I bought a RivNut tool from MemFast. I ordered it one day and received it the next, without Rivnuts, so ordered them on friday and got them in the post this morning. Superb delivery from MemFast, and what is a very sturdy design (has a liftime gurantee).
Being a newbie with RivNuts I was quite keen to try it out, and see how it all works.
As I hadnt fitted the two tunnels yet, these made an Ideal candidate to experiment on. For the front tunnel section I though 6 x M6 bolts would do the job, so it was drill time, once the tunnel was drilled I could then drill the chassis, so this was drilled with a 9 mm drill.
Once drilled the RivNuts were inserted and the memfast riv nut tool put into action. It was brillant, simple, no knucles smashed (Unlike Blin/Pop Rivets) and job done. The tunnels now have a secure non permanent fixings, so once installed I can get access to service anything that runs through the tunnels.
I think I may be a RivNut convert. :)