worktop cut part 3 upstand cut and fitting 

Ideally you don't have to but if needed the Stanley knife or very fine sand paper

It's the other way to do it, absolutely. But I prefer this method as tape intend to come off when will get some moisture

Although better option is worktop upstand accessory kit. Black in this case. This are small end cups made of plastic or metal. But in this case that was preferred way to do it by my customer

@@mk15handyman I will check them out. Thank you.

Thank you