<April 18, 2010>

Fabricated Tunnel Cover

I've actually built this tunnel cover litte by litte over the past two to three weeks, but I never bothered to update the log, so I am just going to lump it all into one entry.

After fabricating and drilling the F-741A Cover Supports, I fabricated the F-741B Tunnel Cover, drilling it to the Supports. I won’t go into details, but I screwed up the original cover and had to turn to some scrap .040 to make a second. Suggestion, be careful when laying out your holed on the cover or you might run into issues with edge-distances on supports.

Instead of using the prescribed rivets, I used NAS1097 (-4s) to rivet the cover to the support.