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Archive for February, 2009

Feb 27 2009

Feb 2009 Wind

Published by John under Weather

Click to Enlarge
Click to Enlarge

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Feb 20 2009

The Space Between

Published by John under Astronomy

We generally think of space as emptiness and quite readily ignore it, jumping from sphere to cosmic sphere… but the space between the obvious objects in the universe is the same, exactly the same, as the space between our thoughts… or the space between the notes that makes the music (Claude Debussy)… or the space between our atomic structure.

Mrs CrabtreeWe learned very early on, in English classes of all places, that Thoughts (ideas) are things. But it is being conscience of the space between them that differentiates us from the other mammals. If you say something negative to me, I can choose to be offended and react violently or I can choose relative indifference and accept your opinion as yours. My decision is “in the gap between the thoughts”, where other animals instinctively react.

Solid EvidenceIf the above example seems to “airy” or “pseudo-scientific” for you, let’s take something solid in our observable surroundings, say a block of lead. We’ll all agree that although it “looks” solid, it is been repeatedly shown through the Scientific Method to be a mass of moving molecules with space between them. Continue Reading »

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Feb 11 2009

Router Table

Published by John under Tools

We had decided last year that when it started to get too cold to work outside that we’d get some of the interior work done in the house. Even though we’re still watering the trees because it’s been so warm & dry, we decided that it’s time to replace the painted interior finger-jointed trim with some nice, stained wood molding.

Of course you know this means I want to make the molding ;) but I’ll need a router bit with a profile that suits Leigh… and I surely don’t want to have to route a house-worths of wood with my hand router. I figure I need a table router:
Step 1.
Remove the baseplate from your hand router and after drilling a hole in the center of the top of an old cabinet for the bit to poke through (and some mounting holes that will match the ones that held the baseplate on), attach the router to the underside of the cabinet top.
Router attached with baseplate removed
Since the cabinet top is thicker than the original baseplate, you’ll probably need longer screws.

Close-up
Close-up.
I also routed out half the thickeness of the cabinet top to allow the bit to poke through plenty.

 

From the top
Don’t mind the writing on the cabinet, it was salvaged from a renovation job. Notice the 3 counter-sunk mounting holes. In this image the angle iron rail for the fence is already attached to the sides. From the top.

Step 2.
The cabinet seems a little low . It would be uncomfortable to have to do all that work hunched-over if I don’t have to. We can solve this by adding some legs.
Cutting some 2″x2″ angle so each leg is 3″ further out at the bottom make the base 6″ wider for stability and adding this 14″ to the bottom puts the working height at ~ 36″.
Raise the cabinet by adding some legs.

 

Step 3.
They say that good fences make good neighbors, but in this case one would also make for a straighter job. As you  noticed in the previous images,  some 2″x 2″ angle has been bolted onto each side of the cabinet, flush with the top. These will be the rails for the fence to slide on. 

After laying the 22″ length of 1.25″ box tube *square* across the top, I welded a 7″ piece of 1″ x 1/4″ to the bottom, crosswise on each end. They slide along the outer edges of the angle to keep the box tube square. Making a fence to guide the work.

 

Now that the fence stays square to the table and is able to slide for different jobs (maybe a little stiff, but that’s better than toulouse, lautrec), we need a way to keep it in place.

This little piece of leftover scrap 1″ x 1/4″ about 4″ long will act as a keeper under the slide. The image shows the fence rolled-over so I can tack weld the keeper to the bottom of the slide.This one's a keeper.

Like this:A little dab'll do ya.

 

In case my terminology isn’t creating the right picutre in your mind, here’s a profile shot of where I am:
The slide is welded crossways to the bottom of the fence. The keeper is tack-welded to the bottom of the slide, creating a groove for the angle-iron rail to run in. The C-clamp is applying slight pressure to the tack-welded keeper to hold it tight to the rail while I weld the keeper solid to the slide.” Fence, slide, keeper and rail.

 

The slide assembly for one side welded solid:
I know my inverted work leaves something to be desired, but I’m a homeowner who has a welder, not a welder who has a home. Slide keeper welded solid

 

Testing for sufficient lockup.
The C-clamp applying slight force on the near side is testing to ensure that the far side sufficiently binds as well. I want to create enough tension with only one fastener to hold the entire fence in place, yet have it freely slide when loosened. Testing 1, 2, 3... Is this thing on?

