Both the original and remix this is based on are excellent and 95% of the work on this enclosure is credited to those two authors, being EDNation for the original and Paradur for the original remix.
https://www.printables.com/@EDnation
https://www.printables.com/@paradur
During the building of the remix by Paradur I found a few issues which led me to do some alterations and also I wanted to add ventilation/extraction. So here is my remix. Originally the Pro was in the garage but due to it being too cold at the moment I moved it to our Conservatory. It was always my intention to build the Lack but this has just advanced it a bit.
What was evident when doing this was the lack of full build instructions which lead to some confusion on my part when constructing so this was another reason to do this in order to provide a proper guide. Hopefully this will be of use to some people.
Parts List
6mm Button Rare Earth Magnets
https://www.amazon.co.uk/dp/B0BP79VZQP
Various brass woodscrews I had in my stock.
Ikea Lack Table x 2
Printing
I used 0.2mm resolution with a mixture of 15%/20% infill density. I have made a note against each part I would personally recommend doing 20% infill. These are of course alterable to your tastes. If you print all four bottom corner pieces as one print it will take over 20hrs to complete at normal speeds. Only supports I used were for the hinges but it probably is not necessary. I used PTA but you can use PETG. Reason for it being multi-coloured is originally I wanted it all in red. After mucking up the bottom corner posts I had to reprint them but I had run out of red so used yellow. Then by the time I got to do the extra bits I thought heck lets do them in blue. :) Also in the filename it tells you how many you need to print. So x1 at the end just means one and x2 at the end of the filename means you need 2 of these.
Construction
I have added a Neptune 3 Pro Lack Enclosure Build Guide.pdf in the other files section.
The author remixed this model.
Addition of Filament and PSU Cable pipes (model files included)
PSU Mount removed as power supply not removed from printer
Original Filament base/holder removed as it did not fit the Pro Filament arm anyway.
Original Filament guide removed and replaced as it caused too much friction.
Filament Holder Base from https://cults3d.com/en/3d-model/tool/spool-holder-kingurz
(Note ^ this can be any suitable filament holder or Drybox if you do not want to pay for it)
Filament Detector Sensor holder https://www.printables.com/model/349563-elegoo-neptune-3-pro-filament-detector-mount
Ventilation added. (This can be optional)
Ducted Fan parts obtained from https://www.thingiverse.com/thing:4965138
(Note ^ the fan diffuser is optional but watch the Youtube video on it to see the benefits)
60mm USB fan from https://www.amazon.co.uk/dp/B0BW86NJKW
(Note ^ this is experimental with fan size may need to go upto 120mm fan this is just my first attempt the 60mm fan can push 13 cubic feet per minute of air and the area of the Lack is 3.4 cubic feet)
Different size of Plexiglas (or Acrylic) used may be required due to Lack holes not lining up and depends on one of two fitting options. See Build Instructions etc for details. Options are to use new holes for legs or reduce Acrylic width by a few mm's.