<p>Are there any techniques for getting a smooth finish for parts printed with co-polyester (PET) filaments? More specifically, I am looking for an alternative that does not roughen the look of the part - such as using sandpaper - but rather works like acetone baths for ABS.</p>

<p>In particular, I want to treat ColorFabb's XT filament made from the <a href="http://www.eastman.com/Markets/3D_Printing/Pages/Products.aspx" rel="nofollow">Eastman Amphora™ 3D polymer</a> (<a href="http://ws.eastman.com/ProductCatalogApps/PageControllers/ProdDatasheet_PC.aspx?Product=71100831&amp;sCategoryName=Generic" rel="nofollow">datasheet</a>). This is also the polymer is also used in:</p>

<ul>
<li>ColorFabb <a href="http://colorfabb.com/co-polyesters" rel="nofollow">nGen and XT</a></li>
<li>Taulman3D n-vent</li>
<li>TripTech Athiri 1800</li>
<li>3DXTech 3DXNano</li>
</ul>

[{'answer_id': 328, 'author': 'tjb1', 'author_id': 233, 'author_profile': 'https://3dprinting.stackexchange.com/users/233', 'pm_score': 2, 'selected': False, 'text': '<p>I\'ve found a <a href="http://www.plasticsintl.com/plastics_chemical_resistence_chart.html" rel="nofollow">chart</a> which covers several plastics and solvents and only two of them (<a href="https://en.wikipedia.org/wiki/Chloromethane" rel="nofollow">Chloromethane</a> and <a href="https://en.wikipedia.org/wiki/Chloroform" rel="nofollow">Chloroform</a>) are rated "D" which includes dissolving the material and both seem to be quite nasty and I doubt you will be able to purchase them without being placed on several lists.</p>\n\n<p>Is it possible that something like <a href="http://www.smooth-on.com/Epoxy-Coatings-XTC/c1397_1429/index.html" rel="nofollow">XTC-3D</a> from Smooth-On would work for you?</p>\n\n<p>Also some more information on dissolving PET <a href="https://www.researchgate.net/post/How_do_you_dissolve_polyethyelene_terephthalate_PET" rel="nofollow">here</a>, several sources also mention PET is affected by Hydrogen Peroxide but they do not mention to what degree the plastic is affected.</p>\n'}, {'answer_id': 335, 'author': 'walter', 'author_id': 91, 'author_profile': 'https://3dprinting.stackexchange.com/users/91', 'pm_score': 3, 'selected': True, 'text': '<p>Ethyl acetate (sold as a MEK substitute) is supposed to work for vapor smoothing PET.  It doesn\'t seem very toxic (it\'s used to decaffinate cofee and tea, and as a nail polish remover), but you might want to look more into it.  There\'s a post on Printed Solid\'s blog where he vapor smoothed colorFabb XT and MadeSolid PET+ along with a few other filaments and got some good results.</p>\n\n<p><a href="http://printedsolid.com/blogs/news/37035395-vapor-smoothing-3d-printed-parts-pla-colorfabb-xt-t-glase-pet" rel="nofollow">http://printedsolid.com/blogs/news/37035395-vapor-smoothing-3d-printed-parts-pla-colorfabb-xt-t-glase-pet</a></p>\n\n<p>The links in the blog don\'t work for me, but google was able to find slightly larger versions:</p>\n\n<p><a href="https://cdn.shopify.com/s/files/1/0887/0138/files/blog_2014-03-20-18.38.04-1024x613.jpg?16147388421280943481" rel="nofollow">https://cdn.shopify.com/s/files/1/0887/0138/files/blog_2014-03-20-18.38.04-1024x613.jpg?16147388421280943481</a></p>\n\n<p><a href="https://cdn.shopify.com/s/files/1/0887/0138/files/blog_2014-03-21-18.16.28-1024x612.jpg?9543779874607042697" rel="nofollow">https://cdn.shopify.com/s/files/1/0887/0138/files/blog_2014-03-21-18.16.28-1024x612.jpg?9543779874607042697</a></p>\n'}]
['https://3dprinting.stackexchange.com/questions/319', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/115/']