# Any tricks for smoothing ABS lines on fast prints?
**URL:** https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973
**Category:** Filament
**Created:** [November 8, 2014, 9:06pm UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973 "2014-11-08T21:06:33Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Merlin](https://forum.lulzbot.com/u/Merlin)
#### Post date: [November 8, 2014, 9:06pm UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/1 "2014-11-08T21:06:33Z")
I tried using some acetone on a folded paper towel, rubbing my print while the towel is wet repeatedly. It does smooth the surface but leaves it a little lumpy. Sanding does not seem to work much either as it kinda gums up (before applying acetone). There must be a better way!
Any suggestions?
Thanks!
Paul
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### Author:  [@nopick](https://forum.lulzbot.com/u/nopick)
#### Post date: [November 8, 2014, 10:47pm UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/2 "2014-11-08T22:47:30Z")
This works well.
TIP: Shiny Ceramic-like ABS parts with Acetone a…: [http://youtu.be/VvCEnA0NEG4](http://youtu.be/VvCEnA0NEG4)
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### Author:  [@Merlin](https://forum.lulzbot.com/u/Merlin)
#### Post date: [November 12, 2014, 1:58am UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/3 "2014-11-12T01:58:39Z")
thanks nopick… very cool. I will try that as a final step. In the meantime, I rubbed acetone over the entire print using smooth chemical disposable gloves twice. I then followed it by rubbing with a paper towel soaked in acetone… the surface became very smooth.
I also had some cracks in my print. I fixed them by making an ABS slurry, 50% acetone + 50% ABS leftovers. I painted them into the gaps, some 1/8" open, several times and let it set before polishing. This also worked excellent on the seams where i welded parts together.
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### Author:  [@Merlin](https://forum.lulzbot.com/u/Merlin)
#### Post date: [November 13, 2014, 12:56am UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/4 "2014-11-13T00:56:42Z")
Here’s a pic of my latest print, assembled from four Taz 4 prints (chest, thighs, left arm, right arm):
It’s almost finished in the pic above… still have one more round of smoothing the seams left. You can check my progress for the bronze I’m making of it here:
[http://effinger.us/](http://effinger.us/)
or here:
[https://www.facebook.com/EffingerDesignFoundry](https://www.facebook.com/EffingerDesignFoundry)
thanks,
Paul
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### Author:  [@nopick](https://forum.lulzbot.com/u/nopick)
#### Post date: [November 13, 2014, 12:03pm UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/5 "2014-11-13T12:03:42Z")
That is a fantastic print. 😮
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### Author:  [@t0b1as1](https://forum.lulzbot.com/u/t0b1as1)
#### Post date: [November 14, 2014, 11:12am UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/6 "2014-11-14T11:12:10Z")
Great job!
How visible are the seams connecting the parts?
Here is a tutorial for acetone vapor. Just be careful
[http://hackaday.com/2013/02/26/giving-3d-printed-parts-a-shiny-smooth-finish/](http://hackaday.com/2013/02/26/giving-3d-printed-parts-a-shiny-smooth-finish/)
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### Author:  [@Theycallmejohn](https://forum.lulzbot.com/u/Theycallmejohn)
#### Post date: [November 26, 2014, 4:51pm UTC](https://forum.lulzbot.com/t/any-tricks-for-smoothing-abs-lines-on-fast-prints/973/7 "2014-11-26T16:51:07Z")
Very cool.