DIY Power Scraper

I converted a Sawzall style reciprocating saw into a power scraper for machine metal scraping. Here is a parts diagram for this saw: https://www.jackssmallengines.com/jac... For comparison, here is Dewalt DW983 that DOES NOT have needed Scotch Yoke (part #40 seems to be the curvature part): https://www.ereplacementparts.com/dew... Here are other excellent DIY power scrapers videos: From Ca' Lem:    • DIY - CHEAP power scraper   From ThunderDog:    • DIY Metal Scraper for machine tools // Pow...   Here is an animation of wobble mechanism used in Biax Scrapers:    • Scraping machine   Here are photos of inside of Biax scraper: https://www.usinages.com/threads/biax... Biax breakdown video:    • Biax Scraper   Parts schematic for Biax scraper: https://www.practicalmachinist.com/vb...