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Tampilkan postingan dengan label back. Tampilkan semua postingan

Selasa, 27 Desember 2016

The Herons are Back

yes, the herons are back.  There they are out back of the shop on the other side of the fence that divides the federal land from that under the control of the city of Alameda.  A few years back, there were maybe five herons that used to hang out back of the shop.  This year there were twelve that I counted plus a few more hanging out in a Monterey Cypress just off to the right of this pictures edge.
And here we are zoomed in just a bit more on the great blues.  Off to the sides are Canadian geese also hanging out and choosing nesting sites.  I imagine it must be mating season.  Not sure, but the male herons might be the ones with the fancy Mohawks and the females the ones with the more slicked back look.
What a difference a fence makes.  On our side of the fence, nothing is going on bird-wise.  On the west side of the fence, birds are doing their bird thing.  Not that they spend much time thinking about the fence, but they do seem to realize that humans dont go on their side of the fence and so they go about their bird business which is eating and apparently this time of year, reproducing.  Hope it works out for them.
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Kamis, 10 November 2016

The back story

Now that weve gotten the introduction out of the way, lets get you caught up on the back story.

Ill spare you the details of my journey into the world of boatbuilding, but the plot summary goes something like this: Guy caught up in brutal, lengthy divorce seeks tranquility; Looks to water; Wants boat; Wonders if it is possible to build one himself; Stumbles into world of boatbuilding; Gets hooked. You can fill in the blanks with your favorite feel-good story or courtroom drama. Theres been plenty of both.

I knew absolutely nothing about boats when I started. The first design I found online was a very attractive Jon Boat from Uncle Johns General Store. From there, a builder directed me to the famous Bolger Diablo from H.H. Payson & Co. A little more online searching brought me to the Bateau RB-14 Classic Runabout. This was when it first occurred to me that it might be possible to actually build one of these gorgeous classic-looking boats. Having now learned the term "Classic Mahogany Runabout" (remember, I knew nothing about boats), another online search instantly brought me into the world of Glen-L Marine. By sheer dumb luck, the Glen-L group was having their annual Gathering near my home, and less than two weeks later, I was actually seeing these hand-made boats firsthand. And riding in them. 

Yep. I was hooked.

Soon thereafter, I ordered the Glen L. Witt book Boatbuilding With Plywood and read it cover-to-cover. I decided on the "Squirt" design as my first build, ordered the plans, and got started. 

Unfortunately, I never actually finished the Squirt. Not that its hard to build, but I made several mistakes initially. The more backtracking I did to correct these mistakes, the more I questioned the logic of building a two-person boat when Im a single parent with two kids. The thought of leaving one of them standing on the dock on launch day just didnt sit right with me. So six months later I chose another design, the Glen-L Utility.

In September 2011, I took my first ride in a gorgeous Glen-L Zip.


By December, Id read "Boatbuilding With Plywood" and started building a Squirt from these plans.

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Sabtu, 15 Oktober 2016

Unangan Single Bladed Paddle to Double Conversion and Back Again

When I first saw this picture of a double bladed paddle, I thought it was a new Aleut type.  And so I made a copy of it.  As it turned out, it was too short for me and I never used it after its original trial. Later, the photo showed up on some forum and somebody perceptive pointed out that the double bladed paddle looked like it was two single bladed paddles lashed together, possibly after having been sawed to better fit together. Sure enough, if you look carefully, you can see the lashing that made one paddle out of two.  The picture was taken at the Chicago Field Museum when it was the site for the World Fair.
The problem with using a single bladed blade shape for a double-bladed paddle is that the single bladed paddle is designed to be used more or less vertically so that the full blade is immersed in the water at then end of the stroke.  The blade on the double bladed Aleut paddle is widest near the tip so you can get more blade in the water at the beginning of the stroke at a lower blade angle.

