Love that brace... so organic... (Yes, spelled correctly)
I'd been thinking of ways to attach the mesh while keeping it taut. Was not sure if just using tabs welded to the back of grille bars would keep the top and bottom tightly in place. So looking at doing it this way.
The mesh I ended up using was branded SAAS and sold through Autobarn and others. SAAS Body Kit Mesh Black 1200 X 280MM
I prefer this style of tin snips when you need to cut further into a sheet. These are made by WISS and they work like a throatless shear.
I thought it would look more professional if I curved the mesh to follow the back of the bars without gaps.
The mesh was not wide enough for my grille with the extra two slots. I had also ordered one that was, but it had a bit bigger diamond pattern that was less obvious. This one also has a twist so you must flip one side to keep it looking the same when run vertically. Viewed this way gives the most 'screening'.
To make the bends I put some tape down along the edge of the bench to save marking it. Then holding the ruler down, just bent it down using my hands. For the bigger radius curve, I bent it over some pipe.
I made sure the join was behind one of the grille bars. The pieces nest really well and could be held in place with the biggest rivet I could fit through the mesh holes.
I couldn't attach it directly below the grille slots as it would show through the front of the grille. By having it fold at the top and bottom, the fasteners will be less obvious.
I drilled and tapped some 3mm-1/8" aluminium sheet with the holes matching the ones in the mesh. Stainless steel button head screws then screw into these putting tension on the mesh. Worked so well that no additional fixing behind the grille bars was needed.
I ended up flipping the mesh so that the twist in it matched the angle of the grille so there was little obstruction when viewed head on. Also, the airflow now has a straight path. When viewed in front of the radiator it makes a bigger difference and makes it look less vacant. Will make more sense once I get shots of it all back together.
Haven't quite finished putting it all back together but wanted to show the mesh installed with the radiator behind. Gives more security this way too as no way to release the bonnet catch except by the release lever inside the cab.