As we've installed the "Upgrade Package" to our Zodiac CH 601 XL we've been using the same sheet-metal hand tools that are used in building and assembling an aircraft from a standard kit. One needed new tool is a right angle drill or drill attachment. We have used this extensively with the upgrade package to drill out rivets and to drill in the new parts.
While a regular straight drill gives you much better control and precision, a right angle drill allows you to drill in tight areas that you just can't access easily with a straight drill.
The right angle drill attachment works with an regular hand-held drill and typically sells for a lot less than a right angle drill which tend to be expensive (for a tool that you won't use often). Over the years we've looked at many of the right angle drill attachments on the market. Most are too bulky (with chucks) to reach tight areas, or are too cheaply made to drill round holes or to hold up.
One readily available and affordable right angle drill attachment that we do like is the Tight Fit® Right Angle Drill Attachment. It sells for about $35.00 (without the drill bits) and can be purchased through various suppliers.
Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, power distribution panel, Approach Fast Stack harnesses, Dynon and Garmin avionics, and more.
Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.