
Title: โTime is a phenomenal puzzle…(Clock and Art Puzzle)โ
Artist: Michael Autumn
Medium: Oak wood clock face and plywood hands. Working clock movement.
Size: 95cm (W) x 95cm (H)
Edition: 11 (only made to order)
Authenticity: Hand-engraved (bottom, center of main central piece).
Date: 03/2025
This is an artwork primarily about time โ that eternal puzzle in human minds – mine included – and what better way to depict time than by a clockโฆ? However, during my journey in creating this piece I realised that it is also about gravity โ because without gravity this clock would simply fall apart โ because there is nothing else holding it togetherโฆ! And this ties in nicely with Einsteinโs Theory of Relativity โ where gravity deflects time (gravitational time dilation) in what is known as โspacetimeโโฆ
But this is not a normal clock (as you might expect from me!?): it is in fact two puzzles โ and it was quite a technical challenge or puzzle to design and make both of themโฆ! There is nothing holding the clock face or clock hands jigsaw pieces together – other than gravity โ i.e. their own weight. There is no glue, screws, or nails โ all the pieces are gravity-defying wooden joints!

I vary the depth of some pieces to make them stand out…
The clock face is a large (950mm or 37 ยฝ โ diameter) thick circular wooden jigsaw puzzle โ where all the pieces are solid oak โ about 32mm (1 ยผ โ) thick. The clock hands are very strong but light plywood jigsaw puzzle pieces 3mm (about an โ โ) thick โ spelling out the words โhourโ and โminuteโ. They have a steampunk motif engraving of cogs, wheels, springs, shafts, and screws โ as if they were word-shaped windows revealing the inner workings of the clock inside.

I designed and made the puzzle clock face about three years ago (December 2021) (albeit a โsmallโ one โ about 500mm โ 20โ โ in diameter), but I couldnโt think of a design I was happy with for the clock hands. This proved really difficult because I wanted the clock hands to be puzzles in themselves โ so the pieces had to reliably and tightly fit together โ each as a rigid unit, be fully rotatable, and fit securely on a conventional working clock movement. The latter was an interesting technical challenge, but I really struggled with a suitable aesthetic design for them. What would look appropriate or conforming with the theme of a time puzzle? What would look aesthetically pleasing (to me at least!)?
I toyed with several ideas and made prototypes โ most of which failed โ but recently I came up with the idea of a steampunk motif on the words โhourโ and โminuteโ โ and I figured out how to make them into actual jigsaw puzzle pieces. It involved the use of an extremely precise laser (you could be forgiven for thinking all lasers were equally precise, but that would be very wrongโฆ), choosing extremely flat, strong, very light, and knife-edge-holding, material – with very careful preparation and handling. The hands have been dyed โ not stained or painted โ to give good contrast with each other and the clock face.

The final artwork has been 95% made by hand, my hands, using the best tools at every stage (as the making-video shows). Iโm very pleased to reference, and hope to provoke thought into, two fundamental and very puzzling concepts in physics and philosophy โ time and gravityโฆ
Why are some of the numbers missing on my clock face?
The keen-eyed amongst you might notice that the only numbers Iโve used are prime numbers. Having a penchant for prime numbers, when designing the clock face, I felt that putting on all the numbers – one to twelve – would make it look too crowded. Also, my goal was to design a clock puzzle โ i.e. with interlocking puzzle pieces. Interlocking puzzle pieces are where two or more distinct puzzle pieces structurally hold together โ and each piece connects with two or more other distinct puzzle pieces.
It is surely a coincidence that whoever came up with the shape of the Hindu-Arabic numbers we use today, all the single-digit prime numbers have no holes โ or negative spaces – in them, whereas the non-prime numbers have holes. This means that the non-prime numbers โ 4, 6, 8, and 9 โ cannot be single, whole, puzzle pieces. They are two or more pieces โ with one or more smaller (hole) pieces fully enclosed. These โholeโ pieces โ or negative spaces – are attachable to only one other piece โ the positive space of the enclosing main digit shape – whereas the prime single digit numbers are all simple single puzzle piecesโฆ
The negative spaces of the even numbers do not meet the criterion of a puzzle piece – each piece connects with two or more other distinct puzzle pieces – and were excluded from the design.
This clockface design is using only prime numbers because it is a proper structural puzzle โ all the pieces meet the criteria of proper puzzle pieces โ and, most importantly, this appeals to my aesthetic and numerophile senses (in fact I did originally call this artwork โPrime Jigsaw Clockโ, but later changed my mind). A clock face is so familiar to modern people that numbers are not strictly necessary โ and many clockface designs have no numbers at all. So, to be provided with six very special prime numbers, is six more than strictly necessary โ and adds to the mystique of what this clock is all aboutโฆ















































































































