Not printing boundary

Hey all,

I am trying to print an extremely expensive material through a custom 3d printer nozzle.

In order to reduce wastage, I would like to not print the boundary of the shape I want to print (See red region in the diagram).

Is there any way to disable printing this?

I am using a Reprap Prusa i3 clone controlled by Repetier Host on a PC.

Thanks.

It is called a "skirt" in most slicers, you can disable that in the slicer.

OK thanks!

But without it your first layer may be incomplete,,, resulting in a failed print.

Quote
Dust
But without it your first layer may be incomplete,,, resulting in a failed print.

yes, the skirt is used to prime the hotend...

Instead of removing the skirt shorten the length of it.

Another problem I have faced is the footprint of the model first layer is too big and when the skirt is on it goes outside the bed boundary.
you can in that case have the skirt very close to the print, on one recent print my footprint was 217mm across and I had my skirt 0.5mm from my print, my bed is 220mm wide.

You should keep your skirt to prime your hot end as others have said, modify else where if you can.

With expensive filament, I would even add a brim to be 99% sure my print is succesful.