I'm trying to apply the cadence grid model from Notes on patterns and grids
to help me space a new font; the results are turning out a bit strange so I want to check I understand it properly. Looking at that page, very near the bottom there's an example of an /n with its stem divided into 5 units. From that, we derive a 36 unit grid and spacing for all the Latin letters. I created a Glyphs plugin which divides the stem width into 5, sets up a grid, and so on. Then I set the sidebearings of my letters to the values given in the table. The result for light and normal weight Roman looks OK, but when we get into bold...
That seems... wrong. Is this expected? Does the cadence grid idea only apply for normal weights? Or have I misapplied something?
Here's an example of the bold /d fitting the grid - you can see we have two cadence units on the left and six on the right. That's right, isn't it?
(The shape and proportions of the glyph itself are a separate issue - this is My First Serif - I'm just looking at the sidebearings and the spacing at the moment.)