Meet our New MiniMax Spinning Top! See our Maxwell's Dynamical Top posted on Instagram @physicsfun!

FAQ and Info

About Us

The research, design, prototyping and manufacturing of our products is all performed in our Canadian facility.

Engineering and science are what drives us and our philosophy is to perform all work in house to the highest standard possible. We do this for the love of the work, and quality is more important to us than offshore cost savings.

Maxwell's Dynamical Top Info

The top consists of two separate assemblies: a base which is 3 inches in diameter with a column that the top spins on, which is approx. 2.5" high. The second assembly is the actual top which, with the adjusting screws, is approx. 2.5 inches across the ring that holds the adjusting screws and is 3.5 inches high to the top of the axle.

When the top is on the stand, the overall height is just under 5.5" and the total weight is just over 1 pound.

The top and base are made of brass, the axle is brass with a hardened tool steel spin point and tool steel spike on upper end. The stand is also machined brass and has a hardened tool steel cup that the spin point spins in.

We suggest as an option, the glass dome found at:

We added a felt circle to the inside of the dome's base and together with the top, it looks great!

The top is a reproduction of a scientific instrument consisting of small parts, exposed screws that can cause scratches and fairly heavy machined pieces that can cause damage to surfaces if dropped or mishandled. The top itself can easily be knocked off the stand in use and will definitely be damaged by doing so.

It is not a toy and not suitable for children.

Maxwell designed the Dynamical Top as a scientific instrument to demonstrate its rotational motion when not balanced perfectly and spinning on its axis over the centre of mass. Through careful adjustment the top can spin very smoothly but it won't match a one piece top for dead smooth spinning.

The dynamical top consists of 15 pieces that are very carefully machined as precisely as possible, but as with any assembly of parts there are tolerances involved, which will mean that some precession and or nutation will be present when the top spins.

The idea behind the top is to simulate how a spinning massive body like a planet precesses as it spins and orbits. The top simulates this and as the spin axis changes the coloured disk shows on what axis the top is spinning through at any given time.

When the top is spinning and disturbed slightly, the coloured disk will show a progression of colours as the spin axis changes usually cycling red, yellow, green, blue or blue, green, yellow, red depending on how the top is adjusted.

We are working on a PDF and videos that will demonstrate how to use the top and how to make adjustments. Maxwell's paper to the Royal Institution also describes in detail how to adjust the top a copy of which is available here:

Yes, try these out: James Clerk Maxwell foundation which has a video showing an original top in use from the University of Edinburgh:

Dr. Reid from the University of Aberdeen has very good info about Maxwell and the top here:

There is nothing applied to the brass after polishing. Maxwell's original tops show a nice patina as the brass has aged. We are leaving the choice of letting the tops patinate or not to the collector.

If developing a patina is not desirable, the application of conservator's wax will keep the top's shine intact. Conservator's wax is available here:


General Info

Because of the specialized handcrafted nature of our products, we do not offer a return policy. You can contact us here with any questions.

 We ship to Canada and US for a flat shipping fee which includes additional insurance to cover the value of the purchase. For other locations including the UK, Europe, Australia, New Zealand and various others, contact us here for pricing information.

Shipping Fees:

  • Maxwell's Dynamical Top: $22 US
  • MiniMax Spinning Top: $10 US

There may be other costs such as taxes related to the respective receiving country and are normally collected once the package is delivered to you.

Shipping times for Canada and US: 4 - 9 Business Days.

Please note that shipping times may take longer than normal due to carrier delays. For the most accurate information on when your package will arrive, please refer to your tracking link once the order has shipped.

The Dynamical Top is a precision instrument, should be used carefully and its use is completely at the risk of the purchaser. If it falls to the floor or a table top, the main axle will almost certainly be bent as will the adjusting screws. Spinning the top up to speed either by 'twirling' or using a string wound around the axle must be done with extreme care until the user is familiar with how it will respond. We take no responsibility for damage through usage.