Comments on: Title Block Tolerances and GD&T http://gdtseminars.com/blog/2008/05/13/title-block-tolerances-and-gdt/ Geometric Dimensioning & Tolerancing tips, questions and issues Sat, 19 May 2012 06:26:29 +0000 http://wordpress.org/?v=2.3.1 By: Mike Redler http://gdtseminars.com/blog/2008/05/13/title-block-tolerances-and-gdt/#comment-1037 Mike Redler Sun, 14 Aug 2011 16:24:38 +0000 http://gdtseminars.com/blog/2008/05/13/title-block-tolerances-and-gdt/#comment-1037 Not only are tolerance standards in the title block a good thing, it should be expanded to include basic GD&T features as well. When there is an understanding of expectations, like with the notation "U.O.S.", tolerances and other feature descriptions do not need to be repeated as often. It may require a little time to develop some basic rules for a company's internal standards. It may also require some time to communicate the geometric tolerances in a format that can be applied to the entire document. For example, perpendicularity may need to be represented as an angle in order to be applied to all thicknesses. Following this advice will save time, produce a cleaner drawing and can, in some cases, reduce the probability of errors. Let's not always assume that "old school" is automatically obsolete. Best practices should be based on results and not a presumed expiration date. Not only are tolerance standards in the title block a good thing, it should be expanded to include basic GD&T features as well. When there is an understanding of expectations, like with the notation “U.O.S.”, tolerances and other feature descriptions do not need to be repeated as often.

It may require a little time to develop some basic rules for a company’s internal standards. It may also require some time to communicate the geometric tolerances in a format that can be applied to the entire document. For example, perpendicularity may need to be represented as an angle in order to be applied to all thicknesses.

Following this advice will save time, produce a cleaner drawing and can, in some cases, reduce the probability of errors.

Let’s not always assume that “old school” is automatically obsolete. Best practices should be based on results and not a presumed expiration date.

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