In-House Oil Burner Cushion Fabrication ACES has over 15 years of fabricating oil burner test cushions (burn blocks). Combined with our three in-house oil burner labs and on-staff DERs, ACES is your one-stop-shop for seat cushion flammability certification. Our sewing area is located within our conditioning room, allowing us to fabricate cushions while they are being conditioned, thereby reducing turnaround times for your project. Request Information