A Laser Plagiarised “TRIVET”

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Project by LittleBlackDuck posted 12-03-2020 12:21 AM 685 views 2 times favorited 21 comments Add to Favorites Watch

Boys and Girls,

Yet another victim of this C19 albatross (sorry to all the albatrosses reading this). Because of the lockup, I have been spending an inordinate amount of time sitting on my rrrs without moving and playing a video game to the point that my ankles were swelling and I was trepidated by the thought of DVT.

Consequently I was forced off my arse and made a pilgrimage to the workshop.

Having made noises about a Trivet under the guise of Wild Woodworking School 2.0 by wildwoodbybrianjohns and hassled lazyman as he dared to make a comment, armed with measurements and the desire for neater crankles, I was determined to make another addition to my menagerie of puzzles (I consider it more a puzzle than whatever a trivet is used for).

Now that I have dispensed with the above bullshit, I can get down to the nitty-gritties of my plagiarism of the Trivet.

Starting with lazy’s SketchUp model, I took a few liberties and jazzed it up for my laser cut MDF lamination technique.

sensible metric measurements,

and inane imperial for the wretches,

If you can’t read it and are interested in the measurements, you can find it here in the PDF.
Rather than use normal dowels, I opted for pointy dowels. Not being able to purchase any from all our reputable timber suppliers, I decided to make some myself out of 9mm MDF. My laser beam struggles with the 9mm thickness, however, a centrefold of a naked sun spurred it into success.

Naturally the laser went into production,

I opted to try the puzzle as a single layered 6mm MDF assembly.
Each puzzle requires 6 of the same sized/shaped piece, where one piece is flipped and two are glued together making 3 separate items,

making 3 parts,

Back to the star of the show, which was ebony wood filler filled,

Just don’t glue the buggers the wrong way…

bugger! Lucky I hadn’t wasted filling it before discovering the oopsie. Good view of my pointy dowels in use.

After making the single layer, I found it a tad poopsie so decided to beef it up with a double lamination (King Oscar sardines… two layers),

Bottomed out with one of the alignment dowels so it couldn’t be filler filled,

A quick trip to the drill press fixed it up.

Then it was a case of mass production after reducing the size from 6” to 60mm,

Even tried one without dowel alignment… with super glue it wasn’t hard to wait till it dried without slippage,

If making a puzzle for someone or just getting them to solve, I recommend that it gets dis-assembled before handover as if the user disassembles it, they may get a good clue of how to assemble it,

The secret to assembling it is to get the 3 pieces,

align them,

till there is a neat triangle in the middle,

Then it should be a simple case of squeezing the 3 pieces together simultaneously.

Another contribution to the collection,

Just for the hell of it, I made a video, if only to prove my production skill have not improved.

If you don’t have a laser or CNC, then it may not be worthwhile reading this blog…

-- If your first cut is too short... Take the second cut from the longer end... LBD

21 comments so far

View woodbutcherbynight's profile


7320 posts in 3385 days

#1 posted 12-03-2020 12:43 AM

Very cool!!

-- Live to tell the stories, they sound better that way.

View bushmaster's profile


4099 posts in 3258 days

#2 posted 12-03-2020 12:48 AM

vVery interesting to me as \i have never seen or used one of those machines, and \i certainly can’t make one out of my scrap metal pile.

-- Brian - Hazelton, British Columbia

View therealSteveN's profile


7013 posts in 1550 days

#3 posted 12-03-2020 05:20 AM

“Yet another victim of this C19 albatross (sorry to all the albatrosses reading this). Because of the lockup, I have been spending an inordinate amount of time sitting on my rrrs without moving and playing a video game to the point that my ankles were swelling and I was trepidated by the thought of DVT.”

Can the video stuff. You’ll become a stump sitting in front of the computer, go to get up, and find you cannot. Keep moving. Who else is gonna write such amusing entries.

When I saw the pic with all the stars, my first thought was Duck can make a bunch of cool American flags…....

Nice work.

-- Think safe, be safe

View Ivan's profile


16529 posts in 3843 days

#4 posted 12-03-2020 05:48 AM

They are realy unique and cool looking!

-- Ivan, Croatia, Wooddicted

View mel52's profile


1863 posts in 1240 days

#5 posted 12-03-2020 05:53 AM

Sharp looking, I haven’t seen anything quite like them before. Excellent job !!! Mel

-- MEL, Kansas

View wildwoodbybrianjohns's profile


2425 posts in 523 days

#6 posted 12-03-2020 07:09 AM

Thats an excellent project write-up for those who will follow, ya know, posterity. Also, this is an excellent something-to-do project for those who are posterially reclined.

