How To Repair Catalyzed Lacquer
If you love lacquer but wish it was more than durable, take a await at pre-catalyzed (pre-cat) lacquer. It retains the best qualities of traditional lacquer but provides a harder surface that improve resists abrasion, thank you to a goad (retrieve of ii-function epoxy) that initiates a chemical reaction as the finish dries. Lacquer thinner remains the vehicle for pre-cat, simply the resins vary from traditional lacquer formulations.
"Pre-catalyzed" means the manufacturer or dealer adds the hardening agent earlier you lot receive the product, photo above, you would mix postal service-catalyzed material in your store.
The lowdown on lacquer
Lacquer, consisting of diverse resins dissolved in lacquer thinner, has proven a versatile cease for nearly a century. Pro finishers and furniture manufacturers love lacquer because information technology sprays on smoothly and evenly without sagging or running, builds fast, and dries quickly. It can be clear or pigmented, and its hard, flexible surface polishes to a high shine.
And it's forgiving: To repair damage, just spray on more lacquer. The new glaze partially dissolves the existing moving-picture show and blends into it.
The unique nature of lacquer thinner—it'south a alloy of several solvents that evaporate at different rates—accounts for those winning properties. The thinner starts to evaporate as presently as the spray leaves the nozzle. By the time the finish hits the wood, it has already started to dry. This quick drying makes lacquer challenging to apply with a brush—for brush awarding, purchase a specific "brushing lacquer" formulation.
When to apply pre-true cat lacquer
Versatile and durable pre-true cat lacquer makes a great finish for indoor furniture and cabinetry. Remember of information technology mainly as a big-project stop (see A question of quantity, shown beneath). Once dry, pre-cat lacquer rates rubber for food contact and resists damage from most nutrient items, h2o, and booze. Only, it isn't as impervious to damage equally polyurethane. Lacquer imparts a rich glow, and the finish feels nice to the touch.
Applying pre-cat lacquer
Lacquer works best as a spray stop, applied to dry forest finish-sanded to at least 220 grit. High-volume, low-pressure (HVLP) spray equipment proves best for application because information technology profoundly reduces bounce-back and overspray compared with conventional high-pressure spray guns. Nonetheless, y'all should wear rubber goggles and a respirator suitable for organic vapors when spraying pre-cat lacquer.
Provide acceptable ventilation, photo below. On a nice day, spray outside in your driveway or on the patio; the lacquer dries quickly enough that bugs and grit won't mar the finish.
Avoid animate lacquer mistor getting it in your eyes. Ventilatethe finishing expanse and continue the airmoving to prevent vapor concentration.
Spray light coats to build the cease. Polish, slightly wet coats reduce the need for between-coats sanding. If you do sand, let the stop dry an 60 minutes or and so. (Follow the manufacturer'due south recommendations.) Wear a particulate mask when sanding.
Source: https://www.woodmagazine.com/woodworking-tips/techniques/finishing/lacquer
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