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Re: Moving new K700S

 

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Get Brian's square.? A million uses and a very fair price.? Dave

From: [email protected] <[email protected]> on behalf of david@... via groups.io <david@...>
Sent: Saturday, March 5, 2022 4:04 AM
To: [email protected] <[email protected]>
Subject: Re: [FOG] Moving new K700S
?

David, your Flickr video seems to show you checking along approximately 6¡± of the edge of the square. Is there a need, or merit, to use a larger square? Would an 8¡± x 12¡± square be sufficient? I ask because I see demonstrations with much larger precision squares. Given that the fence is an extrusion rather than a machined surface there are probably pros and cons to small versus large squares.

The square I use is 500 x 250mm, and it¡¯s 10mm thick. ?It¡¯s a precision machinist square made in Poland and very accurate. ?I like it because it has a thick edge to indicate again - most machinist squares have a thick heavy short leg and a thin blade for the longer leg so they don¡¯t naturally lay flat on a surface like the sliding table. ?


I generally put the long edge against the crosscut fence and indicate to the short leg. ?If I get less than 0.0005¡± of indicator deflection over the 10¡± length of the short leg, I¡¯m happy with that level of accuracy. ? That¡¯s equivalent to 0.006¡± over 10 feet - about the thickness of a sheet of ink jet printer paper - and certainly more accurate than any 5-sided cut test.

If you want more assurance on accuracy, Brian Lamb makes a very nice precision triangle-shaped square that is 1/4¡± thick and 16x24 inches. Details on his square are here: ?


David Best

https://www.instagram.com/davidpbest/
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