Click on the photo for a better view.  Note the single bladed paddle tucked under the improvised double bladed paddle.
Just recently, it occurred to me that the one paddle out of two process could be reversed and if I cut my too short double paddle in half and spliced some more wood to it. Then I could have two usable single bladed paddles instead of just one unusable double bladed paddle.
The double cut in half on a bandsaw. The half on the right already has its extension glued to it. 

And here, a close-up of the sliced portion of the paddle.
Soon as my paddle transformation is complete, I will report on the performance of these paddles.
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Jumat, 01 Juli 2016

Fire Good Fire Bad and Whatever Happened to Pyrodiversity


I recently bought a book called California Indians and Their Environment. California Indians unlike most of the other Indians in what is now the US had never developed any agricultural technologies.  Instead, California Indians made their living exclusively off plants growing wild in their environment.  However, Indians managed their environment by burning practices that encouraged their food and medicinal plants to thrive.
Enter the Europeans.
Fire, an environmental management tool for the Indians was a threat to property for the Europeans.  The use of fires intentionally set  by the Indians, what are now called prescribed fires was outlawed by the Europeans. I imagine that the dwellings of Indians were subject to fire damage just like the dwellings of the Europeans but given  that the Indians set fires to manage the vegetation in their territory did not build dwellings where they would get burned down.  In addition, Indian dwelling may have been more temporary or movable and therefore more disposable or more easily relocated if a prescribed burn was called for.
I have never seen the reasons for antipathy to fire spelled out anywhere in text, but the idea that fire is bad seems almost self evident probably at least in part because of a massive public relations campaign by the department of Agriculture.  The appeals were mostly emotional and aimed at a population that probably had very little contact with forests on a day to day basis. The reasons for preventing forest fires are primarily economical and have little to do with ecological concerns.  Fire is a natural phenomenon and ecosystems have adapted to fire and in many cases depend on fire to keep the ecosystem in balance.  Not so in National Forests managed by the Department of Agriculture.  National forests produce lumber.  The lumber is sold to lumber companies and the Department of Agriculture collects money when the trees are cut down.  Trees that go up in smoke dont produce any revenue and whether by training or by natural disposition, most people, myself included dont like the look of burned over forest. 
The National Park people on the other hand dont sell any lumber and so they can afford to let forest fires burn.  No revenues are lost as a consequence.  Perhaps park attendance goes down during a forest fire but quickly picks up again afterward.  National parks even do prescribed burns since some trees like the giant Sequoias dont reproduce unless the ground is burned over.
But back to the Department of Agriculture anti fire campaign.  While the motivation to prevent forest fires was primarily financial, the advertising campaign instead focused on the fact that forest fires could potentially kill cute baby deer and bears, and so Smokey the Bear was created.
OK, so fire wastes resources, not to mention displacing or possibly orphaning young deer.
Heres the orphaned deer theme again.  no mention of wasted resources this time.
And again, this time, who knows, might be Smokeys nephew thats getting bandaged up there.  Smokey wants to know WHY?
This time, no orphaned animals, but the implication is clearly that those two cubs would be in a heap of trouble if there were to be a fire.  Smokey meanwhile is taking a break from shoveling dirt on top of camp fires to read a fan letter.  In the background, city dwellers recreate on a lake in the woods at a forest service campground in an environment of statuesque ponderosas unmarred by fire.
And for the children, a reminder that theres lots of critters that would be indisposed by forest fires, the advertising campaign bleeding out into the culture at large via childrens books.
And finally, WWII poster.  Needs an update there with Putin and Osama.









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Selasa, 10 Mei 2016

Back to work

With the successful launch of Perseverance last weekend at G9 behind me, its time to get back to work on getting the little boat finished.

Yesterday, I applied the 2nd coat of epoxy to the center third of the interior, as well as the remaining length of the sheers. This area is now ready to be painted.


This area between frames #1 and #2 is ready to be painted.
The aft third of the interior still needs a 2nd coat of epoxy.
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