# Using swep command in CGX
**URL:** https://calculix.discourse.group/t/using-swep-command-in-cgx/1841
**Category:** CalculiX GraphiX
**Created:** [September 25, 2023, 11:06am UTC](https://calculix.discourse.group/t/using-swep-command-in-cgx/1841 "2023-09-25T11:06:20Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Aly](https://calculix.discourse.group/u/Aly)
#### Post date: [September 25, 2023, 11:06am UTC](https://calculix.discourse.group/t/using-swep-command-in-cgx/1841/1 "2023-09-25T11:06:20Z")
Hello CalculiX users, I wanted to create a hollow circular disc with zero thickness using cgx, in order to do that I drew a line segment and then used swep command to revolve it around an axis by 360 degrees. Such a way results in two overlapping line segments.. how to avoid such a problem, thanks in advance
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### Author:  [@dichtstoff](https://calculix.discourse.group/u/dichtstoff)
#### Post date: [September 25, 2023, 11:35am UTC](https://calculix.discourse.group/t/using-swep-command-in-cgx/1841/2 "2023-09-25T11:35:30Z")
you can use the command:
merg l all
after creating geometry
or your create the lines, and with the lines the surfce
wbr
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### Author:  [@Aly](https://calculix.discourse.group/u/Aly)
#### Post date: [September 25, 2023, 11:40am UTC](https://calculix.discourse.group/t/using-swep-command-in-cgx/1841/3 "2023-09-25T11:40:10Z")
Won’t that remove the generated surface?
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### Author:  [@dichtstoff](https://calculix.discourse.group/u/dichtstoff)
#### Post date: [September 25, 2023, 11:40am UTC](https://calculix.discourse.group/t/using-swep-command-in-cgx/1841/4 "2023-09-25T11:40:37Z")
try it !
maybe you have to merg your points first:
merg p all
merg l all
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### Author:  [@xyont](https://calculix.discourse.group/u/xyont)
#### Post date: [September 25, 2023, 3:59pm UTC](https://calculix.discourse.group/t/using-swep-command-in-cgx/1841/5 "2023-09-25T15:59:06Z")
alternatively, it can be use merging nodes by command `merg n all` after mesh is generated.
