You currently need to send an email using your regular email service, since the question form on this page is currently offline. We plan on restoring it in the future, but for now, it's easy enough to send a regular email.
You will have to type the email address yourself since we end up getting a lot of computer generated spam messages if we list the email address directly. Just use common sense and replace the parts that show "(at the domain of)" and the "dot" with what would normally show in an email address.
For help, send emails to:
questions (at the domain of) teaching3d dot com We'll do our best to answer them.