The first that I want to show are those that may not be the usual required tools.
Creeper/seat . I got this from AutoZone for cleaning under my plane, but when building, have found it a very valuable tool in the seat position for traversing back and forth along the wing.
The creeper was great, but then I realized that needed a way to keep my tools and clecos with me as I was working. So got this from Lowes for $35 and found it to be very handy for more than carrying around my stuff. If you get one before you build your wing jig and set it up so it will slide under the aft spar for both wings, you can use it to hold your wing skins in place as you prepare to attach them. You can then more easily get the cart from one side of the wing to the other. It is also very nice to be able to keep your stuff on the top shelf so you don’t have to bend over every time you need a cleco or tool. This is plastic and narrow, so is subject to falling over if you are not careful moving it around. I did see one for $39 at Harbor Freight (HF) that is metal and a little wider. For me, this is an essential tool.
There has been some discussion about the Nail Dimpler. One day Bill Mosher, a builder from Greer, SC, was down and we were using the Nail Dimpler purchased from the Sonex people. I showed him how I use it with my pneumatic gun. I have small hands and the Hand Pop Rivet gun was very difficult for me to use, so, I found a way to use the power gun. You must set the pressure to around 28 #. Make a few tests to find what pressure setting works best for you. Bill suggested that if we tape the convex part of the tool to the nose piece ( I use one from the hand tool as it works in the power tool ), then we would not have to be continually handling it. That worked, but I thought it could be better attached with something like JB Weld. I ended up using a different version of the same stuff and it worked perfectly. Note that you must leave room for the wrench, and you will have to modify the wrench. Also note in the last picture that there is a slight crack in the weld material. That is because I forgot to reduce the pressure to 28 #.
In the builders manual for the wing, you will see mention of inserting a brace to support the wing from bowing. They have access to a “machinist jack”, which most of us do not have. I tried to find one that I could afford, and what I could find, was out of sight. Then I thought of a jack that almost everyone already has, and can be purchased almost anywhere for around $25. This worked perfectly for me and it will probably work for you as well.
One very important tool is your air supply system. I wanted mine to be able to accommodate many different tools without having to stop and switch out the tool. Also different tools require different air pressure. My air gun and pop rivet gun 90 #, except that when the air gun is running the Burraway, then 20 #, and the pop rivet gun when it is running the nail dimpler, then 28#. So, I initially set it up with pressure adjusting valves and a manifold that I purchased from Avery. This was still too limiting and very difficult to mount to anything. So, when moving the compressor to the back room for sound reduction, I also scrounged around for some way to improve upon this. I ended up using 12″ sections of black 3/8″ pipe. My system is all 1/4″, so I had to use adapters which made it more expensive and time consuming to set up. However, it is scalable to the Nth degree. All I have to do, is add more sections of pipe ( still looking for 1/4″ ) and tees along with pressure controllers where needed. It also mounts very solidly to the bench.