What is a compound complex sentence with the word abrasive?

Although the sandpaper was abrasive, it was necessary to smooth the rough edges of the wooden table, and the craftsman carefully used it to achieve a flawless finish.

Here's the breakdown:

* Independent Clause 1: Although the sandpaper was abrasive

* Independent Clause 2: it was necessary to smooth the rough edges of the wooden table

* Independent Clause 3: the craftsman carefully used it to achieve a flawless finish

* Subordinating conjunction: Although

This sentence has three independent clauses (each capable of standing alone as a sentence) connected by the conjunction "and," making it a compound sentence. The first clause is introduced by the subordinating conjunction "although," making the sentence complex as well.