Ah ha! Got your interest right? This is a little video that introduces glass as a scraper. I use them all the time and prefer them in many instances to steel ones. Plus glass is free. It is you know, nearly everywhere and in quantity. Take a look and see, it only lasts a few minutes. Thanks for looking, Dan.
Added note: You can use glass for a long time before it dulls. I sometimes use one piece on an entire project. It’s harder than metal scrapers. But it doesn’t matter as long as you’ve got plenty of free glass and a hammer!
-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful. http://gagnerwebsite.com/Deceiver/Craftsman_on_the_lake/Craftsman_on_the_lake.html