April 29, 2014

Grading vocabulary - Nest and stack point

As I have attempted to learn how to code (computer programming), I have been stymied by one simple problem. Vocabulary. Most programming manuals or tutorials assume the learner has some basic knowledge about programming and skip explaining essential skills or words. This is even true of the manuals designed for complete idiots and absolute beginners. One good example in the programming world is the word compiler. I understand it on a basic level as a set of instructions that tells the computer how to link various files to create the executable software program.* There are various ways to deal with compilers depending on the programming language and platform used. The thing is I didn't know what compilers there were, which to use, how to write the instructions, etc. All I could find was some pretty lousy examples that I could copy and paste and they magically (or not) worked. I could present dozens of examples of this disconnect as I've stumbled my way through while working on SodaCAD.

Grading manuals are similar, at least the ones I have used. They lack sufficient or clear explanations of the most basic of terms. Often times the manual writers skip sizing theory and jump to demonstrating their preferred grading method. This includes the much revered Jack Handford grading manual, the manual I still use and recommend today. Handford's book was the first that helped me understand grading but I recently reviewed the book and noticed the notations I made where I was confused.

One of my goals in writing my grading manual is to include a Grading 101 section. The above drawing is the illustration for two terms.

Nest - pattern pieces within a size range that are stacked along a common point or line. Indicated here by the horizontal line and star.

Stack point - the point at which pattern pieces are aligned, generally located in the middle of the piece but may be located elsewhere (indicated by the star). In CAD grading, the stack point may also be called the point of origin and can be easily moved as needed.

I'm still working on my vocabulary list and guide. If there is a term you have heard and would like explained, please leave a comment below

*I realize I probably just used some vocabulary that the readers of this blog might not know. In any event, it illustrates the problem.

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