Bower anchor project by Sizzolo

[Kenchington]

I don't think I could do as well at 1/1 scale! 

 

And I have tried: Not an anchor ring but one on a mooring buoy.

 

Trevor

[Desertanimal]

You may have said, but what’s the diameter of that ring? 
Chris

[Sizzolo]

1 hour ago, Desertanimal said:

You may have said, but what’s the diameter of that ring? 
Chris

30mm after parcelling and  puddening

[Sizzolo]

I made some more progress. Still likely to finish the ring tomorrow. 

note, 13 strands chosen as it aligns with Steel’s estimate of the average (at least I think it was Steel… so many references). Due to a nicely working ropewalk I was able to calculate the exact diameter required. 
 

I also ran a quick test on applying thinned wood glue and then my mix of Stockholm tar (25%tar, 75% boiled linseed oil). The test was perfect - I was worried the glue would generate a barrier but the tar/oil still had a decent effect. 

Edited Wednesday at 09:18 AM by Sizzolo
adjusted pic size

[Thukydides]

I am really enjoying this build log, learning so many things I was not aware of. I don't really have anything to add apart from great job.

[Sizzolo]

The fiddly bit is done!

Edited yesterday at 02:15 AM by Sizzolo
adjusted picture size

[Sizzolo]

More progress today.

Work on some shackles for the chains. 

Anchor ring tarred with a mix of 75% boiled linseed oil, 25% Stockholm tar. Ends of the puddening received a thicker dose of Stockholm tar as I saw this in a reference (apologies, I need to start writing down references when I see them). 

Cable fully wormed. I’ll add some seizing at intervals near the ring before the starting point of the Keckling/ serving - so most of the worming will be hidden. 

 

I’ll try and take better pictures in sunlight when it’s all put together. 

Edited 19 hours ago by Sizzolo
resized pictures

[Sizzolo]

Some very useful information here, and fantastic pictures:

 

https://anthonylonghurst.com/wp-content/uploads/2018/05/Signals-94_pp02-11_Endeavour-standing-rigging.pdf

 

I'm hoping to make time to read his Anthony's other published works later:

https://anthonylonghurst.com/#published

 

I'm trying to identify the diameter of the serving rope. I can make a good estimate based upon pictorial evidence but it'd be nice to see a table with measurements.

[Sizzolo]

Better picture of the upper half (in daylight!)

Edited 8 hours ago by Sizzolo
added the original plan

[Sizzolo]

Brief test during the lunch hour on serving the cable. This is 0.7mm serving rope : too thick I think...

Edited 6 hours ago by Sizzolo
changed image size

[Kenchington]

Maybe not much too thick, as you are serving a cable to protect from chafe on the seabed, not serving standing rigging to keep the weather out and protect against chafe from the sails.

 

Trevor

[Sizzolo]

18 minutes ago, Kenchington said:

serving a cable to protect from chafe on the seabed

You know what - I'm going to go with that. I've seen reference to serving, then rounding, and on top of that likely keckling and platting near the end of the cable. Aesthetically it looks nice, it won't take a million years (as with anything thinner by hand) plus I can do a short amount of serving with thinner stuff near the anchor, underneath this thicker 'keckling' to represent the multiple layers of protection (plus there'll be chains on top).