Re the biscuits a u shaped kitchen query I think it would have been a case of..
Your two sides of the u, are propped with the wall edge on the units, and the front edge up in the air some number of inches
The bottom of the u is entirely in the air the same number of inches
The biscuits are fitted and then the props removed and the whole lot pushed down, coming together as it goes. Remember the biscuits don't need to be particularly long as they're really only stabilising the two joints vertically.. Glueing and dog boning the joints will form the main effort in having a stable joint.
Dare say that wiping with a wet cloth caused some of the wood fibres to expand.. I think you might have to sand and oil without wiping with water, as it will be the oil that helps the surface resist the water.. But I'm prepared to be wrong on that because I've only ever worked with flooring in a surface treatment capacity
Your two sides of the u, are propped with the wall edge on the units, and the front edge up in the air some number of inches
The bottom of the u is entirely in the air the same number of inches
The biscuits are fitted and then the props removed and the whole lot pushed down, coming together as it goes. Remember the biscuits don't need to be particularly long as they're really only stabilising the two joints vertically.. Glueing and dog boning the joints will form the main effort in having a stable joint.
Dare say that wiping with a wet cloth caused some of the wood fibres to expand.. I think you might have to sand and oil without wiping with water, as it will be the oil that helps the surface resist the water.. But I'm prepared to be wrong on that because I've only ever worked with flooring in a surface treatment capacity