Final post before the end result : )
Today we´re going to do the windows. The material you need to use is plexyglass, it´s cheap enough to buy and you can normally find it in any building supplies or DIY store, I payed for a piece big enough to do 3 side windows on this case 12€ Have in mind there are two types, the normal one and the one prepared for exterior which is a lot more expensive and we don´t need so go for the first one.
Do not cut it with any sort of power tool as it will melt like plastic and make an awfull mess and you´ll find you will spend more time cleaning the piece up than if you cut it using a different method. A cutter for example (a decent one) will do the job. I find that to get a straight line, a metallic ruler does the job but of course feel free to use anything you feel comftable with to get a straight line.
So yeah, do a few runs with the cutter until you can see from the plexy border that you´re about at least half way there. Then you can bend it both ways (with care) until it snaps and you will have a clean cut. If need me you can sand the border down.
It goes without saying that you will have to measure the piece before you cut it so you know how big it needs to be. Have in mind to leave a decent space on each side if you´re going for as big a window as possible or you´ll find it prevents the side from closing on the case.
Once we have our piece ready we need to attach it from the inside side of the side panel. There´s several ways of doing this but I find the cleanest way is using decent double sided tape, for example, the 3M one is extremely strong and will do the job just find.
And we´re done, we can repeat the process for any and all windows on our case.
On a final note, if you decide you want to mount a fan if your sidepanel has the grill to do so, I would suggest you fit the window first (without the tape) and then measure where you need to cut to fit the fan. Personally I won´t be fitting a fan, I checked I didn´t need to temps wise and as a personal taste decision, I preffer it without one.