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Mold Releases

When creating parts from molds—or even molds themselves—applying a release agent is an important step in the process. A release agent is generally a combination of parting wax and PVA, or a one-step additive, like our FibRelease®, that can be wiped on in several layers. Most deliver a durable, high-gloss surface finish and, most importantly, act as a parting agent between layers of resin and the mold surface, to preserve the integrity of your part and avoid damage. The small amount of effort to apply a quality release agent during preparation far outweighs the hours spent correcting damage later.

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PVA Release Film
Easy Spray-On, Easy Release for Molds


PVA, or polyvinyl alcohol, should be used with our #1016 Partall Wax for the easy release of parts from a mold. Wax should be applied to the mold, 3–4 layers thick, and buffed to a high gloss. Once the final layer of wax has dried, PVA should be applied with the following considerations:
  • PVA can be brushed on, but for best results, apply with a spray gun, 12–18 inches away from substrate. Consider our #2251 Preval Sprayer for smaller applications, or our #123-A/#126-A Touch-Up Guns for larger parts.
  • Generally, apply in three layers: the first, a thin mist, allowing 10-15 minutes to dry completely. Then apply two heavier flow coats, allowing each to dry completely (30-45 minutes each).
  • PVA should form a smooth, glossy surface that will not shrink or pull away from corners or curved surfaces.
  • It may be applied over polyester repairs, or gel coat, as a surface layer for airless tack-free cure.

As a dry film, PVA is resistant to the solvents in a resin system, but is water soluble. PLEASE NOTE: It should not be used with resin or substrate that contains—or produces—water during cure.

One gallon covers approximately 400 square feet. 
Parting Wax
Simple and Reliable Mold Release Wax


Paste Wax is a non-silicone green wax specially formulated to produce a tough, durable, high-gloss surface. When used with #13 PVA, Partall delivers excellent release characterstics.

Special preparation is required when using on a new mold:
  • Apply four total coats before initial use.
  • Apply two coats of wax and buff off excess.
  • Allow one hour for solvents to evaporate, producing a tougher wax barrier.
  • Apply final two coats.
 
FibRelease<sup>®</sup>
For Effortless, One-Step Release of Parts


Save time, effort, materials, and money with Fibrelease®. With just one quick misting onto the mold surface, you'll get multiple releases with proven results. No wax is involved.

Fibrelease® is water based and contains no harmful solvents, VOC chemicals, or silicones—so it's worker safe, environmentally safe, and paint-shop ready.

Application is easy! Keep these considerations in mind:
  • Always start with a Class "A" polished mold surface.
  • Mist, or wipe, Fibrelease® onto your surface and allow it to dry to a film—works in just 5 minutes!
  • Although not necessary, many fabricators spray Fibrelease® before molding each part for best results.
  • Maximum service temperature is 550°F.
  • Fibrelease® is compatible with all the resins on our website.
 
Easy Clean Mold Release for Urethanes
Easy to Apply, Easy to Clean Off


With Easy Clean Mold Release for Urethanes, get easy separation of urethane resins from epoxy or metal tooling in production applications. This release agent provides a glossy surface finish with minimal buildup on the mold, and can be applied at room temp or elevated termperatures.

Easy Clean Release is clear and water thin. Simply brush, spray, or wipe on to prepare the mold. Post cure, simply clean parts and mold with household soap and water. It could not be easier! 
Non-Silicone High Temp Paste Wax
Mold Release for High Working Temps


This High Temp Paste Wax is specifically designed to release epoxy and polyester—for application temperatures ranging from 75° to 375°. Fabricators can apply this wax to polyester, epoxy, steel, and aluminum molds with assurance of no silicone contamination.

Special preparation is required when using on a new mold:
  • Apply a minimum of three layers of Non-Silicone High Temp Paste Wax, each four to six hours apart.
  • Select an area of four square feet, and rub on the creamy wax with a clean terry cloth. Before it dries, use a separate cloth to break the surface film.
  • After waxing, buff the entire surface until the wax is clear.
 
Meguiar's Mold Polish Conditioner and Release Wax
All-in-One Complete Mold System


Meguiar's Mirror Glaze® is a complete production mold system based upon proper mold preparation and a unique paste wax blend. It yields a number of advantages:
  • Mirror Glaze® is specially formulated to provide the maximum number of releases per application.
  • It consistently delivers very high gloss.
  • No time-consuming sprays or additonal steps are involved—it's designed for simple wipe-on, wipe-off.
  • With proper care, fabricators get dependable, trouble-free part release.


