So you've bought some PowerEdge Tower servers but these were originally rack servers.
No problem, you thought, as you remove the rack 'ears' and sourced a top cover + feet to turn your T430 or T630 back into a Tower.

But one problem remained: On Rack Servers, the front panel is actually shorter by 15mm, leaving some of the internals/electronics exposed to dust and spills. Here's the top of a T630 converted back to 'Tower':



Then I realized we were in 2019 and that 3D printing is now common. There are companies on the Internet that deliver your 3D printed CAD files to your door.

So, I started FreeCAD's Appimage on my RHEL machine and designed a part that fit the size of the gap and borders I had just measured:


The CAD files I created are located here:
FreeCAD

After a couple weeks, the parts (one for my T430, another for my T630) were received. I had gotten the color wrong but at least they did fit nicely:


I didn't have any black paint so I used a 'sharpie' pencil to make the surfaces darker:




And the final result was fine (no more gaps):