Companion DIY Drill Guide
Build a simple aluminum jig to drill AN bolt threads for safety wiring—perfect for when your hardware bin is missing just one critical part.
Nuts. What to Do When Thrown a Curve
When fasteners crowd a radius or bend, radius washers, blocks, or spot facing can solve the problem—without compromising strength or workmanship.
Case Parting Plates
A low-cost, effective method for separating stubborn Lycoming O-290 case halves using homemade parting plates and basic hardware.
Taking a Shine To 6061-T6 – Part 2
Cutting the initial shine with NuShine II F9 is key to a polished finish. Here's how to master the pad, pressure, speed, and polish for gleaming results.
CAD for the Home Shop
Explore how EAA members use Solid Edge and 3D printing to design, model, and build aircraft parts—affordably and efficiently with modern CAD tools.
Building a Custom Engine Mount
How a custom engine mount for the SR-1 was CNC’d, stress-tested, and welded for strength, weight savings, and tight packaging.


















