These cute heart keyrings could be made in the traditional way, cutting the leather by hand, but a laser cutter slices through leather like a knife through butter and does the job quickly and super-accurately. That means you can use the shapes cut from one heart to inlay into a different coloured heart. A Zing 16 would be perfect for small projects like this and if I win the Epilog challenge I'll be trying more ambitious leather inlays. The heart measures 1.5" x 1.5". It's a good size for a keyring to use around the house, eg for a window key or a cupboard key. It would also make a neat handbag charm. The contrasting inlay is in the front only, the back is plain.
You will need (for 4 keyrings)
A 4" x 4" piece of leather in each of 2 colours
Four 1/2" diameter split rings
Rubber cement or other glue suitable for leather (the glue from a puncture repair kit will do)
A craft knife or Stanley knife
A metal straight edge
A bulldog clip or clothes peg (clothespin)
The thickness of the leather doesn't matter much, but the 2 colours should be of approximately the same weight.
You can use my design of a heart with a little star cut out of it, or create your own. Step 1 explains how to make a design of your own suitable for laser cutting.
If you want to use this small heart design, just download the PDF onto a memory stick and take it along to your local FabLab or wherever else you can borrow a laser cutter. The lines on it are 0.01mm wide to suit the laser cutter I used, but you should check that this line thickness is right for vector cutting on your machine too. The file format needs to be correct as well - PDF files might not work for all machines. For anyone who wants to create their own design, here is how I did it.
Open up Inkscape (which is open source and free) and explore the shapes that can be created within it, like circles, ovals, stars and polygons. If you find something there that you like, fine, go ahead and draw it. The shape needs to be one that will work as a keyfob with a hanging loop, so an oval, circle or hexagon would be good, a star less good. If you want a more complicated shape like a heart or a flower, it's easier to find a suitable image on the internet or draw one using other software like Gimp or even Word - try Insert, Shapes in Word. Copy the image (click on it and then Control-C, or else right click and choose Copy), then open up Inkscape and paste the image (Control-V). Add a smaller cut-out shape in the middle of the first shape. Do this either within Inkscape or by pasting a new image on top. When you have it the size you want it and in the right position, group the 2 shapes by clicking to select the larger shape first, then hold down Shift while clicking to select the smaller shape. With both selected, click Object, Group. Test it has worked by dragging the shapes and checking they move together. Recolourise to make the outer shape one colour and the inner shape white, like the background. Now you need to convert the image to a vector that the laser beam can follow. With the image selected, click Path, Trace Bitmap. In the Mode tab, tick Brightness Cutoff and then OK. Nothing will seem to have happened, but drag the new image off the old one, delete the old one and then drag the new one back again. In Object, Fill and Stroke, set Fill to no paint, Stroke paint to black and solid colour, Stroke Style width to 0.01mm. Copy the larger shape as many times as you need it, with and without the smaller insert, and fit them together to make efficient use of the leather. Change the size to suit the leather you have available and the size of keyring you want to make. Save as a PDF file, or print to a PDF.
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