Metal Stitching Service Provide for cast iron crack repair, engine block restoration, turbine casing, and heavy machinery repair. We use a cold metal locking process that produces no heat, no distortion, and guarantees a high level of performance. 40+ years of experience offering on-site and global repair solutions. For more details, please email us at [email protected] ... https://rapowersolutions.com/BlogDetails.aspx?blogname=metal-stitching-and-metal-locking-crack-cast-iron