Here is a challenge.
Can anyone explain in simple basic language that girlies like me might understand, how can I put in the ledge that the frames sit on? I'm not sure if you are talking about using the dado blades (which I don't have) for that, but I have no need for fancy joints or those inverted handles that weaklings like me can't get a grip on with full supers.
My woodwork mate has gone home so I tried to use the circular saw out of necessity(for the first time), and made a big mess. It cut too far in when it somehow leaned over all by itself with me hanging on. (I am sure that picture will provide you with some amusement). Anyway, I can only get 19mm thick board, so the ledges really need an extension so the frames don't drop. Thus I was able to cover over the splintered gullies and rectify the mess with a strip of merbau, but I would like advice on getting it right the first time, please, preferably without a circular saw (until it and I can be proper friends).