Application guide
Polyester Clear Casting Resin for Statues, Idols and Decorative Articles
Casting statues, idols and decorative articles, and top-coating furniture, with the clear orthophthalic polyester casting grade SPR 201 CC — and how it differs from the epoxy Clear Casting Resin.
A polyester casting grade, cured with MEKP and cobalt — not an epoxy.
Workshops that cast statues, idols and decorative articles, or finish furniture with a clear top coat, often need a clear resin that cures with the same MEKP and cobalt system they already use for FRP work. Polyester Clear Casting Resin (SPR 201 CC) is the clear casting grade of the orthophthalic polyester family from Samrat Poly Resins, India. It is a different product from the two-part epoxy Clear Casting Resin, and the two are not interchangeable; the polyester vs epoxy comparison sets out how to choose.
What manufacturers build
The catalogue lists three uses for SPR 201 CC: statues and idols, decorative articles and artefacts, and furniture top coats. In practice that covers workshops producing cast figures and devotional pieces, small decorative items and souvenirs made in silicone or FRP moulds, and furniture makers who want a clear resin layer over a finished surface. Deep river tables and jewellery pours are the territory of the epoxy grade and its own guides, such as the epoxy casting-process guide.
Why this material suits the work
The catalogue gives SPR 201 CC a clear liquid appearance, a viscosity of 350–450 cPs, a gel time under 8 minutes and 33–40% styrene. It is supplied non-accelerated, so the workshop sets its own MEKP and cobalt octoate dosage. That fast gel suits short production cycles, but it also means the working window after catalysing is short, so batches should be sized to what can be poured in time. Depth per pour and finished-surface properties are not published for this grade; establish them with trials on your own moulds. The SPR 201 CC knowledge hub explains the grade in more detail.
Required resin characteristics
- A clear resin, so the cast piece or top coat can be coloured or left transparent as the design needs
- A viscosity low enough to fill mould detail (350–450 cPs listed)
- A cure system the workshop already handles: MEKP and cobalt octoate, added separately
- A gel time that matches the production rhythm (under 8 minutes listed)
- A clear distinction from two-part epoxy systems, so the right process and cure are followed
Process context
A typical workshop prepares a clean silicone or FRP mould with a suitable release, weighs out only as much resin as can be poured within the gel time, and adds pigment or filler if the design calls for it. The catalogue reference cure for SPR 201 CC is MEKP 1.5% with cobalt octoate 0.4%. The peroxide and the cobalt accelerator are added to the resin separately, one after the other with mixing in between; a concentrated peroxide is never mixed directly with cobalt. The mixed resin is poured or brushed on, left to cure at room temperature and then demoulded and finished. For furniture top coats the resin is applied over a prepared, dry surface. The figures are typical catalogue values that describe the grade, not batch guarantees, and dosage for your workshop temperature is settled by trial.
Advantages
- Listed by the catalogue specifically for statues, idols, decorative articles and furniture top coats
- Cures with MEKP and cobalt octoate, the same system used across polyester FRP work
- Supplied non-accelerated, so the workshop controls gel through its own dosage
- Gel time under 8 minutes supports short casting cycles
Common products
- Statues and idols
- Decorative articles and artefacts
- Souvenirs and small cast figures
- Clear top coats on furniture
Common questions
No. SPR 201 CC is an orthophthalic polyester cured with MEKP and cobalt octoate. The Clear Casting Resin in this catalogue is a two-part epoxy with its own hardener and mix ratio. Do not switch between them without a trial.
The catalogue lists MEKP 1.5% and cobalt octoate 0.4%, added separately during use. Adjust within your own trials for workshop temperature and batch size.
A maximum casting depth is not published for this grade. Establish a safe pour depth by trial on your own moulds, starting small, and confirm on enquiry if you plan larger pieces.
Yes, furniture top coats are one of the three uses the catalogue lists. Test on a sample of your own substrate and finish first, because finished-surface performance is not published.
Planning a casting or top-coat line?
Tell us what you cast, the mould type and the expected monthly quantity. Samrat Poly Resins, India manufactures the grade and issues its technical information. Samrat FRP Traders is the Nepal supplier and importer and handles enquiries; price, packaging, lead time and stock in Nepal are confirmed on enquiry.
Contact Samrat FRP Traders