# New to printing ABS with initial bad surface finish

**URL:** https://forum.lulzbot.com/t/new-to-printing-abs-with-initial-bad-surface-finish/2116
**Category:** Filament
**Created:** [August 12, 2015, 8:03am UTC](https://forum.lulzbot.com/t/new-to-printing-abs-with-initial-bad-surface-finish/2116 "2015-08-12T08:03:13Z")
**Posts on this page:** 4
**Page:** 1

<div class="post-metadata">

### Author: ![Billy\_G](https://avatars.discourse-cdn.com/v4/letter/b/c5a1d2/32.png) [@Billy\_G](https://forum.lulzbot.com/u/Billy_G)
#### Post date: [August 12, 2015, 8:03am UTC](https://forum.lulzbot.com/t/new-to-printing-abs-with-initial-bad-surface-finish/2116/1 "2015-08-12T08:03:13Z")

</div>

Hi Folks,

I’m new to using ABS previously only using PLA in my prints. My dilemma is the the initial layers have a really bad surface finish then improving further up the print. I have a taz 5 and used the presetting of 240 hot end and 110 for the bed with 40% fan speed,100% flow, 100% fill, running at 1000mm/s, I’m thinking i might benefit from turning the fan right down / off?

Thanks in advance

 ![IMG_1851.JPG](https://us1.discourse-cdn.com/flex020/uploads/lulzbot/original/2X/3/34fc79a7abfe15d7c5bfe3ba0022b1060c6fc4e8.jpeg)  
 ![IMG_1850.JPG](https://us1.discourse-cdn.com/flex020/uploads/lulzbot/original/2X/2/2c8f0b4cb5618eaacee7edc6aaa1fb069ae7c521.jpeg)

---

<div class="post-metadata">

### Author: ![joshuanapoli](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/joshuanapoli/32/9259_2.png) [@joshuanapoli](https://forum.lulzbot.com/u/joshuanapoli)
#### Post date: [August 16, 2015, 2:05am UTC](https://forum.lulzbot.com/t/new-to-printing-abs-with-initial-bad-surface-finish/2116/2 "2015-08-16T02:05:34Z")

</div>

Maybe the upper layers have a better surface due to slower speed (minimum layer time).

---

<div class="post-metadata">

### Author: ![piercet](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/piercet/32/12_2.png) [@piercet](https://forum.lulzbot.com/u/piercet)
#### Post date: [August 16, 2015, 2:20am UTC](https://forum.lulzbot.com/t/new-to-printing-abs-with-initial-bad-surface-finish/2116/3 "2015-08-16T02:20:00Z")

</div>

No fan at all for abs unless printing extremely small things or bridging. You also might be overextruding . check the filament diameter and adjust accordingly. Also turn the infil down a bit if you are trying to print near 100%

---

<div class="post-metadata">

### Author: ![TD-Linux](https://avatars.discourse-cdn.com/v4/letter/t/ce7236/32.png) [@TD-Linux](https://forum.lulzbot.com/u/TD-Linux)
#### Post date: [August 22, 2015, 12:12am UTC](https://forum.lulzbot.com/t/new-to-printing-abs-with-initial-bad-surface-finish/2116/4 "2015-08-22T00:12:52Z")

</div>

This looks like extreme overextrusion and maybe too high of temperature. On my mini I have to print at like 80% extrusion.