I really like 8020 extrusions for ease of use, cutting (carbide blade on a tablesaw works great), versatility, etc. Also, they are very straight and with close tolerances. But the T-Nuts fit loosely in the slots. With such good tolerances inside and out, wouldn't it be possible to create/sell close-tolerance T-Nuts that fit more tightly and accurately in the slots?
If they exist, I've never seen them advertised.
Just wondering.
Gary