This system is compatible with PVA, our part #13, for added release insurance. 
Release Wedges
Safe, Reliable Tools for Mold Release


Fabricators use plastic release wedges to help remove medium-to-large parts from a mold. Wedges are inserted around the perimeter of the mold, between the mold and the part, and then gently driven in until the piece pops out. It is necessary to use a sufficient number of wedges at the perimeter, particularly for larger parts—one wedge will not do the job. Each wedge should be tapped, in turn, as you progress around the mold.

Wedges are made of soft polyethylene, so as to not damage the mold or the part. White wedges are more rigid in nature, the pink are slightly more flexible. 
Air Injected Wedge
Use Air to Carefully Separate Stubborn Parts


Experienced fabricators will likely run across that hard-to-separate part, whether it's larger in nature or just stubborn—which presents a challenge for demolding. Standard wedges only reach a few inches into any mold, and using force can result in damage. Applied air pressure provides a solution.

Our #958 Air Injected Wedge is designed to deliver air all the way to the sticking point to provide pressure where it is needed most. Simply insert the wedge and attach air pressure to the inlet.
  • Heavy-duty, polypropylene wedge is 6-1/2" long and is designed to be chemical resistant and easy clean.
  • Blow gun body features rubber-coated trigger lever and 1/4" inlet.
  • Recommended Pressure: 2–4 Bar, Max 9 Bar
 
Mold Release Clip System
Quick, Sturdy Fastening System for Molds


Make the finishing stages of mold-making go much smoother. This unique clipping system is designed to quickly joins multiple-piece molds during final assembly and hold them tightly to prevent slipping or misalignment. Clips work with 1/8" drilled holes and be easily attached and removed using the Fastening Clip Plier, our part #792.

To see this system in action, watch our Learning Center video, How to Mold Fiberglass & Composites (video 7 in the series of 8). 
Chavant Le Beau Touché Clay
Extremely Smooth with Excellent Adhesion


This oil-based modeling clay is non-drying and can be carved and shaped easily without cracking. It features excellent adhesion with a variety of materials, including aluminum, cardboard, foam, paper, and fiberglass molding applications. Use it for temporary fillets, construction of mold parting lines, and quick mold repairs. It readily adheres to waxed surfaces, and responds to PVA separator.

It is workable at room temperature, but can be warmed to a softer, stickier consistency simply by working the clay in hand. While Le Beau Touché clays can be left out in most environments and are generally stable, this original, cream-colored version is sensitive to heat variations—avoid storing and using in temperatures above 90°F.

For a slightly firmer, less tacky clay for use where the working environment may exceed 90°F, consider our #1121 Chavant Le Beau Touché Clay HM (brown in color).

All of the Chavant clays available on FibreGlast.com are sulfur-free, non-toxic, and will not oxidize.

Each 2-lb. Block: 2-3/4" x 2-3/4" x 5"

Net Case Weight: 40 lb. (20 x 2-lb. blocks) 
Chavant Le Beau Touché Clay HM
Smooth and Adhesive for High Working Temps


This oil-based modeling clay is non-drying and can be carved and shaped easily without cracking. It features excellent adhesion with a variety of materials, including aluminum, cardboard, foam, paper, and fiberglass molding applications. Use it for temporary fillets, construction of mold parting lines, and quick mold repairs. It readily adheres to waxed surfaces, and responds to PVA separator.

Unlike the original #1120 La Beau Touché clay, this high melt (HM) formula is less sensitive to heat variations and is recommended for use where the working environment is expected to exceed 90°F. The HM formula is slightly firmer and less tacky at room temperature—it can be warmed to 105°F for ideal handling (do not exceed 115°F). It will return to its original firmness when it returns to room temperature.

For a slightly softer, more tacky clay for use where the working environment is not expected to exceed 90°F, consider our #1120 Chavant Le Beau Touché Clay (cream in color).

All of the Chavant clays available on FibreGlast.com are sulfur-free, non-toxic, and will not oxidize.

Each 2-lb. Block: 2-3/4" x 2-3/4" x 5"

Net Case Weight: 40 lb. (20 x 2-lb. blocks) 

You can place your order on our website or, if you have any questions, call 1.800.838.8984 | 8:00am - 8:00pm EST Mon-Fri.


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