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Toothy scrapers

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Jhuem:
I am looking at starting my first project and I have seen concave and convex scrapers with teeth that line up perfectly. I have looked for a place which sell these but cannot find any. Does anyone know where to get one?

Pat B:
Make one using a triangular file.

JNystrom:
I made two bows with the triangular file and a cabinet scraper method, but i truly didn't like it. I found out people use and praise a toothing plane blade. I then bought one for myself too. Its obviously better steel than a cabinet scraper and easier to resharpen. But what is the best, it is precise. By filing with hand i found out my cabinet scraper grooves were actually pretty bad even though i tried to make them as good as i could.

BowEd:
I used a saws-all blade and made them triangular teeth.Slightly less than 1 MM or 1/32" deep grooves @ 12 grooves to the inch.Although these are not convex or concave but only flat.

leehongyi:
A CNC grooving knife would be helpful.

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