Years ago I salvaged this chair from a rubbish skip down the road:
It didn't look so bad back then - it had a lovely golden glow, but we ended up with too many chairs, it needed repair (the seat started to fall out of the bottom of it), and it ended up in the back yard for a couple of years. I cut a fresh seat for it from some timber salvaged from another roadside find and kidded myself that placing it under the eaves would protect it until I could get to re-finishing it with exterior varnish. Well, both the chair and its supplementary seat had seen better days, but I still loved the shape. In between time I'd also sold off a number of the chairs we had inside, so it was time for the 'captains chair' to be reinvigorated as a feeding chair for the baby's room.
Firstly I reinforced under the original seat:
Then I coated it with several layers of paint (I used interior/exterior primer first, just in case it ends up outside again).
I painted the supplementary seat too. I left it in two pieces because its such a tight fit that it needs to be in two pieces to fit it into the chair. I confess to being too lazy to fix the split that had developed on the left though.
You can still see the gaps in the timber seat, and I didn't fill all of the holes in the chair itself, but all up I'm pretty happy with the result considering where I started.