Mold Supplies and Accessories

From Gruber Systems and Marshall Gruber Company

Everything you need to setup a bowl or sink mold for casting, plus overflow, drain and finished trim components

Gruber Systems can supply you with all Marshall Gruber Lavatory Bowl Drain Systems and Overflow System components, as well as a number of Installation Aids – such as bowl clips and others that are set into the matrix during casting to provide an integral bowl mounting system. These components are used to manufacture cultured marble or solid surface vanity bowls.

These products are all Marshall Gruber Company products, but Gruber Systems can supply these items if preferred.

Categories include:

  • Drain Components
  • Overflow Components
  • Bowl/Faucet Installation Products

Faucet Hole Rings

Faucet Hole Rings
 

Our silicone-coated cardboard Faucet Hole Rings are a real time saver for manufacturers, since they provide a fast, easy way to create 1.25″ (3.2 cm) diameter faucet fixture holes in a vanity top. Faucet hole rings are positioned and set in place on the vanity mold to create holes in the finished product where the faucets will be installed, saving drilling time later. Installers need only to pop out holes prior to faucet installation. Available in five different heights to accommodate different thicknesses of marble. Sold in boxes of 1,000 (approximately).

Order Information
3/8″ (0.95cm) – #000016C
1/2″ (1.3cm) – #00001C
5/8″ (1.6cm) – #00002C
3/4″ (1.9cm) – #00003C
7/8″ (2.2cm) – #00004C


Bowl Clips

Bowl Clips
 

Bowl clips are used with the floating unit assembly for firmly attaching undermount bowls to marble vanity tops. The screw of the floating unit assembly fits through the slot of the bowl clip, resulting in a firm, solid attachment of undermount bowls to cultured marble vanity tops. Packaged in quantities of 100 or 1,000.

Order Information
Box of 100 – #000061
3/8″ (0.95cm) – #000016C
Box of 1000 – #00006


Floating Unit Assembly (FUA)

Floating Unit Assembly (FUA)
 

Known at “T-Nuts” to many, they are placed into the ungelled matrix. When the marble cures, they provide a solid anchor for attaching undermount bowls to marble vanity tops and bases to marble table tops. The paper tab on the “T-Nut” assembly prevents it from sinking too far into the matrix and also serves as a spacer for the proper positioning of the “T-Nut” when used with speedy plugs. It also serves as a spacer for the proper positioning of the FUA when used with speedy plugs. Available in quantities of 100 or 1000.

Order Information
FUA, Box of 1000 ASSEMBLED Kits – #00005
FUA, Box of 100 ASSEMBLED Kits – #000051


Overflow Tubing

Overflow tubing is used to create an overflow system in a cultured marble or solid surface vanity bowl. The components are installed prior to casting.

Oval Overflow Tubing
 

Oval Overflow Tubing

The Overflow Tubing connects directly to the polycollar at the drain end and to the overflow stem at the overflow outlet. The Overflow Pipe becomes a permanent part of the finished bowl. The Overflow Pipe connects directly to the oval polycollar at the drain end and to the overflow stem at the overflow outlet. In addition, it features an integral, calibrated scale that permits quick and accurate trimming to achieve a proper fit on any size and shape of bowl. Like the polycollar, the overflow tubing becomes a permanent part of the finished bowl. They are available in boxes of 100 and 500.

Product Datasheet

Polycollar drain component
 

Round Plastic Tubing

Flexible, pliable 1/2” clear vinyl tubing is used to provide a germ-resistant permanent bowl overflow. Fits snuggly onto the round polycollar. Use with a round stem to create a clean outlet hole. Boxed plastic tubing is preferred if it is being shipped via UPS, since shipping boxed items is relatively less expensive.

Order Information
1/2” Round PVC Tubing – 100’ Roll – #001010
1/2” Round PVC Tubing – 100’ Roll (Boxed) – #001010B

Polycollars

Polycollars are available either Trimmed, or Untrimmed. Trimmed polycollars have the top cut off, and untrimmed polycollars are not trimmed.

round trimmed 3-step polycollars
 

Polycollars are available either Trimmed, or Untrimmed. Trimmed polycollars have the top cut off, and untrimmed polycollars are not trimmed.

