Designed this little gadget to help my wife insert new sewing needles into her machine.
Printing this tool is straightforward. I used PLA with a 0.4mm nozzle. The only thing to watch for is any 'elephant's foot' effect at the base, which might slightly obstruct the hole. If that happens, you can easily clear the hole with an old needle or similar tool.
The author marked this model as their own original creation.