It took days of going through more than a thousand customer reviews and conducting expert researches to narrow down the list. Weve included a comparison table below to give you a quick summary of our top 10 3d pen refills. Its followed by an in-depth review of each 3d pen refills. Hopefully, once you are done reading this article, you will be well informed about 3d pen refills and be able to select the right 3d pen refills for you without any hesitations.