Machined steel rectangle?

ScarFoot said:
He literally describes how he made it in one of his videos. It’s been a few years since I watched it but I think it was a block of something like O1 that he surface ground flat and scraped a radius on the edges/corners with a cheap radius gauge. I don’t remember if he hardened it after that or not. If you don’t have access to a surface grinder, a piece of sandpaper on a surface plate and some elbow grease works just fine to flatten the block. If you don’t want to buy a radius gauge just drill an appropriate sized hole for the radius you want through a piece of metal and grind all but a quarter of the circumference of the hole away and harden it.
He just wrapped Duragold self adhesive sandpaper over the radiused edge and cleaned his plunges with it.

There’s a thousand different ways to clean up plunges. That’s the one he showed in his videos.
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I missed that video. I know there are lots of ways to do it but this is something id have quite a few uses for even in woodworking. I appreciate the info. Thanks for taking the time to post.
 
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