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The Impossible #4: One of these days (I'm going to cut you into little pieces)

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Blog entry by BritBoxmaker posted 06-14-2010 07:20 PM 3131 reads 4 times favorited 34 comments Add to Favorites Watch
« Part 3: MI-2 Part 4 of The Impossible series Part 5: Fearless »

Not a threat. A lyric from an early Pink Floyd album. But I am going to do it, to the blanks. There’s some trig. in this part of the blog. If you don’t know Trigonometry youll just have to trust me. First this is what came out of the glue-up.

Now I’d pre thicknessed both the Sycamore and the purpleheart on the side which will be triangle shaped before gluing up so all I have to do now is thickness the other side, to 4mm. I do this by trimming the end off in the table saw then precision sanding it to size. The overall length of the rod piece is 42mm (8mm Purpleheart, 30mm Sycamore and 4mm Purpleheart). This is an opposing corner to corner measurement and as the blank is a rhomboid (lozenge, call it what you want) cut at 60° If I now thickness the blank to 36.37mm (42 x sin 60°) the thin side should be correct. Like so

I tidied up the sticky out edges of the purpleheart and then cut the blanks into slices, so

and so

of which I’ll use the 20 best to cut up in the other direction and shape to produce 78 of these

Which when mirrored produce 42 of these (are you watching Barbs?)

I shaped the triangle end on the disc sander before I cut the new slice up into 5 pieces. This was a trial and so I didn’t use one of the good ones hence a few ends fell off but I think you can start to see how the pattern will be made up and how all the grain directions match (important that as I said before, to maintain the illusion of cube faces, if my cutting is up to scratch)

Lots of work shaping and slicing to do now so it may be a while till the next part. Please bear with me. As I said if it don’t work you can all have a bloody good laugh. I know the final glue-up will be comical, fo me that is.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com



34 comments so far

View bunkie's profile

bunkie

411 posts in 1894 days


#1 posted 06-14-2010 07:39 PM

Triangles and parallelograms and tesselations, oh my!

Nice work!

Meddle (from which OOTDIGTCYILP is the opening track), in my opinion, the best Pink Floyd album.

-- Altruism is, ultimately, self-serving

View SPalm's profile

SPalm

4935 posts in 2629 days


#2 posted 06-14-2010 07:40 PM

Sweet. That will be a good glue up. Yikes.

Trig:
Oscar Had A Hairy Old A** = SCT
That little saying has saved me several times.

Love your work. You are so gal dang precise.

Your student,
Steve

-- -- I'm no rocket surgeon

View David Craig's profile

David Craig

2135 posts in 1856 days


#3 posted 06-14-2010 07:45 PM

I will trust you on the Trig Martyn. I am a bit of an oxymoron in the math area because I love geometrical shapes but did not push myself enough in school to take on the advanced math classes. I do see where each piece of the puzzle is composed of 2 1/2 Rhomboids. Trying to imagine lining everything up so that the grain patterns match hurts my brain only a little less than reading Stephen Hawking’s A Brief History of Time. :)

David

-- There is little that is simple when it comes to making a simple box.

View BarbS's profile

BarbS

2434 posts in 2833 days


#4 posted 06-14-2010 07:45 PM

Yes, I stood up in the back row to look over everyone’s head to see clearly.

-- http://barbsid.blogspot.com/

View BritBoxmaker's profile

BritBoxmaker

4446 posts in 1784 days


#5 posted 06-14-2010 07:45 PM

Steve, for this one I feel you need to be, precise that is. Its a real b*gger as my old maths teacher would say.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View BritBoxmaker's profile

BritBoxmaker

4446 posts in 1784 days


#6 posted 06-14-2010 07:47 PM

David. I never finished reading A Brief History of Time, did the black hole do it?

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View David Craig's profile

David Craig

2135 posts in 1856 days


#7 posted 06-14-2010 08:16 PM

I got to chapter five and when I started reading about spin 1/2 particles where the object has to rotate in 2 full 360 degree rotations in order to appear in the same state, I had to lay down and could not pick up the book again. Your latest project made me think of those particles and I had this brief picture of you creating a spin 1/2 particle cutting board :) It gave me a chuckle.

David

-- There is little that is simple when it comes to making a simple box.

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1863 days


#8 posted 06-14-2010 08:22 PM

sorry but the way you lay the pattern in the last picture
it seems to me the triangles is little too big, or you just lost me
I thought I got when I saw jm82435 comment with picture
in the last blog , but now ????
well I gess it will solve itself further down the road
great toturial as ususal from you Dr. # speed

take care
Dennis

View Bearpie's profile

Bearpie

2592 posts in 1766 days


#9 posted 06-14-2010 08:23 PM

WOW, for a complicated looking board you use only a few pieces aligning all the grains in their proper order and lots of patience, time, precision and glue! I am IMPRESSED and still watching and following.

I’m still working on that plan in my mind and have partially transferred it to paper and have to work the kinks out. I still have to select what woods I’m going to use that will compliment and clash with each other. My choices so far: purple heart, maple, walnut? I’m thinking that one might not be hard enough?

Erwin, Jacksonville, FL

-- Erwin, Jacksonville, FL

View HighRockWoodworking's profile

HighRockWoodworking

182 posts in 1727 days


#10 posted 06-14-2010 08:50 PM

Looking great Martyn! Look forward to seeing the rest.

-- Chris Adkins, http://highrockwoodworking.com/

View a1Jim's profile

a1Jim

112883 posts in 2325 days


#11 posted 06-14-2010 09:24 PM

An outstanding blog as usual very well done Martyn

-- http://artisticwoodstudio.com Custom furniture

View Cozmo35's profile

Cozmo35

2199 posts in 1783 days


#12 posted 06-14-2010 09:34 PM

Martyn,

“I’m going to cut you into little pieces”, isn’t that from “One of These Days” the opening track from Pink Floyd’s 1971 album Meddle? Glad to know a fellow Floyd Fan! LOL!

AWESOME blog!

-- If you don't work, you don't eat!.....Garland, TX

View BritBoxmaker's profile

BritBoxmaker

4446 posts in 1784 days


#13 posted 06-14-2010 09:36 PM

Yes, Cozmo, it is. I saw them live in London, in 1973, doing this set.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View BritBoxmaker's profile

BritBoxmaker

4446 posts in 1784 days


#14 posted 06-14-2010 09:41 PM

Deleted

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View Tony Strupulis's profile

Tony Strupulis

240 posts in 1871 days


#15 posted 06-14-2010 09:45 PM

Nice Meddle reference. I saw them around ‘95. I believe the did play “One of These Days”. It was the first time in many years that they played Dark Side of the Moon in it’s entirety. The best concert I’ve ever been to.

-- Tony - http://ravensedgetoolworks.com

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