So far, I've only had the time to wind one inductor, but I thought I'd share:
For the 1mH inductor:
CSC CM400060 (OD=40mm, 60u, MPP) "Bulk inductance"
~110 turns of 0.45mm UEW enameled wire
CSC CM127060 (OD=12.7mm, 60u, MPP) "Coarse adjustment"
~20 turns of 0.45mm UEW enameled wire
CSC CM039060 (OD=3.9mm, 60u, MPP) "Fine adjustment"
~3 turns of 0.45mm UEW enameled wire
The first two cores are mounted to the housing using 3/8" rubber bumpers, with 3M VHB tape on top of the bumper to make a double-sided 3/8" bumper (if you will). Then, I flooded the housing with clear GE Silicone II. (No photo yet.) It's not the best consistency to work with. Regular flexible potting compound would have been better, but I cannot justify the price. $50+ to fill just two of these little Hammond enclosures.
With the 40mm core only, the closest value I could get was about 1010mH@100KHz, which really isn't so bad. But, figured I could do better. So, I removed a turn and added the 1/2" (12.7mm) toroid. This got the inductance within ~0.2%, so I added a little extra inductance with the 3.9mm toroid to get within 0.1%. However, after finalizing the mounting position in the housing and after "potting" the inductors in some GE Silicone II, the inductance crept up to about 1002mH. So, I removed the small 3.9mm toroid. (Photo shows original configuration with fine adjustment toroid.)
In the end, if you try to make your own, you could just get lucky and not have to bother with any of this.
Also, winding 110 turns on this core requires about 5.5 meters of wire. Took me close to two hours and extreme attention to prevent the wire from kinking, due to its very long length.
The meter I have access to (Extech LCR200) shows between 996 - 997mH @ 100Hz, 1KHz, and 10KHz, and 1000.9mH @ 100KHz. I'd like to check it on a TG + SA or VNA to check its resonant frequency. It seems that the inductance is increasing ever so slightly with frequency.