So I'm slowly tooling up to scrape my shaper. One of the items I will need is a large, accurate square. Enco has some large cast iron squares on sale. I'm thinking either something like this:

http://www.use-enco.com/CGI/INSRIT?P...PMAKA=418-4145

or

http://www.use-enco.com/CGI/INSRIT?P...PMAKA=418-4345

Now, I know that I can scrape them "perfectly" square if I have three of them. But I don't want to have to buy three of these beasts.

So is it possible to get away with two 6 by 6 squares and one big 12 by 12 square? Basically I would treat the big one like it was 6 by 6 but with an added step of scraping each surface flat after referencing one of the other squares. I.e. I indicate off of one of the other squares and the surface plate. Scrape as needed. Turn over and scrape the entire side into the plane that I just established using the small square. Turn around and reference the other square, etc.

Or should I just get one and fiddle with indicators to check for squareness as I go?

http://www.use-enco.com/CGI/INSRIT?P...PMAKA=418-4145

or

http://www.use-enco.com/CGI/INSRIT?P...PMAKA=418-4345

Now, I know that I can scrape them "perfectly" square if I have three of them. But I don't want to have to buy three of these beasts.

So is it possible to get away with two 6 by 6 squares and one big 12 by 12 square? Basically I would treat the big one like it was 6 by 6 but with an added step of scraping each surface flat after referencing one of the other squares. I.e. I indicate off of one of the other squares and the surface plate. Scrape as needed. Turn over and scrape the entire side into the plane that I just established using the small square. Turn around and reference the other square, etc.

Or should I just get one and fiddle with indicators to check for squareness as I go?

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