The Two-Tray Rule: Resin Sanding in a Flatshare Without Dusting the Kitchen

Resin dust is the unglamorous side of miniature making. The parts look lovely on the sprue, but the moment you start fettling mould lines and filling gaps, you create a fine powder that you really do not want settled on the kettle, the bath mat or your flatmate's toast. In a house with a garage and an extractor fan, this is a workshop problem. In a flatshare, it is a shared-space problem. The good news is that you do not need a full spray booth to deal with it. You need water, two plastic trays and a routine you actually follow.

Why wet sanding changes the job

Resin dust is not the same as sawdust. It is fine, it travels, and it is not something you should be breathing in day after day. Wet sanding does not make the risk vanish, but it stops the dust becoming airborne in the first place. The abrasive and the resin particles stay trapped in a slurry rather than floating around your spare room. That is the whole trick. Keep the part wet, keep the paper wet, and never let the grey sludge dry out and turn back into dust.

This is also why the old advice of just sanding over a bin is not good enough in a shared flat. You want containment, not optimism.

The kit that lives under the bed

You do not need much, and none of it has to be fancy. A pair of plastic boot trays from a garden centre, or cat litter trays from a pet shop, make excellent shallow work trays. Put one inside the other and you have a splash zone and a back-up. Add a silicone baking mat or a cheap splash mat for the floor or bath edge. A small spray bottle from the cleaning aisle keeps things damp without flooding the place.

For PPE, get an FFP3 mask that fits properly, nitrile gloves, and eye protection. If you wear glasses, get goggles that fit over them. An old apron or a cheap waterproof apron saves your clothes. For clean-up, keep a roll of kitchen paper, a couple of microfibre cloths that are only for hobby use, and a lidded plastic tub for the messy stuff. Zip bags and a second heavy-duty bag are for waste. A washing-up bowl is useful for rinsing, but label it clearly so it never returns to the kitchen.

You can source most of this from Home Bargains, Screwfix, Argos or a decent household shop. The point is not to buy a laboratory. The point is to have a dedicated, closable system.

Set up in ten minutes

Work in the bathroom rather than the kitchen. It has a hard floor, a door, and a sink, and it is not where people prepare food. Put the splash mat down, set the tray on top, and fill the tray with just enough water to cover the bottom. Not a swimming pool. A shallow puddle is plenty. Wear your mask and gloves before you open the resin parts, not after you have started making dust.

Keep a damp sheet of kitchen paper to hand for wiping tools. Have your waste bag open and ready. Close the bathroom door. If there is a gap under the door, a rolled towel helps, but it is not a substitute for keeping the work wet and contained. Tell the people you live with what you are doing. Not in a dramatic way, just clearly: resin sanding, wet method, bathroom, twenty minutes, I will clean up.

The sanding routine itself

Work in small batches. Dip the part and the wet-and-dry paper often. Use a shallow plastic tub of water beside the tray so you are not constantly running the tap. Keep the paper wet enough that the slurry stays liquid. Use gentle pressure and let the abrasive do the work. If you hear dry scratching, stop and add water.

Rinse the part over the tray, not directly over the sink. Wipe it with damp kitchen paper, then pat it dry with a clean piece. Inspect it under a good light. If you need to go back to a lower grit, do it in the same wet tray. Do not wander over to the sofa with a part and a dry sanding stick. That is how dust gets into shared spaces.

Water and waste: never down the drain

This is the bit people rush. Do not pour resin slurry down the sink. Let the solids settle in the tray, then absorb the sludge with kitchen paper rather than tipping it away. Wring the paper into your waste bag, not the basin. Wipe the tray out with damp paper, then give it a proper wash in the bathroom sink only after the solids are bagged. Keep the hobby cloths separate from the household laundry.

Double-bag the waste and seal it. Check your local council's guidance for resin and cured resin waste, because rules differ across the UK. Many households can put small amounts of cured resin in general waste, but uncured liquid resin and dusty slurry need more care. If you are unsure, ring the council or use a local household waste site. Do not put loose resin dust in the shared kitchen bin.

The five-minute reset

Before you leave the bathroom, wipe the tray, the mat, the tap handles and the floor with damp paper. Put the used paper in the waste bag. Rinse your gloves before you take them off. Wash your hands properly. Store the tray and tools in the lidded tub, not loose on a shelf. Take the waste bag straight out to the bin store if bin day is close. If it is not, keep it sealed and out of the way.

A quick damp wipe is not fussing. It is the difference between a hobby and a household argument.

Landlord-friendly checklist

• Keep the operation small, wet and closable.
• Use a dedicated lidded box for trays, PPE and cloths.
• Work in the bathroom, not the kitchen or a shared bedroom.
• Never dry sand resin indoors.
• Never pour slurry down a drain.
• Double-bag waste and follow council advice.
• Do not use the household vacuum on resin dust unless it is rated for fine dust and you know what you are doing. A damp wipe is safer.
• Tell flatmates what you are doing and when.
• Leave the room cleaner than you found it.

Resin work in a flatshare is not about having the perfect studio. It is about being boringly consistent. Wet paper, two trays, a mask that fits, and a bin bag that gets sealed. Do that and the dust stays where it belongs: in the tray, not in the air.