Trailer brakes (failed search for thread)

[Finster]

I was just looking at PetervR's Hooded Daf 2800 European roll-off thread and he mentioned he wanted to add brakes to his trailer. This reminded me about a thread were someone made brakes for their trailer and I remember thinking it was quite clever the way they went about it. I've searched for this thread but couldn't find it. Did I just miss it or maybe it was on the Garden or Scale 4x4 and never brought here? Anyone remember this? Thanks.