-- Wildwood by Brian Johns: The Big Bang: Nothing - exploded into Everything. Thanks to Nothing.

View Dutchy's profile


3960 posts in 3144 days

#7 posted 12-03-2020 07:25 AM

Nice Alex. This puzzle looks so simple to solve, but I suppose the opposite is a fact? I was wondering if you normally do your SU drawings in inches?


View crowie's profile


4235 posts in 2927 days

#8 posted 12-03-2020 09:14 AM

You’re one clever duck with some damn fine machinery, and more impressive, you not only know how to but use them to your enjoyment.

-- Lifes good, Enjoy each new day...... Cheers from "On Top DownUnder" Crowie

View robscastle's profile


7666 posts in 3180 days

#9 posted 12-03-2020 09:16 AM

Trivet trivet …? is that a frog with Laryngitis

Maybe a friend of the dog with a hair lip that goes … Mark mark!

For a duck you can certainly waddle about and produce some impressive ducklings I tell you.

I am going to suggest to the guys at Parkes we get a star named after you .. wait lets not muck about how about 27 of them,... bloody Pluto Pup gets a guernsey so why not you, ... and a dark star or two (27) in the universe to remember you by when the day comes to drift of into the unknown ….BTW who is getting your ride on?

I have some cane toads to train they are getting a bit too smart with Victa as soon as it starts up they are alerted!

-- Regards Rob

View Peteybadboy's profile


2870 posts in 2925 days

#10 posted 12-03-2020 10:48 AM

Way too much to comprehend at 5:30 am and have not finished my coffee. But it looks cool.

-- Petey

View Rich1955's profile


300 posts in 366 days

#11 posted 12-03-2020 02:15 PM

This looks cool!

-- Rich

View splintergroup's profile


4426 posts in 2198 days

#12 posted 12-03-2020 04:30 PM

Even though I don’t have the drone downing laser I still love to read the madness in your process 8^)

Wether it’s sharks, sea bass or even ducks with lasers, something cool can happen!

View Lazyman's profile


6393 posts in 2363 days

#13 posted 12-03-2020 04:54 PM

Nicely done. I even watched the video all the way through! With your shout-out, I am now world famous. From now on I will refer to myself as the world famous Lazyman.

Now I am going to have to figure out how to do this on my CNC machine. Don’t really need to, since it’s pretty easy the manual way, but I have to now. It should be just a matter of making the interior 60° corner and the matching tip that fits in there have a radius matching the size of the router bit. Sketchup does not make drawing fillets very easy at least with my limited experience with it anyway.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View torus's profile


518 posts in 1389 days

#14 posted 12-03-2020 06:18 PM

Cool project!
Can you update sizes for a small version? Thanks!

-- "It's getting better..." - put this on my RIP stone!

View LittleBlackDuck's profile


6206 posts in 1796 days

#15 posted 12-04-2020 12:12 AM

Thanks all for taking the time to read and sacrificing precious life-line for commenting.

rc, Pluto belongs to Mickey and without stating the obvious, the duck answers to no one… even SWMBO after my teeth get knocked out!

Dutchy, without that magical “triangle” (circled) in the centre, it’s practically impossible to solve… unless you dismantle it yourself.

lazy, I believe there is a way to convert SketchUp models for CNC use. I don’t have a CNC and hate reading, so you’ll have to do the RTFMing. I appreciate that not everyone has a laser in their spare bedroom, however, more and more have access to CNC’s (if not owning one) and that’s why I keep posting my laser based projects.

Even though I don t have the drone downing laser…
- splintergroup

Hunt drones with a slingshot or cross bow… then hide and lie when you hear the ambulance that come to treat neighbours from sky debris injury cause you can’t aim well.

..... Can you update sizes for a small version? Thanks!
- torus

Did a Google on trivets and the missus commandeered one as an “expandable coaster” for the dining table. I tried to tell her it’s a puzzle not a kitchen thing, but SWMBOs are just that!. A smaller one would only suit an egg holder.

However, if like me, you insist it’s a puzzle, here are the dimensions of my reduced version based on 60mm lengths,

(you’ll notice the imperial is somewhat crazy dimensions… use a metric rule),
That’s about 1/3 the size… Just remember not to reduce the angles to 1/3 otherwise you’ll finish up with a crappy/impossible model.
I have also uploaded the new measurements to the cloud… look for the 60mm PDF.

If you’re familiar with SU, you can resize it to whatever dimension you like (updated models available in the above link).

Also a heap more puzzles available one level up.

Imperial measurements rounded up on small item,

-- If your first cut is too short... Take the second cut from the longer end... LBD

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