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the (off center) Bulge

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Project by JL7 posted 12-28-2011 03:34 AM 3584 views 57 times favorited 40 comments Add to Favorites Watch

Thanks to Scott (SASmith) for the inspiration here. This was glued up and set aside during “the coaster project” without considering adding the optical illusion.

Scott’s post was based on this design.

So I was sanding away on this Maple and Walnut end grain board and remembered Scott’s post on the “the bulge”.....

First realization was I have the wrong number of blocks, or more specifically, no center block…...oh well, went for it anyways, thinking that I could cut off a row on 2 sides…....decided to leave it as is…...the off center bulge…...

The last pic shows the mortising machine setup using a homehand router table fence to elevate the workpiece above the fence and other bits that obstruct the full depth of the machine…. At first I clamped every hole but it seemed like time stood still so ended up just eye-balling them and it turned out ok…..

The effect turned out pretty well, better than the photos may show. It seems that the farther away you are the more pronounced the effect…

Photos 1,4 and 5 with mineral oil.

This was a fun one….........thanks again Scott…......

Jeff

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.





40 comments so far

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SASmith

1637 posts in 1738 days


#1 posted 12-28-2011 03:38 AM

Awesome. Thanks for the mention.

I see you went with the book-matched endgrain too.
Did you use 1/4” mortises?
Are those cabinet door bumpers used as feet?
How big is it?

-- Scott Smith, Southern Illinois

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JL7

7483 posts in 1716 days


#2 posted 12-28-2011 03:44 AM

Hey Scott – no problem….you responded so quick it’s as if you were just waiting for the post! :)

Cool design thought – I appreciate…...

Yes 1/4” mortise and the feet are little 3M bumpers I aquired that if you use a shallow forstner bit hole, they will push and lock into place….if that makes sense….?

jeff

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.

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Dusty56

11684 posts in 2439 days


#3 posted 12-28-2011 03:45 AM

It does appear that you have an extra outside row in two directions , but I wouldn’t touch a thing .
It is an awesome illusion , to say the least : )

-- I'm absolutely positive that I couldn't be more uncertain!

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cranesgonewild

344 posts in 1659 days


#4 posted 12-28-2011 03:45 AM

YOU DID IT!!!
After seeing Scott’s as well, I wanted to make this with squares as oppose to circles.
The effect is amazing.
I did notice the offset bulge right away, but it looks so cool, I’ll let this one slide.
What is the overall size?

-- I'm a Fungi --

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a1Jim

112933 posts in 2328 days


#5 posted 12-28-2011 03:48 AM

This board turned out great ,it’s way cool.

-- http://artisticwoodstudio.com Custom furniture

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Betsy

2914 posts in 2647 days


#6 posted 12-28-2011 03:51 AM

Looks good. This is one project on my to-do list.

-- Like a bad penny, I keep coming back!

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Max

55978 posts in 3024 days


#7 posted 12-28-2011 03:52 AM

I really like this board. Wonderful work.

-- Max "Desperado", Salt Lake City, UT

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JL7

7483 posts in 1716 days


#8 posted 12-28-2011 03:59 AM

Overall size is 12-3/4” square, 1-1/4” thick. This is also the maximum my Shop Fox machine will mortise – and the final two holes were made without the depth stop, which sits proud of the two support rods that determine the throat depth….

Thanks for the comments!

Jeff

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.

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nobuckle

1120 posts in 1512 days


#9 posted 12-28-2011 04:04 AM

That does strange things to my eyes. Very cool!

-- Doug - Make an effort to live by the slogan "We try harder"

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Dave

11205 posts in 1591 days


#10 posted 12-28-2011 06:32 AM

Hey Jeff man you had me staring at that thing for a solid 5 minutes. Good stuff. I asked my wife what do you notice about this. She saw the dots were not on all sides but did not notice the center. I like it. I was holding a straight edge up to and going wow they are straight lines.
I would cut my dang finger off if I used it.

-- Superdav "No matter where you go - there you are." http://chiselandforge.com

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JL7

7483 posts in 1716 days


#11 posted 12-28-2011 06:53 AM

Dave – I was pounding the square pegs into the holes and saw the lines bending before my eyes…....It was weird. The drilled holes alone won’t make the effect…it requires the contrast of color…......kinda cool science…...some people make a living figuring this out…...

Jeff

-- Jeff - I have not failed. I've just found 10,002 ways that won't work.

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derosa

1557 posts in 1587 days


#12 posted 12-28-2011 07:51 AM

I have really got to try making one of these, the bulge shows up just fine without having a centerline. Looks great and hurts my eyes.

-- --Rev. Russ in NY-- A posse ad esse

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deon

2241 posts in 1777 days


#13 posted 12-28-2011 09:46 AM

Great work!

-- Dreaming patterns

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deon

2241 posts in 1777 days


#14 posted 12-28-2011 09:49 AM

Great work!

-- Dreaming patterns

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SPalm

4939 posts in 2633 days


#15 posted 12-28-2011 03:18 PM

Yow. That is amazing.
And your routed handhold does not have any router burn. Good job.

Steve

-- -- I'm no rocket surgeon

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