In message , Tim Watts
writes
On 16/06/18 18:13, Tim Watts wrote:
On 16/06/18 18:10, Jim K wrote:
Tim Watts Wrote in message:
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?


Biscuit bit in a router?

I don't have a router
But as I might be interesting in getting one, I will have a look -
ta. Never heard of those...

Ah - I see...

The only difference I can see is the lateral alighnment (or not). Is
that too important, or does one just make the slot a bit wider than
needed?

I wouldn't call 800x600 a plank!

You can d-i-y tongue and groove if you have access to a bench saw.
Create an edge slot by several passes through the saw with the blade set
to a shallow cut.

Then use a strip of thin ply or cut a strip off a batten as the tongue.

--
Tim Lamb