Making a custom concrete countertop with an integral sink is an approachable project for anyone with decent carpentry skills and a willingness to learn.
How to make a concrete countertop with integrated sink.
Making a large hole as in the above 2 sink options greatly increases the overall weakness of the concrete piece and stress cracks are common around sinks.
For the large flat surfaces use a disc sander fitted with diamond discs of varying grit.
I had to make it my own with the sink and adding lights.
We were remodeling our bathroom and i wanted a unique option for the countertop and sink.
To polish the concrete countertop to a smooth finish use an abrasive pad and a water feed to smooth the sides and concave sinks.
I finally decided to make a concrete countertop after seeing other instructables on the subject.