Acetone smoothing not working on ABSPlus-P430


I am using a STRATASYS Fortus 250mc to 3D print some parts. I have read a lot on internet and also on some scientific literature that Acetone dissolves ABS and cold/hot vapor has been successfully used to smoothen the surfaces. But it doesn't work for me.

I followed the instructions: soaking some papers with Acetone and putting the parts in a closed container with a fan for some time. But it had no effects. Then I tried dipping the parts in Acetone and I observed that they do not react to the substance at all!

Has anybody ever had a similar experience? Maybe ABSPlus-p430 is not soluble with Acetone? in that case what is a solvent for it?

I asked the same question here on Reddit.


Posted 2017-11-08T12:28:51.957

Reputation: 143

2Where did you get your acetone? Are you sure it actually is acetone? I have once been sold "eco-friendly bio-acteone" which turned out to be, well, not acetone but something else entirely. – Tom van der Zanden – 2017-11-08T12:46:49.343

I did not buy it myself. our technician gave it to me. how can I make sure it is really Acetone or not? – Foad – 2017-11-08T12:48:19.387

1I'm not sure of any tests you could do, but perhaps there's some information on the bottle? Do you have a datasheet? Supplier information? – Tom van der Zanden – 2017-11-08T12:50:59.283

The bottle is not the original one. I'm going to bug the technician :) – Foad – 2017-11-08T12:51:52.347

@TomvanderZanden this was apparently the problem. The material given to me seemed to be a environment friendly Acetone used for painting. – Foad – 2017-11-08T13:59:06.960



Make sure that your acetone is actually acetone. According to the MSDS, ABSPlus-P430 is indeed "ABS resin" so acetone smoothing should work. Some companies sell confusingly-labeled products that might be mistaken for acetone, but are actually "eco-friendly" alternatives such as 2-butoxyethanol. While these alternatives work for some of the uses for which acetone is normally used (such as cleaning or degreasing), they don't work for smoothing ABS.

Tom van der Zanden

Posted 2017-11-08T12:28:51.957

Reputation: 14 003