Old school woodworking meets old school metalworking...
Here I take a £20 Stanley No.5 Jackplane that I bought at a car boot sale, and hand scrape it to be flat to within about 2 ten thousandths of an inch (0.0002").
Wood planes are cheap to buy second hand, so if you are a metalworker that wants a cheap source of cast iron to practice scraping on a wood plane is a cost effective way of practicing. What's more at the end of it you will have a highly capable hand woodworking tool that you can use yourself or sell to a woodworker.
In this video I am not advocating that you *need* to scrape a plane to less than 0.001" of flatness, or that this is a better way of flattening a plane than the traditional method of lapping on a flat surface with abrasive paper. For me this is the perfect way to practice the art of hand scraping whilst ending up with a perfectly flat plane that looks amazing.
Want to see it taking some shavings? See here - https://youtu.be/YvInfTSzjSU
Handy Links
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Carbide Hand Scrapers - https://ebay.us/uKTQmc
Carbide Scraper Inserts - https://ebay.us/FZUxmO
Engineers Blue - https://amzn.to/3XoBMSM
Rubber Roller - https://ebay.us/RMBsyo
Surface Plate - https://ebay.us/2yrNIh
Slip Stone - https://amzn.to/4d8aJB8