Font tech workshops with Frederik Berlaen, Andy Clymer and Ben Kiel in June

Type@Cooper is offering a series of public font tech workshops this June.
Registration is open now.

June 1 & 2 Robofont with Frederik Berlaen and Andy Clymer
June 3 Interpolation with Andy Clymer
June 4 Kerning with Ben Kiel
June 5 & 6 Accents with Ben Kiel
June 8 & 9 Intermediate Python with Andy Clymer
June 17th Building Open Type Features with Andy Clymer

Fontlab: Tri Master Interpolation - HOW ?


Hi everybody,
I'm currently struggling with the following problem - I have ultra light, regular and ultra bold and want to interpolate them in Fontlab MM space, so I could create an extensive family. As it seems, Fontlab MM space does not allow for the use of intermediate design (Normal) to be place between the two masters - ultra light + ultra black. (or am I mistaken?)

So that leaves me with two choices:
1) to keep two MM files with light - normal and normal - black interpolations and constantly troubling about consistency
or 2) use two weight axis in same MM font and do mind-bending slider-switching so I could achieve tri-master interpolation in four-master space ?!?

Family Stem Weights Calculator


This is a simple little tool that will help you plan the stems weights values across a 9 styles family.
Input your thinnest and boldest stems values, and it will show you a wide range of possibilities to get you started.

The first column will provide steps of equal size.
The last column will provide progressive steps.
The 3 columns in the middle will provide intermediate steps.

You can use this values as a starting point to plan your family.



Simplepolator allows you to interpolate compatible glyphs in the same font, without leaving FontLab nor interrupting your workflow.

Simply select two compatible glyphs and run the macro:
Five new glyphs will be automatically created, allowing you to choose the best variation.
Making it super-easy to apply the Gunnlaugur SE Briem's method on "How to make mistakes.

A quick video showing how to use it:


Superpolator tips - tricks - tutorial


Hi guys,

I recently bought Letterror's Superpolator. I've seen all the video's about it from the Robothon 2009 event, but still the program stays a bit of a mystery to me. Since there is no (known) manual for Superpolator, other than the Robothon 2009 video's, I hope there are some people out there willing to share tips and tricks. Perhaps we could even build a wiki page for it.

These are the issues I'd like to be enlightened on:

1) Importing/updating individual UFO glyphs
If you edit your masters in Fontlab and and want to update them in Superpolator, do you replace the existing master or can you update just the glyphs you editted in FontLab?

2) Automatic update master in Superpolator

Interpolation curve for multiple weights


Hello everyone!

I've already read Luc de Groot's stuff and these forum's related topics, but I'm still wondering about this.

What's the best way to calculate the values between two weights?

For instance: I have a Harline and a Heavy cut as my two extremes and I want to generate instances for the other weights. The thing is that I was these instances to be optically appealing.

Thank you in advance.

Bold How-To

Indices : How-To : FontLab Interpolation Tutorial

Most discussions of methods to make bold letters use sans serif letters as an example. Since one of the great virtues of FontLab interpolation is that it preserves curve quality and character, I decided to use a serif example that includes curved stems and very irregular forms: Adobe Jenson Pro.

The first thing to do is to put the original outline in the mask layer (default Ctrl+M on Windows). During interpolation, FontLab will display both the result of everything you do and the original state, but having the initial glyph shape in the mask allows you to maintain a visual reference through multiple interpolation passes.