4625 is a very hard wax but to make a good melt, grubby, clamshell etc, you're going to need a pillar wax to blend with either the 464 or 4627. As I mentioned before, if you need it to be softer lower the percentage of the pillar wax and when you need it for tarts up the percentage. There are hundreds of posts on melt blends, waxes, and such in the wickless section. Alot of testing is needed and what works for one does not mean it will work for another...thats why we test. Peak offers 2lb samples on all their waxes and is a great, affordable way to test to see what waxes you prefer.