Jeweler's Mold Rubber & Mold Cutting
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For instructions on all Castaldo Rubber products             For information on No Shrink Pink

 LiquaCast Rubber: With 0% Shrinkage   Not a silicone rubber! This is a revolutionary molding rubber that has all the characteristics of vulcanized rubber molds, but without the packing or the vulcanizing. In addition to being stronger, tougher, longer lasting and cheaper than other RTV compounds, LiquaCast is also easier to mix, easier to vacuum/debubble and easier to pour.

For more information on this extraordinary product.  

Detailed instructions provided with every kit.

See Ferris Liquid Rubber & Frames for the frames for this rubber

Quantity Stock# Price Quantity Stock# Price Quantity Stock# Price
1 Pound Kit Liquicast1 $25.99 10 Pound Kit
Liquicast10 Buy
$79.95 50 Pound Kit
Liquicast50 Buy

New! LiquaCasticast Ultra:  Extremely tough, strong and tear resistant  LiquaCast Ultra 0% shrinkage liquid RTV rubber is even easier to work with because of it's simple 1:1 mix ratio EITHER BY WEIGHT OR BY VOLUME   Like Liqua-Cast original, is easy to mix, easy to pour and easy to vacuum because of its very low viscosity it is as liquid as cream.  0% shrinkage liquid RTV is a firmer rubber is ideal for delicate & difficult to inject patterns. Firmer rubber means less pattern distortion during injection. Small channels will not be squeezed closed during injection, resulting in patterns that are not filled completely. Great for filigree!  Produces molds with a mirror finish. Shiny rubber surface means bright, shiny waxes. Its extreme durability means that difficult molds last and last and are less likely to break or tear in use.  Bright orange in color and is packaged in plastic containers in two-part kits weighing 1 Kg., 8Kg. and 20 Kg.

Quantity Stock# Price

1 Kilo (2.2 lb.) Kit

LiquicastU2 Buy

8 Kilo Kit

LiquicastU8 Buy

20 Kilo Kit

LiquicastU20 Buy


New! LiquaGlass:  Injecting Castaldo LiquaGlass molds is easy because you can SEE the wax as it is injected!

0% Shrinkage RTV.
• Not an expensive hard-to-mix silicone rubber!
• Not an amateur “bake in the oven” material!
• Makes strong, flexible, easy to cut molds.
• Inexpensive and easy to use 1:1 mix ratio.
• Clear as Glass.
• Thin, easy to pour and mix, Castaldo® LiquaGlass® molds are easy to make because you can SEE what you are cutting!

LiquaGlass 0% shrinkage CLEAR liquid RTV jewelrymolding rubber makes strong, tough, flexible production molds at only a fraction of the price of clear silicone rubbers.  LiquaGlass is easy to measure, de-bubble.  LiquaGlass cures at room temperature in 24 hours with 0% shrinkage.  LiquaGlass is packaged in a 1 kg. / 2.2 lb. kit containing equal parts A & B. in an attractive consumer-oriented carton that is easy to handle and easy to ship. 

Stock # LiquaGlass Buy   Price  $59.95  per kit


QuickSil Rubber: RTV in Only 15 Minutes
QuickSil is a revolutionary new 0% shrinkage jewelry molding rubber material that makes tough, long lasting production molds with a high shine finish almost instantly. QuickSil molds are not weak, delicate prototype molds that can be used only once or twice. They will last for thousands of uses and dozens of years. QuickSil can be used for lost wax casting and can also be used for direct casting of low temperature metals such as pewter, tin etc.
No careful and precise mixing needed-- Just take equal handfuls. Mixing is easy and simple. Mold packing is easy too.  Cures in 15 minutes without heat.
No need to heat up your vulcanizer.  Use it cold. No vulcanizer?  Even c-clamps or a heavy book will do. QuickSil molds are strong, tough and long lasting.
QuickSil RTV Rubber, 2 lb Kit     Stock#
QuikSil Buy
        $54.95 each


Castaldo & Ferris-Ject Mold Rubber
Castaldo is the world's most popular jeweler's rubber. Strips are 178" x 18" x 18" thick. Rolls are 18" wide x  1/8" thick. 5 lb rolls are 3 feet long. 50 lb rolls are 35 ft. long. Precut is 17/8" x 27/8" x 1/8" thick.  

Ferris-Ject Mold Rubber
Premium is high grade, high performance rubber that offers exceptional flexibility, workability and memory at an excellent price. Will reproduce the most exacting details. Available in firm (white label) and soft (green label).  Green label is recommended for extremely thin sections or filigree work.  Strips are 17/8" x 18" x 1/8" thick. Rolls are 18" wide x 1/8" thick. 5 lb rolls are 3 feet long. 50 lb rolls are 35 ft. long. Precut is 178" x 278" x 18"  thick. 


Mold Lock Formers
155 pcs.   Stock#
MLFormer Buy
    Price  $13.95


Sprue Formers

Sprue Formers
22.580 Buy
$1.90 ea.


Mold Cutting
Plastic Surgical Blade Handle
39.257 Buy
Stainless Steel Surgical Blade Handle
39.256 Buy


Ferris See-Thru Mold Compound

An industry favorite for decades, this material makes an excellent mold of the original article. Mold compound forms a transparent rubbery substance when backed at 350° F, making it very easy to see the model when cutting apart the mold. One quart makes 10-14 molds. See-Thru mold compound is typical of its kind of material in that the resulting mold is very flexible and tears very easily. It recommended that relief cuts are not made into molds made from See-Thru compound.

Mold Compound, 1 quart   discontinued by the manufacturer
Mold Compound, 1 gallon   discontinued by the manufacturer


See-Thru Mold Frames

Size Stock# Price   Size Stock# Price
58" x 2" x 3"
22.625 Buy
$24.20   1¼" x 2" x 3"
22.628 Buy
¾" x 2" x 3"
22.626 Buy
$25.00 1½" x 2" x 3½"
22.629 Buy
1" x 2" x 3"
22.627 Buy
$29.90 2" x 2" x 3½"
22.630 Buy