Thanks fellas! I watched that vid last night, but will sit and watch the series today.

I believe that the scales are the same size. It's hard to see, but in my first photo, I have them both clamped together whilst sanding the edges.

I think I'll go with another approach to getting them the same thickness - by taping them side by side to a board, and sanding them simultaneously to equal depths. Then, drill holes, and then stick them together before rounding edges.

That being said - I'm a complete noob here - does this sound ok?

Cheers,

Aaron