Stacking keel backing plates?

[Tranona]

Scrimping by the builder, then.

Scrimping implies saving money, but that was not the reason. It was incompetence and failure to understand the new design.

 

[thinwater]

Scrimping implies saving money, but that was not the reason. It was incompetence and failure to understand the new design.

A failure to invest in training, engieering (the builder needs engineering expertise too), and communication, all of which save money. A failure to provide supervision and to inspect a critical build check points by Oyster, which saved money. These things are specifically important when a design relies more on complex execution and brute strength.

But more importantly I also plainly used the wrong word. I meant skimp, which implies using less material than they should have. Thank you for catching that.

Both, I think.

I own another boat (not the cat in the avitar) where the keel has had troubles because of skimping (braces missing because of mis-exicusion), braces and beams that are under size (skimping), construction that should have simple been more robust (skimping), and a failure to inspect the build process (scrimping). These very often go hand-in-hand.

 

[Martin_J]

So I've gone ahead and added an additional 5mm plate to each of the existing plates. Pretty happy with the result, looks much more heavy duty.

Thanks everyone for your help.

Now to paint it...

Posh looking plates... They've got nicely rounded off corners (which I thought was usually done to reduce point stresses, so even better).



Am I missing out. Does everyone else have rounded corners on their square washers?

 

[vyv_cox]

Posh looking plates... They've got nicely rounded off corners (which I thought was usually done to reduce point stresses, so even better).

View attachment 151883

Am I missing out. Does everyone else have rounded corners on their square washers?

You can't see the corners in my post #2 but they are sharp. External corners are rarely stress raisers.

 

[Martin_J]

You can't see the corners in my post #2 but they are sharp. External corners are rarely stress raisers.

It was a bit tongue in cheek... Just thought rounded corners did look a bit snazzy..

 

[Martin_J]

Sharp external corners are a stress raiser on my carrier bag when I walked back from the supermarket.

If the pack of ham had a rounded corner it wouldn't have poked through the bag.

The cans of beer with rounded edges didn't poke through!

I digress. Back to the original post. I did round off the corners when I replaced a few square washers but I think that was mainly aesthetics and to help with getting any future coating to stick.

In the end I coated them with the stuff you'd put on cables buried underground. Perhaps somebody will come up with the name of that stuff... sticky and dark coloured.

 

[vyv_cox]

Sharp external corners are a stress raiser on my carrier bag when I walked back from the supermarket.

If the pack of ham had a rounded corner it wouldn't have poked through the bag.

The cans of beer with rounded edges didn't poke through!

No. The bag is stressed, not the corners!

 

[Martin_J]

Isn't the bag a bit like like the hull would be to the corners on a square washer.

I agree with you though... any impact is so minimal is not worth considering.

I am still however intrigued where the rounded cornered washers came from when all I've seen for keel stud washers is what looks like punched out squares.

 

[nickpitcher]

Isn't the bag a bit like like the hull would be to the corners on a square washer.

I agree with you though... any impact is so minimal is not worth considering.

I am still however intrigued where the rounded cornered washers came from when all I've seen for keel stud washers is what looks like punched out squares.

Got them from my local stainless supplier in New Zealand: Square Washers / 316 Stainless - Anzor Fasteners

This place is a stainless Disneyland.