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

✨ Elevate your 3D prints & cosplay with a flawless, glossy armor! 🛡️

RAPID CURE TIME - Hardens to a durable shell in just 3.5 hours—get your projects ready faster and impress instantly.
EFFORTLESS APPLICATION - Mix 2A:1B by volume with included tools; smooth brush-on formula eliminates brush strokes and fuss.
IMPACT RESISTANT SHIELD - Delivers an 80D Shore Hardness finish that resists scuffs and scratches, protecting your masterpiece.
PRECISION SMOOTH FINISH - Clear epoxy self-levels flawlessly for a mirror-like shine on all 3D prints and cosplay props.
UNIVERSAL COMPATIBILITY - Works seamlessly on SLA, SLS, PLA, ABS, foam, and more—one coating to rule all materials.

Smooth-On XTC-3D™ is a high-performance, clear epoxy coating designed to smooth and protect 3D printed parts and cosplay materials. With a quick 10-minute working time and a hard, impact-resistant cure in 3.5 hours, it delivers a durable, glossy finish compatible with a wide range of substrates including SLA, SLS, PLA, ABS, and foam. Its self-leveling formula ensures a brush-stroke-free surface, making it the go-to topcoat for professionals seeking both aesthetic perfection and robust protection.

Specifications

ASIN	B01BKSLI9M
Best Sellers Rank	#30,343 in Automotive ( See Top 100 in Automotive ) #404 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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