Time & Labor Savings:XTC-3D® fills in 3D print striations and creates a smooth, high gloss finish. The need to post finish is almost eliminated. Coat any 3D Print Surface - XTC-3D® can be applied to both SLA and SLS prints. It works with PLA, ABS, Laywoo, Powder Printed Parts and other rigid media. It also can be used to coat EPS, EPDM and urethane foam as well as wood, plaster, fabric, cardboard and paper. Hi Edel, I have used XTC but have not experienced your problem. Indeed the results have been excellent. Th eonly problem I suffered, on non horizontal surface was the coating creating "runs" and it took some practice to overcome that. Measuring and Dispensing – You need to be accurate in measuring for XTC-3D® to cure properly. Parts A and B can be measured by either volume or weight. Dispense proper proportions of parts A and B into clean plastic, metal or wax-free paper containers (do not use foam or glass cups). Applying a Release Agent – For applications where adhesion is not desired, a spray release Ease Release® 200 available from Smooth-On may be used.

Before you start working with the material, you should be well prepared for the job. The XTC-3D has a very short curing time after mixing, and therefore after mixing the components it is best to begin coating the model with the resin immediately. You should also pay attention to such details as how you are going to hold the model, or what is it going to be attached to. The material takes at least two hours to dry, so holding it by an appendix which you have just covered with resin is out of the question. Although it may seem obvious, keep it in mind from the start – otherwise you will have to paint the model in parts (which is sometimes inevitable anyway). XTC 3D is for those people who dont want to risk their life for an stupid method how to clean 3D Prints The XTC-3D can be spread on the model with ease and the process resembles regular painting. It is diluted enough so that there is no problem with even applying it to the model, and it is dense enough that it does not drip of while painting (though in the course of drying it does a little – though only from the fragments which are at high angles towards the ground, about 75-90º). Adding Fillers - A variety of dry fillers can be added such as Cast Magic™ or bronze or other metal powders, Glow Worm™, Quarry Tone™ or Ure-Fil™ powders. The maximum filler load is an amount equal to Part A by volume. Pre-mix filler with Part A before combining with Part B.

Certainly for me the first two or three I did were not 100% perfect and I needed some more attempts before I was able to prevent the "runs" appearing. This is a pic of a part which subsequently had to be spray painted by the customer and it is entirely smooth. It was printed with .300 layers and a 8mm nozzle. The .stl was created from a scan which introduced some imperfections, not present in in the final Solidworks model. Preparation – Materials should be stored and used in a room temperature environment (23°C). Elevated temperatures will reduce Pot Life. XTC-3D® Part A resin and Part B Hardener must be properly measured and thoroughly mixed to achieve full, high-strength, solid-cure properties. Adding Fillers: A variety of dry fillers can be added such as Cast Magic® or bronze or other metal powders, Glow Worm®, Quarry Tone® or Ure-Fil® powders. The maximum filler load is an amount equal to Part A by volume. Pre-mix filler with Part A before combining with Part B.

Personally I will say follow the instructions and you will not go wrong; that includes measuring very carefully, to the instructions, the volumes you mix together. Interesting comment from @phantom on temperature; I have always applied it in a room with a minimum temp. of 20c.

Guide

Applying a Release Agent – For applications where adhesion is not desired, a spray release Ease Release™ 200 available from Smooth-On may be used. P303+P361+P353 - IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

Preparation: Materials should be stored and used in a room temperature environment (73°F/23°C). Elevated temperatures will reduce Pot Life. XTC-3D Part A resin and Part B Hardener must be properly measured and thoroughly mixed to achieve full, high-strength, solid-cure properties. Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question. One issue was that whilst smooth it did not look great to the end customer so we added some of the XTC colouring to the mix. As you can see the 3D printed layer lines etc. have disappeared. Measuring and Dispensing: You need to be accurate in measuring for XTC-3D to cure properly. Parts A and B can be measured by either volume or weight. Dispense proper proportions of parts A and B into clean plastic, metal or wax-free paper containers (do not use foam or glass cups). Painting – XTC-3D™ can be painted and/or primed and then painted with acrylic enamel paints. For best results, lightly sand surface prior to painting.I think this is down to experience to get it right - On my first few attempts I was suffering on runs on non-horizontal surfaces (good finish where it did not run though)so I gradually loaded the brush with less XTC 3D until I got to a point where I did not get runs.