Not too sure about the vocabulary but here is the bicolor icon I am referring to.

This final result should then be used for lazer printing, so I need something simpler.

I'm using GIMP. So far I've tried Select > Grow by 5 pixels then Select > Shrink by 5 pixels again to remove most of the details. But this doesn't make the lines smooth enough.

What is the best method to achieve my goal?

Not too sure about the vocabulary but here is the bicolor icon I am referring to.

This final result should then be used for laser engraving, at roughly 4cm in size, so I need something simpler.

I'm using GIMP. So far I've tried Select > Grow by 5 pixels then Select > Shrink by 5 pixels again to remove most of the details. But this doesn't make the lines smooth enough.

What is the best method to achieve my goal?

Not too sure about the vocabulary but here is the bicolor icon I am referring to.

This final result should then be used for lazer printing, so I need something simpler.

I'm using GIMP. So far I've tried Select > Grow by 5 pixels then Select > Shrink by 5 pixels again to remove most of the details. But this doesn't make the lines smooth enough.

What is the best method to achieve my goal?

Not too sure about the vocabulary but here is the bicolor icon I am referring to.

This final result should then be used for lazer printing, so I need something simpler.

I'm using GIMP. So far I've tried Select > Grow by 5 pixels then Select > Shrink by 5 pixels again to remove most of the details. But this doesn't make the lines smooth enough.

What is the best method to achieve my goal?