I'm sure someone in the 3D printing thread will do one and post it to you for a couple £ https://www.thingiverse.com/thing:3351410
The wonders of technology! I'll have a proper look for the one I've lost but might well give that a go. Thanks.
@ltc started
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I'm sure someone in the 3D printing thread will do one and post it to you for a couple £
https://www.thingiverse.com/thing:3351410