Step 4: Creating an accurate cardboard joint

Picture of Creating an accurate cardboard joint
This is perhaps the crux of this tutorial, as this technique for joining card together neatly and is not that well known. It involves cutting through the top layer of the cardboard, through the corrugated (wavy) part - but stopping just before the lower layer of card. The edge is then removed as shown below, with a ruler. The results are perfectly presentable for any meetings with designers or users. It is shown in more details here.