I've always liked the idea of guard armies massed in trenches awaiting an enemy attack. I searched for quite a while for trench systems online and they're either way too expensive or just not suitable for 40k. So, I started searching for tutorials on how to scratch build them and bummed out on that one as well.
So, I've decided to make my own. I'm looking to make initially four 2'x1' tiles that I can line up for make an 8' trench line. So far, all I've done is draw up some simple cross sections and sketched out a few layout ideas.
As a tip, if you're going to make your own terrain, especially stuff that models can move inside, I highly recommend taking a little time to plan it out and make sure you can actually fit models inside it, as building a model that you can't use is heartbreaking, trust me ............. I know.
As a side note, as a project, I'm going to try to film the process and do a video tutorial for youtube. In all honesty, this might get sidelined by family life, but I'll try my best.