|Project by shipwright||posted 06-05-2012 06:42 PM||3652 views||1 time favorited||22 comments|
A few days ago poopiekat posted a forum topic about pattern making. I thought these photos may be of interest to enough of you to warrant posting them as a project. When you build custom boats it is often not possible to get the fittings you want or need these days (or even about 28 years ago in this case) especially in bronze.
Back when I was doing that I made lots of patterns and sent them off to the foundry to be cast. I always used aluminium bronze.
Since this is to be a project made of wood, the first photo is the actual Honduras Mahogany patterns, my actual contribution to the process. Sorry about the condition. They have spent the last two and a half decades in a box of junk.
The second photo is of a shaft strut, along with the pattern. When the core is a regular shape, like a cylinder the foundry supplies it. The bottom of this pattern, that represents the hull of the boat, required a core box though.
The third is a gudgeon fitting to hold the lower end of the rudder shaft, with its pattern. Sorry, the core box pattern is long gone.
Number four the strongest backstay lever I’ve ever seen, with patterns.
Number five is the same lever, all assembled and ready to install.
The last one is of the rudder gudgeons on “Sylvester” one of the Benford catboats.
For the record it’s even harder now as small foundries that will take small orders like mine were are all but gone. The one that cast these closed about twenty years ago and is now the site of a condo development.
C’est la vie !
Thanks for looking, questions, comments etc always welcome.
-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/