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The Impossible #2: Mission Impossible

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Blog entry by BritBoxmaker posted 1532 days ago 3234 reads 4 times favorited 35 comments Add to Favorites Watch
« Part 1: Escher Vibe Part 2 of The Impossible series Part 3: MI-2 »

I’ve accepted the mission and the secretary has already dissavowed all knowledge of me (for all you MI fans).
Armed with my plans and two sticks of wood (one Sycamore, 50mm square. One Purpleheart, slightly bigger) I enter the arena of ‘The Impossible’. I feel someone is watching me. Is it the ghost of the great M.C.Escher or has the medication worn off already? No its you lot. Quiet at the back. ThreeSpeed, the mad professor is about to start. Here is where we begin

Plan 1 – How many pieces to this jigsaw puzzle

Plan 2 – Dimensions. There are only two to this pattern although you may see three. Seriously I’m not working to ten decimal places. Looks impressive though

‘Yes but why such big pieces of wood?’ I hear you ask ‘The dimensions on plan 2 are tiny’. Well in order to make the size of the pieces as accurate and similar as possible you cut and glue up big slices. Then you cut them into smaller, same size, lengths from this ‘blank’, later. You’ll see, I promise.

Suffice to say at this size (50mm square) I estimate I can comfortably get 25 pieces from each blank. I need 78×42mm pieces of Sycamore and Purpleheart for the rods at the top of the diagram below. That means four x 30mm long pieces of Sycamore and twice as many four and eight mil’ slices of Purpleheart.

All this at an angle of 60 degrees. See below

The jig is clamped to the mitre fence, set at 30 degrees. To the left you will see a setable end stop. After cutting off the end of the Sycamore this stop is set to 30mm and five slices cut (one is my ace in the hole, I always screw one of them up). The process is then repeated with the Purpleheart with the stop set at 8mm, however this time I cut ten slices. I realise five of these only need to be 4mm long. I’ll resize that end of the blank, when its completed, to reflect this. Each blank will look like this, when glued up

Note the grain directions of the Purpleheart. For the individual parts of the big cube sides (as they appear in 3D) to make passable images of faces this is how it needs to be.

I’ll glue up five in a row, comme ca

with no glue between the two adjacent purpleheart pieces to keep five seperate blanks,but first I need to go and make a clamping jig for that and precision sand the thickness of the sycamore on the drum sander. I couldn’t have attempted this project without it or my glue-up experience with the Snakes cutting board.l

Are you with me so far? There will be questions at the end!

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



35 comments so far

View BritBoxmaker's profile

BritBoxmaker

4354 posts in 1661 days


#1 posted 1532 days ago

Sorry for the partial posting, finger trouble. Its ready now!

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

View tyskkvinna's profile

tyskkvinna

1308 posts in 1611 days


#2 posted 1532 days ago

heeehee I love your commentary style :D

-- Lis - Michigan - http://www.missmooseart.com - https://www.etsy.com/people/lisbokt

View NewPickeringWdWrkr's profile

NewPickeringWdWrkr

338 posts in 1638 days


#3 posted 1532 days ago

Definitely ambitious Martyn, but if you pull this off, you’ll have a masterpiece that’ll be the envy of many a LumberJock!

-- Mike - Antero's Urban Wood Designs http://anterosurbanwooddesigns.com

View SPalm's profile

SPalm

4783 posts in 2507 days


#4 posted 1532 days ago

I’m with you. Whether you want me or not.

6.9282032000 and counting.

Steve

-- -- I'm no rocket surgeon

View BritBoxmaker's profile

BritBoxmaker

4354 posts in 1661 days


#5 posted 1532 days ago

To you, Steve, 6.93 if I can achieve the second decimal place. If not 6.9mm. Don’t get peevie on me though or I’ll get my shitty stick (not shown in the pics) out to beat you with. lol

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

View BarbS's profile

BarbS

2433 posts in 2711 days


#6 posted 1532 days ago

(Staying quiet in the back) Don’t want no shitty stick.

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

View Mary Anne's profile

Mary Anne

1057 posts in 1834 days


#7 posted 1532 days ago

Mmmmm hmmmmm!!
As an experienced plumber, I know to keep my mouth shut when someone is waving a shitty stick.

View BritBoxmaker's profile

BritBoxmaker

4354 posts in 1661 days


#8 posted 1532 days ago

Worked on me when I was a kid. The threat not actual beating. Perhaps it should have stayed. Hmmmmmmm

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

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1740 days


#9 posted 1532 days ago

I´m a lazy backrow student thats shout all the stupid comments
but if you have a shitty stick
I leive the classroom and put up a camera instead I think that wuold be safer for me
now I will watch you from my comfortable sofa enjoying a single malt
while I wait excided to see your next instaltment proffesor

Dennis

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a1Jim

112010 posts in 2202 days


#10 posted 1532 days ago

I’m thrilled and amazed again keep on.

-- http://artisticwoodstudio.com Custom furniture

View BritBoxmaker's profile

BritBoxmaker

4354 posts in 1661 days


#11 posted 1532 days ago

Dennis. Ever the sensible man. I wish I could enjoy a single malt with you. Have one for me. You deserve it after sitting through that lecture.

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

View stefang's profile

stefang

12872 posts in 1959 days


#12 posted 1532 days ago

You lost me at the blog title Martyn, but please continue. If I eventually want one I will simply order it from you, assuming of course that they have a woodworking shop in whatever mental health institution you will be residing in at the time.

-- Mike, an American living in Norway.

View BritBoxmaker's profile

BritBoxmaker

4354 posts in 1661 days


#13 posted 1532 days ago

Mike, LMAO

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

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BritBoxmaker

4354 posts in 1661 days


#14 posted 1532 days ago

The thing I like about this place is that you can do your own thing, however low or highbrow, and nobody digs at you, its really relaxed but you can have fun joshing about at the same time. Its brilliant!

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

View jm82435's profile

jm82435

1260 posts in 2367 days


#15 posted 1531 days ago

Keep it coming Professor 3Spd.
These are little pieces already. To think you still have a couple of more milling operations to do on each of these is unnerving. Be safe my friend.

-- A thing of beauty is a joy forever...

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