Using this on Remote control car body in order to make it harder stiff and less resistant to bending at speed will this get hard applied to plastic?

Polyesters will not stick to most plastics.

Can you apply rubbing compound after sanding this product?

Yes. To get this super smooth and shiny I would recommend wet sanding starting at around 220 or 320 and work your way up to about 1200. Then start with the rubbing compounds. The other way is to use a product called duratec high gloss additive and spray the gelcoat. Then you won’t have to do as much wet sanding.

Do i need to use a product to make this thicker like paste to fill the holes and cracks?

Yes, you can use cabosil to thicken the gelcoat.

Yes this can be brushed. Keep in mind that when brushing it will leave the brush marks. Sometimes its better to roll it on. If you want a nice smooth surface you will have to wet sand and polish afterwards.

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Black Gelcoat with Wax & MEKP Hardener – UV-Resistant Marine Gelcoat for Interior & Exterior Use

Product ID: 451009358

⚡High strength & 5.5-6.5% tensile elongation

🎨Compatible with polyester resin pigments

🛡️Superior water & blister resistance

$80.91

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Description

🖤 Seal it strong, shine long – the black gelcoat pros trust!

ALL IN ONE KIT - Includes hardener, measuring cup & catalyst chart for precision
PATCH LIKE A PRO - User-friendly application ideal for quick repairs and touch-ups
EFFORTLESS COVERAGE - High-viscosity formula covers 12.5 sq ft per pint with ease
DURABLE WEATHERPROOF - Exceptional water and blister resistance for outdoor longevity
FLAWLESS FINISH ZERO CRACKS - High tensile elongation prevents cracking under stress

Fiberglass Supply Depot Black Gelcoat with Wax Pint includes 15cc MEKP hardener and tools for precise application. Its NPG/Isophthalic polymer backbone delivers high strength, excellent water and blister resistance, and 5.5-6.5% tensile elongation to prevent cracking. The high-viscosity black gelcoat covers approximately 12.5 square feet per pint and is compatible with polyester resin pigments, making it perfect for durable, professional-grade exterior repairs and finishes.

Specifications

ASIN	B0B4352VLX
Best Sellers Rank	#81,666 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #71 in Boat Painting Supplies
Brand Name	Fiberglass Supply Depot
Customer Reviews	4.3 4.3 out of 5 stars (112)
Date First Available	June 14, 2022
Item Package Dimensions L x W x H	6.5 x 4.25 x 4.25 inches
Manufacturer	Fiberglass Supply Depot Inc.
Package Weight	0.73 kg

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$80.91

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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TrustScore 4.5 | 7,300+ reviews

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Very reliable shop with genuine products. Will definitely buy again!

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Great price for an authentic product. Fast international shipping too!

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