"Brian Reay" wrote in message
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On 16/06/2018 18:02, Tim Watts wrote:
I have to make up a shelf from planks (800mmx600mm).

My first thought was biscuit jointer, but they're not cheap for something
I will use very sparingly.

I am wondering if a good dowelling jig might be a better investment?


As others have said, a biscuit jointer is expensive for a one off. Dowels
are cheap and easy.

Have you considered just glue and clamping?

bodger ...