Lifeline Stanchion Backing Plates
Original Backing Plates
New Design for Backing Plates
|This was the original design sketch before I improved the design of the lip.|
|An illustration of the cross section of the original backing plate arrangement |
and the new backing plate arrangement with the improved lip design.
|The lip is fastened to the aluminum plate using three #10 flat head screws |
with nylock nuts on the underside.
|This is an end view of the newly installed improved backing plates. The function|
of the lip is easy to understand in this view.
|In this view the greatly increased area of the new backing plates can be realized.|
Cutting out just one semicircular backing plate took about 2 hours and 4 carbide-tipped jigsaw blades. I found more appropriate jigsaw blades with bigger teeth (with 8 teeth per inch made specifically for cutting aluminum) for subsequent fabrication and in researching some online forums on metal fabrication I found out that running the (variable speed) jigsaw slower and using WD-40 (or wax) as a lubricant greatly improves cutting the 1/4-inch aluminum plate.
Calling this project complete (a little prematurely, I might admit), makes 148 completed boat projects! I pulled a couple of projects off my future boat project list to cause a reduction down to 50 projects to go! We are 3/4 done with 20 months to go until we leave. This also means that we have to compete about 2.5 projects per month, which is doable.