LumberJocks

Penrose Triangle Expandable Trivet

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Project by Elyasaf Shweka posted 01-08-2015 11:42 PM 16739 views 76 times favorited 14 comments Add to Favorites Watch

Maple, Oak and Mahogany. Partially finished with spray lacquer (full finish would interfere with the mechanism)

This is my version for a project published by Toughcut recently – ‘Expandable Trivets’ http://lumberjocks.com/projects/112297

I made several trivets based on his design, but i found it very similar to the famous 'Penrose Triangle’, which is an impossible object. So i made a few minor changes with the design, and this is the result.
A picture of a jig I made to assist with gluing is attached.
I added a video that shows the simple but brilliant mechanism at work.


View on YouTube

https://www.youtube.com/watch?v=yqX5lT4CIB4&list=UUC4c7YfwIvFGVnPwBE7JbFw

-- Only by the 4th time I realized how it was suppose to be done in the first place.





14 comments so far

View exelectrician's profile

exelectrician

2339 posts in 3343 days


#1 posted 01-09-2015 01:21 AM

Very handy, one size fit all hot pots…

-- Love thy neighbour as thyself

View sras's profile

sras

5650 posts in 4045 days


#2 posted 01-09-2015 11:07 AM

Nice! The video does a great job of showing how this works.

-- Steve - Impatience is Expensive

View SPalm's profile

SPalm

5336 posts in 4797 days


#3 posted 01-09-2015 01:59 PM

Neat.
The video does it justice – great job.

Steve

-- -- I'm no rocket surgeon

View Marty 529's profile

Marty 529

344 posts in 2635 days


#4 posted 01-09-2015 02:09 PM

This is pretty cool. The video does help to see how it works. I’ll have to put that on my list of things to try one of these days. Nice job.

-- Marty, Ohio

View PhillipRCW's profile

PhillipRCW

517 posts in 2180 days


#5 posted 01-09-2015 04:34 PM

I would love to take a shot at making these.

-- Phillip- Measure twice, cut onc.... Hey look, it's rustic.

View bobasaurus's profile

bobasaurus

3707 posts in 4099 days


#6 posted 01-09-2015 05:04 PM

That is a very clever design, nice job. Might have to make one someday.

-- Allen, Colorado (Instagram @bobasaurus_woodworking)

View AJ1104's profile

AJ1104

1153 posts in 2575 days


#7 posted 01-09-2015 05:30 PM

Cool. Very cool. Thanks for the video! It puts this project over the top.

-- AJ

View GpaBrian's profile

GpaBrian

14 posts in 2271 days


#8 posted 01-09-2015 06:40 PM

Neat idea, video is a great help to show how it works.

View Hawaiilad's profile

Hawaiilad

3375 posts in 3936 days


#9 posted 01-09-2015 08:16 PM

Really Great. Perhaps one of these days I can get my head around and understand just how these are built.

-- Larry in Hawaii,

View JoeinGa's profile

JoeinGa

7741 posts in 2922 days


#10 posted 01-09-2015 08:49 PM

Thanks for the video! It really DID make it clear how this thing works!
And here I thought the 3 triangles somehow twisted or “un-curled” to open.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

View flatscat's profile

flatscat

8 posts in 2526 days


#11 posted 01-15-2015 06:57 PM

I really like this trivet. I will make some myself if I figure out how.

View Woodclown's profile

Woodclown

1 post in 1960 days


#12 posted 07-18-2015 10:25 AM

Fantastic trivet! Where could get a set of plans

View Viper007's profile

Viper007

1 post in 701 days


#13 posted 12-27-2018 10:38 AM

I would really like to try this project; could you provide me with any measurements or pdf assistance? Thanks you.

View Crock74's profile

Crock74

5 posts in 691 days


#14 posted 01-06-2019 02:10 PM

This is a great design. Will try one soon. Thanks

-- TomT, McKinney

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