One option no one has mentioned and actually works very well is a power washer. it can take bark and dirt off and scour the wood clean. This is actually the preferred way when cleaning up root balls for furniture etc.
Depending on the type of wood you are using, many species don't need much more than peeling the bark clean. And as far as peeling bark, the ...
I'm doubting if the small frame (the base) is big enough to avoid the bed from flipping if you stand/sit on the border.
Do not stand on the border!
For adult sitting on edge this looks ok to me, weight of bed base + matress should be sufficient for bed to be stable. But without knowing person's weight it is guesswork.
You will have to build it and test to ...
This is an old question, but it still deserves an answer.
Would this type of connector be structurally as sound as a knockdown joint?
For the intended use, definitely. For connecting the frame of your Murphy bed, no.
What must I consider when using such a connector?
You need to think about the size and direction of the load. Bed rail connectors have a ...