






⚡ Melt faster, shine brighter — the secret weapon for serious jewelers!
Semme's Jewelry Casting Borax is a premium flux designed to accelerate melting speeds and dissolve oxides during gold and silver melting. Perfect for casting and soldering, this 3.17-ounce flux enhances metal purity and efficiency, making it an essential tool for professional jewelers and metalworkers.



| Customer Reviews | 4.4 out of 5 stars 129 Reviews |
J**I
Good product
10 of 10
V**E
Ok
Ok
C**Y
Work great with gold
This was a my first time smelting my tiny flakes of gold I had and made a bb size gold piece. Borax worked as described. Saved me money too. Great deal for sure
P**S
Forge
Item arrived very promptly and was as described. Works well for blacksmith “welding “.
T**Y
Very small
Tiny
R**S
Good
Good
W**R
Awesome Day
love them
J**S
Buen funcionamiento
Súper
P**Z
Shipper
The product is great as always. The delivery AS ALWAYS left in the Wrong place. Package left on front porch Visible to everyone who walks by . Directions specifically stated BACK DOOR!!!!! UGGHH
S**N
Très petite quantité
Nettoyer l’or
Trustpilot
1 month ago
2 months ago