Did some of these ages ago with ‘ homemade ‘ coping’s .

Anyway ; doing properly soon 🙄

One issue was that copings / quoins aren’t like concrete blocks they don’t soak up the cement - so don’t seem to bond well . Should I be using something different or a particular sand/cement mix ??

@Construction Channel has written about it.... haven't time (like you have 😝) to look it up. Loads of timber to steel screws to put in you see.