The Rings - Phase II
- Do They Fit?
Well, here is Part II
of this aggrevation and misery.
My mother always thought
I was a Quick Learner. So, the Bright Bulb I am, I thought, "Before I
whittle out another 42 segments and 7 more rings, why not see if this one
So, I bolted three together.
By butting them end to end and holding them together with a plywood piece.
Measuring across the face,
end to end, I got 98+ inches. Hmmm 96.5" is what I planned.
That means, the ends are
not the right angle, and I would end up with a football shaped ring after
I joined two halves together.
Okay, gots to do it betterer
After some careful thinking
and the resultant stress and headache, I figgered if I stacked rings on top
of their buddies, no matter what the end was doing, the arc would be constant.
ie: The joint where one segment butts to another, would be determined by the
radius, not the angle of the end cut.
So, here is a stack of
rings and I will see how far off the ends are.
I also made a jig to rest
the segment against and by refining this whole thing, I could make the end
cut, very very good indeed. I used one of the trims/drops when I cut the first
Lined up the edge to the
cut in the mitre guage.
Since the plywood was
four feet across, and twenty four inches to the center, I lined up the "jig"
to be twenty four inches from the blade.
I marked the Top Side
of those segments I was working with so not to confuse my PeeWeeBrain "Who's
When I cut the other end,
I made a knife mark where the cut would start. You can barely see it here.
After all that, I again
screwed them together with some 1/2" ply scrap and whupped the dome over
and flopped the ring inside the dome.
Would it go in?
How sloppy was the fit?
Am I crazy?
Why, Do I need these toys?
Yes it went in. So far
And yes, as planned, the
gap between the ring and the domer was roughly 1/4" or so. Good enough
(42) to go ...
Moon and Half Dome, Yosemite
National Park, California, 1960
(c) Ansel Adams
Moon and ExploraDome,
(c) Jon Dokken
Okay, so which one is
better? More exciting? Better Technically?
How much do you need to
(To Be Continued)