How is this better than other epoxy products? Specifically, west systems epoxy?

I don't think there's anything you can do with this that you couldn't do with WEST System if you were determined enough, but it certainly wouldn't be my first choice for smoothing a 3D print. This stuff is very runny by the standards of epoxy, which lends itself to very thin coats that are less likely to build up in small crevices and wash out fine details. That said I'm sure it's also nowhere near as good an adhesive.

Does this product effect the overall dimensions/tolerances of the print? Enlarge or shrink features?

It is a coating that adds appreciable thickness. It will enlarge all external dimensions and can cover up fine features if not used carefully. The effect on tolerance can be reduced by applying thin layers and sanding any remaining grain down.

Type of paint suggestions?

Acrylic / enamel paints work best.

This is a very random question, but can this epoxy also be used to seal cracks and knots in wood?

Our Tarbender may be a better choice for this - it is designed as a bar top epoxy, thought the XTC-3D will work as well, the Tarbender is a clearer material.

Smooth On Xtc 3d 3d Print Coating And Smoothing Epoxy

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Description

✨ Transform your 3D prints from prototype to masterpiece with flawless, durable shine!

EFFORTLESS APPLICATION - Self-leveling epoxy ensures a smooth, brushstroke-free top coat every time—no touch-ups needed.
UNIVERSAL COMPATIBILITY - Perfect for SLA, SLS, PLA, ABS, Laywoo, and powder prints—versatility that fits your creative flow.
PROFESSIONAL GRADE RESULTS - Elevate your 3D prints to showroom quality with a crystal-clear, high-performance finish.
PRECISION SMOOTHING IN MINUTES - Achieve flawless, uniform surfaces with a quick 10-minute working window.
DURABLE IMPACT RESISTANT FINISH - Cures in just 3.5 hours to a tough 80D Shore Hardness coating that protects your prints.

Smooth-On XTC-3D™ is a high-performance, clear epoxy coating designed to smooth and protect 3D printed parts. Compatible with a wide range of materials including SLA, SLS, PLA, and ABS, it offers a 10-minute working time and cures to a hard, impact-resistant finish in 3.5 hours with an 80D Shore Hardness. Its self-leveling formula delivers a uniform, brushstroke-free surface, making it the go-to choice for professionals seeking polished, durable results.

Specifications

ASIN	B01BKSLI9M
Best Sellers Rank	#17,807 in Automotive ( See Top 100 in Automotive ) #281 in Automotive Paints & Primers
Date First Available	February 8, 2016
Item Weight	10.2 ounces
Item model number	xtc3d
Manufacturer	Smooth-On, Inc.
Product Dimensions	2 x 3.5 x 6.8 inches

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