These strips are much easier to work with as the edges have been fused so are less likely to bubble while adding and marvering into the bead.Tack onto the bead and while heating from the top directly onto the clear top of the strip you will not damage the dichroic. All these strips are the same as used by artist Pris McGirr in her recent sell out Dichroic/Silver glass class at Tuffnell Glass's studio.