Small rigid router - Design advise needed

[EddyCurrent]

-About the fans-make them all not to suck. This is wrong, it sucks . Make them take away the air and fit exchangeable air filter somehow. Cheap car motorcycle tuning filter or whatever similar. You don't want dust inside.

Whatever you do with the fans there are two things that are a must, there is no other way;

1. Air entering the cabinet must be filtered.
2. The pressure inside the cabinet must be higher then the pressure outside.

My vfd is inside the panel, this is industry norm if done correctly and the manufacturers rules are obeyed. If you do put it in another enclosure then it will also need fans and filters.
Also you can either save money or do it right the choice is yours but only if the machine is for your own use.

This shows a typical layout of a bigger panel but you can see they keep the power control items away from the signal items.