Product Datasheet

hydro 5 jet face caps white

Round Overflow

hydro 5 jet face caps bone

No Overflow

hydro 5 jet face caps chrome abs

Oval Overflow


Drain Boss

These durable, high quality machined aluminum drain boss assemblies eliminate the need for polydomes, captive nut assemblies and suction cup assemblies. They are highly recommended for use with modular vanities and floating bowls – especially when using Extrudable Tooling Wax such as GruberCare Ex-Wax Extrudable Tooling Wax.

Suction Cup Stem Assembly
 

Standard Drain Boss Assembly

  • 1-9/16″ Diameter Drain Boss with 5/16″ Diameter Drilled Center Hole
  • Bolt
  • Washer
  • Nut

Order Information
Standard Drain Boss – Ea – #191045

Suction Cup Stem Assembly
 

Hollow Core Drain Boss Assembly

This drain boss is an alternative to the standard Drain Boss shown above. This product utilizes the same 1-9/16″ diameter drain boss, but with a larger 1/2″ center drilled hole. This product also includes a slightly larger bolt with a drilled center “hollow core” that some cultured marble manufacturers prefer. This bolt is drilled all the way through the bolt, which serves two functions – it allows pressure to be equalized from the mold surface to the backside of the mold and allows the operator to blow air down into the mold cavity during demolding to assist in mold release.

  • 1-9/16″ Diameter Drain Boss with 1/2″ Diameter Drilled Center Hole
  • “Drilled core” 1/2″ Bolt (drilled through the entire length of the bolt)
  • Lock Washer
  • Nut
Order Information
Hollow Drain Boss – Ea – #R-01132

Suction Cup Stem Assembly

Suction Cup Stem Assembly
 

The Suction Cup Stem Assembly is used to firmly attach the polydome, overflow components and floating bowl mold to a vanity top mold. Individual components may be ordered separately. Fits all sizes.

Order Information
11.5″ Stem Assembly – Ea – #011271

Order Information (Components)
Stem Only 3/8 x 11-1/2” – Ea – #01127
Suction Cup – Ea – #01122
Wing Nut 3/8”-16 – Ea – #01123
3/8” Washer – Ea – #01123-1

Captive Nut Assembly

Captive Nut Assembly
A real time saver, our Captive Nut Assembly fits directly onto the modular bowl mold. Then, an eye bolt fits through the polydome and screws directly into the captive nut holding the polydome securely in place. This eliminates the need to bend over and reach under the mold to hold the bolt while you tighten down on the wingnut above the polydome. The Captive Nut portion of the assembly, once tightened into place, becomes an integral part of the mold. Simple. Because this assembly is permanently affixed to the drain end of the mold, there is no need for a stem assembly. The polydome attaches with an eyebolt for easy removal. Time and materials are saved for a more efficient production process. We have plenty in stock.

Order Information
Captive Nut Assembly – Ea – #01131

Order Information (Components)
Bolt – Ea – #011311
Jam Nut – Ea – #0113212
5/16″ Flat Washer – Per lb – #0113213
Lock Washer – Ea – #0113214


Reusable Overflow Stems

These reusable overflow stem products create a overflow hole in the casting of a cultured marble or solid surface lavatory vanity bowl, and are removed after casting.

reusable round overflow stem

Reusable Round Overflow Stem

The new round stem is angled 90° for easy insertion, so that round tubing can be attached without crimping. Creates a cleaner, more attractive outlet that is easier to finish, and eliminate the need to redrill when adding a round beauty ring.

Round Overflow Stem – Ea – #001015

Reusable Oval Overflow Stem
 

Reusable Oval Overflow Stem

The oval stem was designed to fit Gruber’s Oval Overflow Pipe and Oval Beauty Rings. It is easily removed for reuse and eliminates costly refinishing of the overflow hole.

Oval Overflow Stem – Ea – #01124

Reusable Oval-To-Round Adapter Stem
 

Reusable Oval-To-Round Adapter Stem

The adaptor stem allows manufacturers to connect round overflow tubing to a mold with an oval overflow hole already cut.

Adaptor Stem – Ea – #001017