[Clipping border texture out of rectangle?]

I have rectangles with a textured border (See below). Is there a way to clip the border out but keep the texture around the rectangle? I need to export these rectangles without any border for the printer but keeping the same textured look. I'd like to avoid using a brush and making out the rectangle manually.

 

Any tips? Thanks!

[Texture Brushes for Affinity Designer]

Thanks Stuart! :)

[Affinity Designer Customer Beta (1.5 - Beta 4)]

Resizing slice on export, please! :)

[Intuos Bamboo pen makes text layers when using brush]

I am having problems with my Intuos Bamboo tablet in Designer. When using the brush tool it creates a text layer from the stroke. A yellow notepad image shows up when brushing around and then the text layer is made.

 

What am I doing wrong? :)

 

Thanks!