Casting & Consolidants

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Silicone Rubber Moldmaking Materials
	The Silicone rubbers, when used to make molds, offer high fidelity reproductions, capture delicate details, master intricate shapes and hold severe undercuts. They are widely recognized as the superior moldmaking materials that are easy to use. Silastic 3110 RTV Rubber, formerly Silastic A. White in color, this is the lowest viscosity of the Silastics. It is also the easiest to work with and pour. It fills tiny crevices and indentations and does not require vacuum de-airing. Use only with Catalysts 1 or 4. Catalyst 1 is a blend of active catalysts in an inert silicone paste and is easier to use than Catalyst 4 which is a 100% active material. Silastic E RTV Rubber, white in color this rubber features very good tear resistance, long working times, heat accelerable curing, high elongation and virtually no shrinkage. Much more viscous than Silastic 3110, but much stronger physically after curing. Can pour low melting metals directly into Silastic E molds. Use only with Catalyst E and must be vacuum de-aired after mixing with the catalyst.
Silastic 3110 Silastic E Before curing Flow Pourable Pourable Viscosity, poises 140 1200 Specific Gravity 1.14 1.12 Non volatile, % 98 98 After Curing, 72 hours @ 25°C Shore A Hardness 45 35 Tensile Strength, psi 400 700 Elongation, % 180 400 Tear Strength,ppi 15 90 Temperature Stability, upper limit, °C 260 260 Linear Shrinkage After 24 hours @ 25°C 0.3% Nil After 7 days @ 25°C 0.6% 0.1%
Rubber: Catalyst Working Cure Ratio, by wt. Time Time Silastic 3110 5:1 1 hr 18 hrs Catalyst 1 10:1 2½ hrs 24 hrs 20:1 4 hrs 48 hrs Silastic 3110 100:1 4 min 20 min Catalyst 4 200:1 10 min 1½ hrs. 400:1 60 min 2½ hrs. Silastic E, Catalyst E 10:1 2 hrs 24 hrs
D2513-001	Silastic 3110,1 lb	$41.15
D2514-010	Silastic 3110/Cat.1, 10# Kit	$377.50
D2515-010	Silastic 3110/Cat.4, 10# Kit	$377.50
D2516-001	Silastic E/Catalyst E, 1# Kit	$56.05
D2516-010	Silastic E/Catalyst E, 10# Kit	$377.50
D2517-001	Catalyst 1 for 3110, 1# Kit	$8.48
D2518-001	Catalyst 4 for 3110, 1# Kit	$27.20
Epoxy Wood Consolidant
Designed for restoring wood damaged by dry rot and for sealing hair line cracks, end grain and porosity in wood. Serves as both a sealant against water penetration and as a restorative of damaged wood structural members. Completely saturates the wood fibers, encapsulates and permanently hardens dry rot areas. Working time is approximately 60 minutes at 70°F and a hard cure is obtained overnight.
D2500-010	Gal	$135.00
D2500-032	Qt	$33.75
Marble Flour
F4237-100	100 grams	$ 4.50
F4237-500	500 grams	$12.50
Polyfix Ready Mix
Polyfix is a ready-mixed, non-sagging, smooth white paste that dries to a hard, smooth, easily sandable solid. Adhesion to substrates is very good. It is quite workable and can be conformed easily. Frequently used as a thin surface layer over Polyfilla, especially when a really smooth surface is essential. Polyfix can be spread so smooth that little or no sanding is required in many cases, though it does sand very smooth. Polyfix dries with low shrinkage, but is ordinarily used only in thin layers. It is reversible in acetone when set. Polyfix is very white in color and is an excellent material for filling lost areas on panel paintings.
D2520-255	225 ml.	$8.50
Polyfilla
Polyfilla is a cellose fiber based plaster-like compound with very unique properties. It is able to withstand great shock, vibration and impact, does not shrink or expand on setting, and exhibits adhesion values of up to 6 times greater than plaster (depending upon the substrate). The partially set layer of Polyfilla can be stippled or otherwise textured to obtain a broad variety of effects. Can be readily sanded when dry, although because of the fiber content of Polyfilla, it is difficult to obtain a truly smooth surface by sanding. Excellent for fills on canvas paintings. Ideal as a plaster substitute when repairing vessels, for relief work and as a sculpturing medium. When working with Polyfilla, use completely clean mixing bowls and tools as traces of set Polyfilla cause fresh Polyfilla to set quite quickly!
D2521-001	1 kg	$9.10
Cabosil
High purity, extremely fine silicon dioxide useful for thickening aqueous or organic solvent systems. Often used in conservation as an additive to lacquers and coatings to reduce gloss - a matting agent. Cabosil is an extremely light and fluffy material. It’s average Primary Particle Size is only 7 nanometers, and it’s pH in water suspension is 3.5 to 4.2.
F4235-005	50 grams	$7.85
F4235-200	200 grams	$19.25
Silica Matting Agent
D4236-200	200 grams	$19.25
Microspheres
Used as a filler in porcelain/ceramic repair. Also used in plaster repair. These are lightweight glass spheres, of 20-200 micron size. When used in plaster repair, they inhibit very little the flow of the adhesive during injection but, by reducing the adhesives density, limit its flow under the force of gravity after placement.
D9025-250	250 grams	$8.95
D9025-060	60 lb.	$240.00
French Chalk
A fine filler for porcelain and ceramic repair. Can be mixed and used the same as microspheres, Polyfilla, and other fillers.
F4238-500	500 grams	$4.95