---
product_id: 26052547
title: "Smooth-On XTC-3D™ 3D Print Coating & Smoothing Epoxy - 6.4 oz"
brand: "smooth-on"
price: "€ 36.89"
currency: EUR
in_stock: true
reviews_count: 8
category: "Smooth On"
url: https://www.desertcart.pt/products/26052547-smooth-on-xtc-3d-3d-print-coating-and-smoothing-epoxy
store_origin: PT
region: Portugal
---

# 10 min working time 80D Shore Hardness glossy coat 3.5 hr cure to impact-resistant finish Smooth-On XTC-3D™ 3D Print Coating & Smoothing Epoxy - 6.4 oz

**Brand:** smooth-on
**Price:** € 36.89
**Availability:** ✅ In Stock

## Summary

> ✨ Elevate your 3D prints to showroom shine — don’t let your projects settle for less!

## Quick Answers

- **What is this?** Smooth-On XTC-3D™ 3D Print Coating & Smoothing Epoxy - 6.4 oz by smooth-on
- **How much does it cost?** € 36.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/26052547-smooth-on-xtc-3d-3d-print-coating-and-smoothing-epoxy)

## Best For

- smooth-on enthusiasts

## Why This Product

- Trusted smooth-on brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Time-Smart Curing:** Fast 3.5-hour cure lets you move from print to polished project in no time—perfect for busy creators.
- • **Durable & Protective:** Cures to a hard, impact-resistant shell that enhances strength and preserves vibrant detail without yellowing.
- • **Precision Mix & Apply:** 2:1 volume ratio with included measuring cup and foam brush for flawless application every time.
- • **Universal Compatibility:** Works seamlessly on SLA, SLS, PLA, ABS, Laywoo, and powder prints—one coat fits all.
- • **Effortless Pro-Grade Finish:** Transforms rough 3D prints into smooth, glossy masterpieces with minimal effort.

## Overview

Smooth-On XTC-3D™ is a high-performance epoxy coating designed to smooth and finish 3D printed parts across multiple materials. With a quick 10-minute working time and a durable, impact-resistant cure in just 3.5 hours, it self-levels to a glossy, hard finish (80D Shore Hardness) that fills layer lines and protects prints without yellowing. Ideal for professionals and hobbyists seeking a fast, reliable way to achieve flawless, display-ready results.

## Description

Smooth-On XTC-3D™ 3D Print Coating & Smoothing Epoxy - 6.4 oz: desertcart.com: Industrial & Scientific

Review: GREAT FOR COSPLAY! - MY LORD. This stuff is super cool!I did not use this to coat 3D printed parts. I personally use it for cosplay purposes. I coated my worbla and some foam pieces in this and it gave it a beautiful shiny smooth coat! It is great as a primer for Worbla as Worbla tends to have a very bumpy texture and with this you only need 1 or 2 coats to get a super smooth surface! It cuts priming time in half if you are used to using classic methods like coating it in 6-8 layers of wood glue! This took around 3-4 hours to cure up. I let it sit overnight. It is important to note that this has no flexibility once fully cured. I tested this on a piece of EVA foam and it just about shattered like glass when I warped the foam. I didn't expect it to NOT do this to be honest. It is resin. It did not flake off. It adheres to the foam. it just left a bunch of cracks all over the place! On pieces that will not bend at all, like weapons or shoulder pieces etc, I think this works well to give your foam pieces a smooth glossy finish. I had already primed my foam with several layers of plastidip before I decided to experiment. Plastidip + XTC-3D does work :). This is super easy to use! If you have used any sort of resin you will already have an idea. You have your resin and hardener. The instructions will explain how to mix but this comes with a handy little mixing cup with measurement markings on the side. It also comes with a foam brush and Popsicle stick for stirring. You will need to have more of these items handy for more than one use! The foam brushes work really well for application. Smooth-On offers online tutorial videos on You-Tube for this specific product. That helped a ton! Have tin-foil on hand to make a tiny pool to sit the product in. This increases the time to apply because letting in sit in the cup will cure up to fast and it'll be hard to apply. You wouldn't get a smooth application in this case! I'd imagine this would also work well as a nice shiny finish over paint! But I find It is SUPER shiny once cured. Almost TOO shiny. If this is not the look you want, you can just simply buff it down by sanding lightly over it. I still prefer a Shellac coating as my final step. With the Prime shipping this was the best deal I could find on this product! I highly recommend this!
Review: Works as intended - I recently purchased this kit, and I couldn’t be happier with the results. This product is perfect for smoothing and finishing 3D prints, taking them from rough to a professional-grade finish with minimal effort. It arrived in perfect condition with all components included, and the instructions were straightforward and easy to follow. The resin itself applies smoothly with the included foam brush, and it cures to a hard, glossy finish that brings out the detail in each print. I noticed that it also fills in small layer lines, making post-processing much easier. Once cured, it provides a durable, protective coating that not only enhances the appearance but also adds strength to the print. Another bonus is that the resin doesn’t yellow over time, so prints keep their fresh, vibrant look. The kit provides a generous amount of product, making it excellent value for the price. I highly recommend this product to anyone looking to take their 3D printed projects to the next level with a high-quality, reliable coating solution!

## Features

- High-Performance 3D Print Coating - Clear top coat for smoothing & finishing 3D printed parts.
- Ideal for application to both SLA & SLS prints, as well as PLA, ABS, Laywoo, Powder Printed Parts, and other rigid media.
- Mix Ratio of 2A:1B by Volume -Working time of 10 minutes - Cures to hard, impact-resistant coating in 3.5 hours - 80D Shore Hardness.
- Epoxy top coating self-levels and wets out uniformly without leaving brush strokes; offers excellent coverage.
- Perform a small-scale test of your project materials to determine suitability and compatibility. Refer to the technical bulletin for more information - available on our website

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01BKSLI9M |
| Best Sellers Rank | #22,106 in Automotive ( See Top 100 in Automotive ) #308 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 |

## Images

![Smooth-On XTC-3D™ 3D Print Coating & Smoothing Epoxy - 6.4 oz - Image 1](https://m.media-amazon.com/images/I/71PSKSVdNBL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How is this better than other epoxy products? Specifically, west systems epoxy?**
A: 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.

