In Case You Missed It
Avionics Bootcamp: ADS-B For Canada and Beyond
If you’ve equipped your plane for the U.S. ADS-B mandate, there’s a good chance it won’t work in other countries, including Canada.
The Home Machinist
If you need to send a part out to be built by a professional shop, a good drawing, well identified, is essential. The KISS principle applies, and be sure you don't request closer tolerances or more exotic materials than you really need, or it will cost you.