I decided today to do a repot on my Acer Palmatum, which had only been in the pot for two years.
In need of some new compost.
Lifting up in the pot.
A light trim.
About an inch removed all round.
The base was also trimmed by the same amount..
Placing back in the pot. The sharp eyed will notice the wedges cut out, to allow more room for new roots.
Nebari looking good.