# First time with Dual Extruder
**URL:** https://forum.lulzbot.com/t/first-time-with-dual-extruder/5199
**Category:** Filament
**Created:** [September 19, 2017, 5:57pm UTC](https://forum.lulzbot.com/t/first-time-with-dual-extruder/5199 "2017-09-19T17:57:52Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Dremark](https://forum.lulzbot.com/u/Dremark)
#### Post date: [September 19, 2017, 5:57pm UTC](https://forum.lulzbot.com/t/first-time-with-dual-extruder/5199/1 "2017-09-19T17:57:52Z")
So I just started using the dual extruder to save on filament and my results are horrible. My first print went fairly well however I had a LOT of clumping and melting as the nozzle just sat on the filament while the other end was spinning:
[https://imgur.com/a/9Qvv0](https://imgur.com/a/9Qvv0)
The second round was a complete bust as these were the results 5min into printing:
[https://imgur.com/a/yK8v6](https://imgur.com/a/yK8v6)
What am I doing wrong?
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### Author:  [@kcchen\_00](https://forum.lulzbot.com/u/kcchen_00)
#### Post date: [September 20, 2017, 3:37am UTC](https://forum.lulzbot.com/t/first-time-with-dual-extruder/5199/2 "2017-09-20T03:37:56Z")
Looks like overextrusion to me… try reducing the flowrate % in the slicing program. 95% works well for me in most cases… but step down by small increments.
Ultimately, you’ll want to check the esteps on the extruders. Speaking of which, make sure the esteps are entered after flashing the dual extruder firmware.
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### Author:  [@Dremark](https://forum.lulzbot.com/u/Dremark)
#### Post date: [September 20, 2017, 11:27am UTC](https://forum.lulzbot.com/t/first-time-with-dual-extruder/5199/3 "2017-09-20T11:27:11Z")
I calibrated the E-steps after installing the head and flashing the firmware. I’ll tweak the extrusion a bit and see if that helps. Thanks 😃
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### Author:  [@kcchen\_00](https://forum.lulzbot.com/u/kcchen_00)
#### Post date: [September 21, 2017, 8:07am UTC](https://forum.lulzbot.com/t/first-time-with-dual-extruder/5199/4 "2017-09-21T08:07:21Z")
It could also be the color and/or type of filament. Varying the flow rate / multiplier % should help the most. Just be careful you don’t under extrude which could cause problems at taller layers. The filament won’t adhere to the previous layer causing delamination or horizontal cracks in the print… more prevalent with ABS due to the contracting nature as it cools.