Shoebox hatch

[fallguy1000]

So, I am trying to design a shorbox lid.

I found the problem is the hatch lid needs to clear the coaming, so the lid can't be too close.

So, I have a drawing. It highlights the engineering problem @lidpath.

The solution is to overside the lid, but then it is harder to seal, so I drew o-ring seals on both the coaming and lid edges.

Any comments are welcome. There are actually 5 places I need/want to use a shoebox lid design.

The damn picture is upside down!

[fallguy1000]

I think I need to use a draw latch. A 90 degree one.

[fallguy1000]

Still trying to find a way to latch this lid.

Disregard the ugliness; all temporary.

[Aripeka Angler]

How about this on top latched into the inside of the inner sleeve?

[fallguy1000]

How about this on top latched into the inside of the inner sleeve?



731C29A0-FD6E-40A9-ACF0-FE561C583867.png

I thought about them. Might be best or at leadt better than bungies!

[Rogerogrant]

How about a hinge like this that lifts the entire lid up and away from the lip?

[fallguy1000]

How about a hinge like this that lifts the entire lid up and away from the lip?

Thanks. I built enough clearances for a regular hinge. I think? All I need is the latching. The boat has 3 of the gemlux AA showed.

[Evan_Gatehouse]

1. Use a hollow gasket. Surgical tubing works well 1/4" OD. Make a shallow groove and glue it in with contact cement
2. Yes, you need a gap to allow it to open. I sailed about 1/4 way around the world with hatches that were held in place with... gravity.

Eventually I used a HORIZONTAL hole with a nut epoxied into the inner lip, and a bolt through the outer hatch to hold it closed. Ugly and simple. You had to sit on the hatch to compress the gasket so the holes lined up.

[fallguy1000]

1. Use a hollow gasket. Surgical tubing works well 1/4" OD. Make a shallow groove and glue it in with contact cement
2. Yes, you need a gap to allow it to open. I sailed about 1/4 way around the world with hatches that were held in place with... gravity.

Eventually I used a HORIZONTAL hole with a nut epoxied into the inner lip, and a bolt through the outer hatch to hold it closed. Ugly and simple. You had to sit on the hatch to compress the gasket so the holes lined up.

One sure way to keep the thief out; make him pick up a wrench!