{"product_id":"smooth-on-xtc-3d-3d-print-smoothing-epoxy-6-4-oz-clear-self-leveling-high-gloss-coating","title":"Smooth-On XTC-3D 3D Print Smoothing Epoxy — 6.4 oz Clear, Self-Leveling High-Gloss Coating","description":"\u003cp\u003e\u003cstrong\u003eSmooth-On XTC-3D™ is a two-part, clear epoxy coating formulated to smooth, seal, and create a hard, impact-resistant finish on 3D printed parts and other rigid substrates.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for makers, prototypers, and small-scale manufacturers, XTC-3D™ provides a low-viscosity, self-leveling surface coat that fills layer lines, wets out detail, and cures to a durable, high-gloss finish. It works across a wide range of printing processes and materials — including SLA, SLS, PLA, ABS, Laywoo, and powder-printed parts — and delivers an 80D Shore hardness once fully cured. With a 2A:1B mix ratio by volume and about 10 minutes of working time, it’s built to be efficient for small batches and touch-ups while providing excellent coverage and resistance to impact.\u003c\/p\u003e\n\n\u003ch3\u003eHow does XTC-3D™ improve the look of 3D prints?\u003c\/h3\u003e\n\u003cp\u003eXTC-3D™ smooths visible layer lines and creates a continuous, glossy surface that highlights detail while minimizing sanding. Its self-leveling formulation reduces brush marks and flows into recessed areas to produce a uniform appearance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFills and conceals layer ridges for a cleaner finish\u003c\/li\u003e\n  \u003cli\u003eSelf-leveling to reduce brushing artifacts\u003c\/li\u003e\n  \u003cli\u003eClear gloss enhances colors and painted finishes\u003c\/li\u003e\n  \u003cli\u003eCompatible with many common print materials for wide use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the application and cure times I should expect?\u003c\/h3\u003e\n\u003cp\u003eMix at a 2:1 ratio by volume and work quickly: the mixed epoxy gives about 10 minutes of usable pot life depending on temperature. It reaches a hard, impact-resistant state in roughly 3.5 hours, though full mechanical properties develop over longer ambient cure times.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMix ratio: 2 parts A to 1 part B by volume\u003c\/li\u003e\n  \u003cli\u003eWorking time: ~10 minutes at room temperature\u003c\/li\u003e\n  \u003cli\u003eInitial cure to handleable hardness: around 3.5 hours\u003c\/li\u003e\n  \u003cli\u003ePost-cure properties increase with extended room-temperature cure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich printing materials and part types are best suited for this epoxy?\u003c\/h3\u003e\n\u003cp\u003eXTC-3D™ adheres well to rigid substrates commonly used in additive manufacturing, including SLA and SLS resins, thermoplastics like PLA and ABS, Laywoo, and powder-printed objects. Because surface chemistry varies, a small test on the intended material is recommended before coating a final part.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with SLA, SLS, PLA, ABS, Laywoo, and many rigid media\u003c\/li\u003e\n  \u003cli\u003eNot intended for extremely flexible or highly porous substrates without testing\u003c\/li\u003e\n  \u003cli\u003ePerform a small-scale compatibility test before full application\u003c\/li\u003e\n  \u003cli\u003eTechnical bulletin available on the Smooth-On website for specifics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I apply XTC-3D™ for best results?\u003c\/h3\u003e\n\u003cp\u003eApply with a brush, squeegee, or pour method to allow the epoxy to self-level and wet out surfaces uniformly. Work in thin, even coats and monitor pot life — thicker pours increase heat and shorten working time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStir components separately, then combine and mix thoroughly\u003c\/li\u003e\n  \u003cli\u003eApply thin, even coats to avoid excessive exotherm and runs\u003c\/li\u003e\n  \u003cli\u003eUse gloves and eye protection; work in a ventilated area\u003c\/li\u003e\n  \u003cli\u003eSanding between coats can help with adhesion for multi-coat builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: XTC-3D™ is ideal for hobbyists, professional model-makers, product designers, and small production shops that need a reliable, clear topcoat to smooth and strengthen 3D printed parts. It’s particularly useful when you want a fast-curing, high-gloss finish that preserves fine detail and improves impact resistance. Before committing to a final piece, test your specific substrate and follow the Smooth-On technical bulletin for optimal mixing, application, and safety guidance.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can XTC-3D be used over PLA and ABS?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. XTC-3D adheres to PLA and ABS, but perform a small test first to confirm compatibility and adhesion on your specific filament and print conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long before painted parts can be handled?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Parts reach handleable hardness in about 3.5 hours; full mechanical strength improves over additional cure time. Temperature affects cure speed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Smooth-On","offers":[{"title":"Default Title","offer_id":48087201841310,"sku":"B01BKSLI9M","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/smooth-on-xtc-3d-front-6-4-oz.jpg?v=1785918765","url":"https:\/\/northtrailauto.ca\/products\/smooth-on-xtc-3d-3d-print-smoothing-epoxy-6-4-oz-clear-self-leveling-high-gloss-coating","provider":"North Trail Auto","version":"1.0","type":"link"}