 

Step 4.
Obviously, the drawers won’t go back in with the router hanging down inside the cabinet. If I were real good, I’d create a faux front door on hinges and attach the drawer faces to it for looks – but I don’t have any matching blue laminate laying around so I’ll just shorten the drawers instead:
Shorten your drawers

 

Step 5.
I won’t call it finished, but it is usable. Extra points to anyone who’s been following along the posts these last few months and noticed that the old workbench made from pallets is gone. These cabinets came out of a doctor’s office and are heavy-heavy. I used the larger ones, the sink base & a solid core door for my new work area. This cabinet  should also serve it’s new purpose well.
Router Table

 

Not shown:

  • Towards the end of the evening when I tested it out, I realized it was going to be a pain to pull the drawers out to adjust the height/depth for different bits. Not an “everyday” matter, but still not convenient so I drilled a hole in one side of the cabinet, made a longer adjusting bolt & added a “T” handle for ease of use.

Still to do (and post):

  • Make an “over center” clamp to hold the fence in place without having to use other tools.
  • Add an electrical outlet to the inside to plug the router into and a switch to the outside of the cabinet.

Since no permanent modifications were made to the router, it’ll take less than 5 minutes to remove it and re-attach the baseplate & adjusting screw for its originally intended hand-use if needed – and I can keep those original parts in one of the small drawers.

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Feb 01 2009

It’s Just a Phase

Published by John under Astronomy

Moon RockThe Full Moon nearest our Autumn equinox (a “Harvest Moon” - not to be confused with the Neil Young early 1990′s album of the same name) is yellow so that the farmers back in the day would have more light for bringing their last crops before Winter.:eek: 

As you’re probably already aware, all Full Moons rise around Sunset, therefore there is no long, dark period before we see them. The main difference between your “Harvest” moon and a regular, run-of-the-mill Full Moon is the time of day between subsequent nightly risings.

Moon risings after an “ordinary” Full Moon are supposedly 50 minutes later each night, but only 30 minutes later each night after our Moon in question. So my original paragraph was only half tongue-in-cheek & has roots in folklore; but Copernicus says it is not the reason “why” and that it’s Earth’s narrower angle of orbit around the Sun (ecliptic) at that time of year that make for the earlier moons that follow this one.

It has been said that this moon is no bigger, brighter or yellower than any other Full Moon, but this is just when people want to notice it. We can compare our upcoming Full Moons to check the validity of that statement by using the table of dates included at the end of this post.

Also of note would be that none of the above applies to peoples of the Southern Hemisphere who experience these Moons during our Spring and it’s difficult to Harvest so soon after a snow. :rolleyes: They must get a “Planters Moon”.

————
Got Moon?
————

I was absolutely blown away by the size of the last Full Moon when it was breaking over the horizon! It seemed to be rivaling for attention against the morning Sunrise.

When la Luna (or any celestial body for that fact) is close to the horizon, we are looking at it through more of our own atmosphere (and consequently more particles) than when it is closer to the meridian. Our atmosphere deflects the bluish-white portion of the light before it can get to our retina while the reddish frequencies of the spectrum get through. It short: It’s our perception.

 

Intermision

 

The Moon may apparently be the largest object in our night sky, but due to Venus’ closer proximity to our Day Star and her permanent layer of sulfuric acid cloud-cover reflecting 60% of the Suns light back into space, I would have to say that she is the brightest object in our night sky. Also, since Celena is so high when I look out my back door around this time, Venus is the first celestial object I lay eyes on, but once in a Blue Moon I’ll catch Orion.

Data from http://www.moonphases.info
Full Moon Times in GMT
Subtract 7 hrs for MST
Feb 9 14:51 Mon
Mar 11 02:40 Wed
Apr 9 14:58 Thu
May 9 04:03 Sat
Jun 7 18:13 Sun
Jul 7 09:23 Tue
Aug 6 00:57 Thu
Sep 4 16:05 Fri
Oct 4 06:11 Sun
Nov 2 19:15 Mon
Dec 2 07:33 Wed
Dec 31 19:15 Thu

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