Unlike Permanent Hats, Reusable Hats can be used many times - thus eliminating the need and cost of a female mold - especially for molds that are not used extensively.
Fabricated of high-density polyethylene, a reusable hat will provide many trouble free castings if reasonable care is exercised in its use and storage. A reusable hat is applied to the mold after the initial pour of the matrix has been vibrated. It is placed over the bowl and the rim of the hat is gently pressed into the un-gelled matrix. A generous 2” flange is provided around the perimeter of the hat to allow for maximum adhesion of the hat to the matrix. Reusable hats are also available with an “untrimmed” flange around the perimeter.
Note: Reusable Hats are not as durable, nor as precise a fit as a high quality female mold, but offer the savings that a reusable female provides.
Types of Reusable Hats:
With or Without Overflow


Trimmed, or Untrimmed


Reusable Hats
This chart lists all TRIMMED models, in both "With Overflow" and "No Overflow" versions.
Order Information:
Bowl Name | Description |
With Overflow
|
No Overflow
|
Access Rectangle | RH-ADA Rectangle | 01338 | 013385 |
Bar Sink | RH-Bar (20051/20052) | 01453 | |
Cambria D | RH-Cambria D | 01352 | |
Canadian Oval (Large) | RH-Canadian Oval/Shell | 01355 | |
Canadian Oval Shell | RH-Canadian Oval/Shell | 01355 | |
Carmel | RH-G | 01356 | 013564 |
RH-G Side Overflow | 013562 | ||
Catalina
|
RH-SL
|
01369
|
|
RH-SL No Over (PH Master) | 013696 | ||
RH-SL No Over (Grecian) Bigger | 013692 | ||
Celebrity Rectangle | RH-13x17 Rectangle | 010807 | |
Delaware | RH-DESD/DE | 013540 | 013541 |
Delaware, w/ Soap Dish | RH-DESD/DE | 013540 | 013541 |
Diamond | RH-DD | 013545 | 013546 |
Diamond (Little) | RH-LDD | 013547 | 013548 |
Dixie | RH-N/NS | 01362 | 013680 |
RH-N-N Square | 013622N | ||
RH-N/NS Square Oversize | 013622 | ||
Hexagon | RH-Hex | 01370 | |
Hilo | RH-W | 01364 | 013640 |
Hilo w/ Soap Dish | RH-WSD | 01379 | 013686 |
Kona | RH-G/GS | 013563 | |
La Paz | RH-LZ | 013675 | 013676 |
Laguna | RH-N/NS | 013620 | 013680 |
RH-N/NS Square | 013622N | ||
RH-N/NS Square, Oversize | 013622 | ||
Laguna (Deep) | RH-Deep N | 01395 | |
Lanakai | RH-Y/YS | 01366 | |
Mai Tai | RH-I | 013681 | |
RH-I (Square Pour Hole) |
01358 | ||
Makaha | RH-LN/LNS | 013615 | 013614 |
Malibu | RH-CC Oval | 01367 | 013723 |
Malibu Deep, w/ OG Rim | RH-DCL/FL | 01442 | |
Malibu, w/ Soap Dish | RH-CCSD | 013672 | |
Malibu Flair | RH-DCL/FL | 01442 | |
Maui | RH-WX | 01372 | |
Moana | RH-P Square Hole | 013628 | |
Molokai | RH-S | 01363 | |
Molokai (Deep) | RH-SS | 01371 | |
Monterey | RH-LN/LNS | 013615 | 013614 |
Newport | RH-L | 01361 | 013612 |
Newport (Deep) | RH-LL | 01368 | |
Olympic Oval Large | RH-LG Olympic | CALL | |
RH-VSS | CALL | ||
Olympic Oval Small | RH-Small Olympic | 01392 | |
Ramp Bowl, 14" x 20" | RH-Ramp | 015819 | |
Redondo | RH-Y/YS (Side Square) |
01366 | 01375 |
Royale (Large) | RH-RL | 013693 | 013694 |
Royale (Small) | RH-LRL | 013678 | 013679 |
Savannah | RH-SH | 013634 | 013635 |
Sun Fluted (Large) | RH-Sun Fluted Large | 01443 | |
Sun Fluted (Small) | RH-Sun Fluted Small | 01445 | |
Sun Oval (Large) | RH-Sun Oval Large | 01397 | 01396 |
Super Bowl I | RH-RR | 013688 | |
RH-RR Square Hole | 013685 | ||
Super Bowl I, w/ Soap Dish | RH-RRSD | 013684 | |
Super Bowl II | RH-MR | 013687 | |
RH-MR Square Pourhole | 013623 | 01384 | |
Super Bowl III | RH-MMR | 013624 | |
Topaz | RH-AA | 01350 | |
Ventura | RH-V | 013683 | 013689 |
Waikiki | RH/N/NS | 013620 | 013680 |
RH N/NS Oval Port | 01362 | ||
RH-N/NS Square Port (N on channel) | 13622N | ||
RH N/NS Sq Port Oversize - No gussets | 013622 | ||
Wave, 12" x 20" | RH-Wave | 013636 | |
Wave, Chamfer | RH-Wave Chamfer | 013636 | |
Wave, Deep Small | RH-Deep Small with Oval Pour | 015094 | |
Wave, Drop 12" x 18" | RH-Drop Wave | 015818 | |
Wave, Small | RH-Small Wave | 015093 |
Note: To order Untrimmed Hats, contact your Marshall Gruber representative.
Related Products:

Permanent Hats
These hats are designed to become an integral part of the casting by providing essentially a disposable female mold (a "hat"). Avoid female mold cleanup and makes casting more convenient.

Reusable Funnels
Eliminate wastage or spilling while filling the mold with these polyethylene funnels that attach to oval, round or square reusable or permanent hats.