**Q: Does this product effect the overall dimensions/tolerances of the print? Enlarge or shrink features?**
A: 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.

**Q: Type of paint suggestions?**
A: Acrylic / enamel paints work best.

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ GREAT FOR COSPLAY!
*by K***O on February 6, 2017*

MY LORD. This stuff is super cool!I did not use this to coat 3D printed parts. I personally use it for cosplay purposes. I coated my worbla and some foam pieces in this and it gave it a beautiful shiny smooth coat! It is great as a primer for Worbla as Worbla tends to have a very bumpy texture and with this you only need 1 or 2 coats to get a super smooth surface! It cuts priming time in half if you are used to using classic methods like coating it in 6-8 layers of wood glue! This took around 3-4 hours to cure up. I let it sit overnight. It is important to note that this has no flexibility once fully cured. I tested this on a piece of EVA foam and it just about shattered like glass when I warped the foam. I didn't expect it to NOT do this to be honest. It is resin. It did not flake off. It adheres to the foam. it just left a bunch of cracks all over the place! On pieces that will not bend at all, like weapons or shoulder pieces etc, I think this works well to give your foam pieces a smooth glossy finish. I had already primed my foam with several layers of plastidip before I decided to experiment. Plastidip + XTC-3D does work :). This is super easy to use! If you have used any sort of resin you will already have an idea. You have your resin and hardener. The instructions will explain how to mix but this comes with a handy little mixing cup with measurement markings on the side. It also comes with a foam brush and Popsicle stick for stirring. You will need to have more of these items handy for more than one use! The foam brushes work really well for application. Smooth-On offers online tutorial videos on You-Tube for this specific product. That helped a ton! Have tin-foil on hand to make a tiny pool to sit the product in. This increases the time to apply because letting in sit in the cup will cure up to fast and it'll be hard to apply. You wouldn't get a smooth application in this case! I'd imagine this would also work well as a nice shiny finish over paint! But I find It is SUPER shiny once cured. Almost TOO shiny. If this is not the look you want, you can just simply buff it down by sanding lightly over it. I still prefer a Shellac coating as my final step. With the Prime shipping this was the best deal I could find on this product! I highly recommend this!

### ⭐⭐⭐⭐⭐ Works as intended
*by U***L on November 13, 2024*

I recently purchased this kit, and I couldn’t be happier with the results. This product is perfect for smoothing and finishing 3D prints, taking them from rough to a professional-grade finish with minimal effort. It arrived in perfect condition with all components included, and the instructions were straightforward and easy to follow. The resin itself applies smoothly with the included foam brush, and it cures to a hard, glossy finish that brings out the detail in each print. I noticed that it also fills in small layer lines, making post-processing much easier. Once cured, it provides a durable, protective coating that not only enhances the appearance but also adds strength to the print. Another bonus is that the resin doesn’t yellow over time, so prints keep their fresh, vibrant look. The kit provides a generous amount of product, making it excellent value for the price. I highly recommend this product to anyone looking to take their 3D printed projects to the next level with a high-quality, reliable coating solution!

### ⭐⭐⭐⭐ Overall this stuff is great. I've been using it to make 3d printed ...
*by D***S on July 27, 2018*

Overall this stuff is great. I've been using it to make 3d printed Mandalorian helmets. It mixes very easily, lasts quite a while on the plate, goes on well, sands easily, and has almost no smell. It's not perfect though, but the marketing for it really, really overstates how easy and good it is. The #1 thing is that when you're applying it, you *must* follow the instructions and keep brushing over it until it finally starts to harden up. This takes ~20-30 minutes or so, during which you're just sitting there brushing and brushing and brushing. If you don't do this, it dries smooth but lumpy and takes a ton of sanding to look good. If you just apply it, and maybe brush over it a few times, it looks like it's going on all nice and smooth, but when you come back an hour or two later (one positive is that it hardens up very nicely and quickly) the surface is going to be a bit like a golf ball. It's not runs or streaks (unless you slap tons of it on, getting drips is very unlikely), it just settles in a weird way, even if it's a second coat over an already smooth area. On the plus side, it does sand very nicely with 220 grit sandpaper. 100 grit is a bit too much unless you do end up with a drip. The end result is going to be good, but the "eliminates 90% of finishing work" moniker really gives you the wrong impression. I've finished 3d printed items with a coat or two of filler primer and gotten excellent results in about five minutes of work, as compared to the hours I've already put into using this stuff. Oh, and before you use it, buy a LOT of foam rubber brushes. Expect to use three or four of them over the course of a half ounce of material, especially with all the constant overbrushing you're going to have to do. After a few minutes the brush will start getting flimsy and if you keep using it, you'll end up with foam rubber bits on your surface. Michaels sells kits of a dozen or more of them for like $5. It works, but it takes a lot of time.

## Frequently Bought Together

- Smooth-On XTC-3D™ 20 Mold Making & Special Effects Silicone Rubber, 3D Print Coating - 6.4 oz
- Rust-Oleum 260510 Stops Rust Automotive 2-in-1 Filler & Sandable Primer Spray, 12 oz, Gray
- Assorted Grit Sandpaper for Wood Furniture Finishing (9 Inch x 3.6 Inch)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-21*