Category: Products

We usually visit extended family at Easter-time and my sister-in-law puts together an Easter Egg hunt for the boys and their cousins. This year, of course, we are confined to our own home so it fell to me to devise the clues.

Fortunately, I have been evaluating the Mindsets products and kits to see what we could use in our home learning next term, and several were ideal for generating codes and hidden messages.

Clue 1: Morse code

The components for this clue can be found in the Crumble Starter kit.

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The boys had to connect the battery box to the Crumble, then connect the buzzer to output A (as indicated by my very cryptic clue). I had pre-programmed the Crumble so the buzzer would cycle through the Morse code for “S”, “H”, “E”, and “D”. A few minutes later we were off to the shed!

Clue 2: Invisible ink

This uses the “UV” bank note checker kit, which I had pre-soldered, and a UV pen.

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The 7-year-old had received a Harry Potter “Marauders map” for Christmas which has hidden features revealed by a “magic wand” with a UV LED so he had no trouble knowing how to decipher this clue and reading the message: “look in the washing basket”.

Clue 3: Copycoder

In the washing basket, the boys quickly found a Copycoder. This is popular in escape rooms all over the world: you generate an unreadable message on the website www.copycoder.com and the lenticular surface of the Copycoder unscrambles it.

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They’d already seen the scrambled message at the start of the hunt, so they knew exactly where to use the Copycoder.

Clue 4: Periodic Table Crossword

The week before Easter, both boys had been reading an Usbourne book about the Periodic Table and quizzing me about the facts in it. I decided to turn the tables and see how much they remembered.

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The 10-year-old quickly realised that the squares highlighted in red spelled the final clue: “WARDROBE”. The treasure was found!!

Note: Our boys are 7 and 10 and we kept the clues simple enough that the 7-year-old had chance to participate fully. You could easily adjust the difficulty, though. Can you think of any other STEM activities that would make good clues?? Let us know…

Please note that this product has been discontinued. The blog remains active as a record.

As we are entering the depths of the festive season, we felt it appropriate to have a blogpost or two with a seasonal theme. The principles of this post however, will be applicable any time of the year.

We used Mindsets injection moulding kit (now discontinued) to make some Christmas-themed tree decorations and fridge magnets. You create a 2D mould by either lasercutting a material e.g MDF or acrylic, or by bending a thin aluminium strip. Once this is sandwiched in between two large plates, you can inject it with a thermoplastic – in our case, coloured hot-melt glue. This method means that basic injection moulding is achievable by all, and on a low-budget.

Without further ado let’s get into our project! First of all, we need to think about what is is we are trying to make. As it is nearing Christmas, we wanted to go for something festive. We decided on making tree decorations/ fridge magnets. The principles for our moulds will be pretty much identical.

To start with, we are going to make a Christmas tree-shaped mould, using the aluminium strip. We measured our maximum working dimensions, and planned a tree-shape within that range.

We then set to work creating our mould. It’s a good idea to turn on your glue gun now, if you can keep it in a safe place, so that it is ready to use when you’ve finished your mould. We need to bend the aluminium strip into our required shape. This can be made much more difficult than it needs to be. The main thing to remember, is to start near the end of your strip, so you aren’t trying to bend it in on itself too much. We modelled our shape using ‘sheet metal’ mode in Fusion 360. The great thing with this, is that we can unfold our model, and create a template. But you could easily print out a template and mark out where you need to bend the metal.

Once you have your mould, you need to place it inside the outer case. Don’t forget to place it so that the injection hole is within your desired shape. It also helps to slightly grease the mould, to allow the glue to separate from the case/mould. We’ve placed a small magnet inside the mould, and held it in place with another magnet on the outside.

*Note that we have made a clear acrylic top plate, to make it easier to see whats happening inside.*

Once you’ve screwed the top plate of the mould on, double check that there aren’t any gaps, and that the case isn’t bowing. You may find it easier to place the ‘wings’ of the mould plates the same way, so when you screw them together, they hold the wire frame tighter. This is especially useful if you can’t quite get your mould to sit flat.

The other method for mould making, is to laser cut a piece to go in between the plates, to replace the bent wire. This time, we’ll make a snowflake tree decoration.

Once designed and cut, follow the same steps as before, to create your object.

You can then either glue some string to the decoration, of pierce a hole in the top, and pass some thread/wire through.

And there you have it, your very own DIY injection moulded Christmas decorations.

If you have a go at this project, or any other, we’d love to see! Get in contact with us via email, or on Facebook, Twitter or Instagram