Help on building an enclosure

[JAZZCNC]

In the DIY context it sounds like personal preference dictates and other than the VFD cooling fan sucking in crap if it's not enclosed I don't suppose it matters, in an industrial setting it would always be inside the enclosure with suitable filtered vents for cooling. If the wiring and layout is done properly there should not be any problem with interference.

Fully understand what you mean Eddy but end of the day we are in a DIY setting and building to industrial level is prohibitly expensive to do correctly and often massive overkill in a DIY enviroment. The problem I've found with interference comes not so much from Incorrectly wired or layout but more from crappy sensitive electronics like Chepa Bob's etc which you often find in DIY enviroments. This is why I won't use Cheap Bob's Drives etc anymore they are just a Pain in the arse.!!

Regards the out of cabinet VFD and Front panel then Yes with Chinese VFD's you can wire the front Panel and fit to front of enclosure but that then means having Enclosure located where it can be seen and often you'll want that out the way under machine or some other inconvenient location.
Where has placing VFD close by the machine is relatively easy and doesn't require messing around with extending wires or buying expensive Add-on cards Etc.

Really like you say it's down to individual preferance at this level. End of the Day we just need to be safe and not worrying about making some HSE boff happy and limiting the potential for Baldness inducing problems.