With 1/2-inch sheet, I’d look for a plastics fabricator who does thermoforming rather than just cutting acrylic. If the curve is a single gentle bend, a shop with a large enough controlled oven and a former can usually heat-form it; a compound curve is a different job. Take the old panel or a full-size template, note the curve, and ask whether they can form 12.7 mm cast acrylic without leaving stress or optical distortion. I’d avoid cold-bending it, as thick acrylic can crack later around the fixings.