With the drawers in the framework, there are a few holes to fill - namely the top, and the gaps on either side of the drawers at the front. That involves getting more wood though, as I'm lacking single pieces big enough to cover the wider gap on the front right side. I figure I'll try and get a suitable off-cut from the DIY store,
The top might be filled with a piece of plywood from one of the old shelves, unfortunately it's not long enough to reach the front of the drawers - and (because the cupboard is not square) will need to be at an angle. The pic below shows the sheet of plywood square with the back and sides, but the front has a gap larger on the right than the left:
I have a couple of options here: either get a new piece of wood for the top, or fill some space at the back so the existing sheet can come forwards.
Whilst considering that, I drill, saw, file, and sand handles into the front of each drawer - just a beveled hole about the width of my hand. That's the last major cutting for the drawers, and by this point I'm a little bored, so they're probably a bit rougher than they should be. Never mind, the project is getting pretty close to completion - I can now do some finishing work: filling nail holes and gaps with wood filler, then painting using the same paint used on the cupboard (which was left over from the previous owner's DIY). It's beginning to look presentable.
A trip to my brother's to lend him a tent revealed that he had a load of offcuts from his shelving project (definitely a family trait). I found a suitable piece and nabbed it, and it took very little to cut them to site and nail them in place. With the completely flat front it looks ok - not neat enough for the modernist masterpiece I originally envisioned, but pretty fair.
I decide to go with re-using the materials I already have for the top, and with a bit of sawing and fiddling, it sits quite well:
Next up, final painting...