Penrose Triangle Expandable Trivet

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Project by Elyasaf Shweka posted 01-08-2015 11:42 PM 8797 views 72 times favorited 12 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’

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

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

12 comments so far

View exelectrician's profile


2327 posts in 2390 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


4790 posts in 3092 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


5317 posts in 3845 days

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

The video does it justice – great job.


-- -- I'm no rocket surgeon

View Marty 529's profile

Marty 529

344 posts in 1683 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


462 posts in 1228 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


3405 posts in 3147 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


480 posts in 1622 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


14 posts in 1319 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


3166 posts in 2984 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


7735 posts in 1970 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


8 posts in 1574 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


1 post in 1007 days

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

Fantastic trivet! Where could get a set of plans

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