them or use separate slots so the glass does not clink together when the cupboard opens and closes.
Check older cement before relying on it for a visible seam. If it has thickened noticeably, shows contamination or the brush has become damaged, it may no longer flow as intended. Storage can extend the useful life of a bottle, but it cannot reverse evaporation or prevent every bit of workshop debris finding its way into an open container.
Small habits that prevent big spills
The safest cement storage system is the one you will actually use every session. A holder placed too far away becomes decoration. A cupboard that requires moving three paint boxes will encourage the bottle to stay out overnight. Build the routine around your real workspace, whether that is a dedicated modelling room or a folding tray on the kitchen table.
Before packing down, make a final pass across the bench: cap on, bottle upright, cement in its holder or storage box, and no solvent-soaked tissue left beside it. It takes less than a minute and protects the next session from a dried brush, a stuck cap or an unpleasant surprise on the cutting mat.
A secure place for the bottle may be a small detail, but it is one of those details that makes a modelling bench calmer. When the cement is stable, clean and exactly where your hand expects it to be, you can keep your attention where it belongs: on the next precise join.