Lens Assy This item was sourced on www.MFG.com as one of the items in an RFQ in USA for Polishing Material is .125 Methacrylate L-P-391 Clear plastic. Approx. 8" x 9" . **Surface is extremely critical** No scratches or nicks allowed. Buyer to provide material and shipping cost. Polish only, per enclosed Parts list and Eng dwg. Remove scratches and imperfections on inside and outside of lens. Part Part Number: 2613437-11 Material: Thermoplastic Material Grade: L-P-391 Technical Specifications Category:Polishing Dimensions228.6 x 203.2 x 3.175 inch Tolerance:0.127Annual Usage:2.0 The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services for the machine tool industry, automotive industry… For more information visit www.MFG.com. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Polishing: Polishing and buffing processes are surface treatments performed to smooth a variety of materials. Polishing may be done for functional purposes on parts like shafts, cylinders or lenses. Polishing is also done for aesthetic purposes, for example, to achieve hi-gloss, satin or brushed finishes on materials. Polishing and buffing require the use of a buffing pad and a compound, usually containing a very fine, silica-based abrasive. Polishing is done manually, with power tools, or with fixed machines.