Here are some more tools I acquired later on in the build and that I believe are usefull or necessary.

A Ratchet screwdriver

I used this tool the first time in Freds workshop when attaching some adel clamps. This screwdriver uses extention bits and can rotate left and right (righty thighty, lefty loosy). The advantage is that the screw driver bits can stay on the screw while screwing the vise in. The more you lift and reposition the screwdriver, the more wear on the head. This ratchet screwdriver allows you to position once and then screw the vise in completly without lifting it again just as with a socket wrench. Worth the 10 bucks.

You can find them everywhere in home improvement shops as Lowes, Home depot's, Ace, Harbor Freight, Sears, ...

Allen wrench set

At some point, I had to thighten a vise that sets the stall warner body in the leading edge of the wing. The screw had an allen wrench style head. Optimistically, I took out my European allen wrench set and noticed that also in allen wrench keys, there are imperial sizes.
Damn ! Picked this one up at Ace hardware.

Hole saw cutter kit

In various locations, you will need to saw holes out of a plate. (lightning holes, firewall passthrough for heat box, ...) These holes are far beyond the reach of a unibit.

This cutter set is from Harbor Freight tools, costed 40$ and goes up to 2.5 inch. Pay attention when buying to make sure it cuts metal ! There are plastic and wood versions also.

Don't expect miracles from these, they make very rough and unprecise cuts but it gets you real close to the dimension you want and you can clean up and ream out the rest with a 3M deburring wheel on the die grinder.

I never use these on the precise size required but go undersize and then finish is of with other tools.

Rotary cutter toolset

The rotacut kit does more or less the same thing as the hole saw kit. But,... it does it with great precision. It goes deep at the same size, something you can't get with a unibit because of the step up nature of the unibit.
With these cutters, you can cut so precise that it would be as equal as using a drill bit.
Where do you need it eg: the reinforcement angle in the leading edge of the fuel tank, to cut the fuel passthrough to the flop tube, cutting larger size passthrough bulkheads for the vent lines and static lines, ...

These allow you to make very precise cuts and nice clean holes from thin to even thick material.

Angle cutter

This is kind of luxury but I kind of like safety. You can install a 3 inch cutting wheel on the normal die grinder but when it breaks, you are unprotected. (I do hope you are smart enough to wear safety glasses and earing protection).
There is also the hassle each time to take of the wheel and put on another accessory (the lazyness factor).

Therefor decided to buy this 3 inch cutting wheel air powered cutter with protective shield around the disc.
I got it at Harbor Freight in promotion for 10$.

Red RTV

Buy this at Autozone. The paste is used for firewall application. The red one can withstand the highest temperatures. The black one is used to glue stuff in but should not be used in high temperature areas.

Oil fogger

I'm tired of putting drops of oil in my air tools each time I start using them. So, bought this oil fogger to install behind the water filter.
I will need a T split piece in between so I can tap air with and without oil.

Side note: something I learned from Hugo, you can not use air tool oil in the pneumatic squeezer. There is some part in leather (?) in the squeezer and it deteriorates when exposed to oil.

Longeron dies

Bending the longerons freaks me out. I'm scared to death to mess it up, having to order and ship them again from Vans. Special crating, extreme long part and shipping expense above my calculated budget.

I found these longeron bending dies specially made for the RV-7. At least it takes part of the risk away.

Found them at Buller Enterprises. Follow the link.

1/8 inch pop rivet dimpler set.

Needed when building the fuselage. 1/8 pop rivet dimpler set to make dimples for AN426AD4 rivets in places where the squeezer of C-frame can't reach. (mid of firewall eg).

LPS-3 rust inhibitor

Fred informed me some time ago that some of the delivered parts start rusting on the inside if not treated (inside of tail wheel fork, rudder pedals, ...)

To protect against this, spray som LPS3 inside and you're good for a year. Bought at Ace Hardware store.