The 'stroke' of a drawn rectangle

[Nightowl]

I'm using Design to, erm, design a project for my hobby CNC machine.

If I 'draw' a rectangle (circle, trapezoid, etc...) 50mm by 100mm, do I need to take account of the thickness of the lines (I normally use 0.2pt) when exporting the image as an EPS and/or SVG file, please?

I appreciate 0.2pt is next to nothing, but if I use wider lines (e.g. 1pt) would the vector still be 50mm x 100mm when exported?  I'm assuming it will, be, but I just want to make sure.
 

Also, why does exporting as an  EPS default to 85% quality when JPEG compression is enabled?
 

Thanks

[h_d]

7 minutes ago, Nightowl said:

if I use wider lines (e.g. 1pt) would the vector still be 50mm x 100mm when exported?  I'm assuming it will, be, but I just want to make sure.

It's up to you: there's a setting in the Stroke dialog that lets you align to middle, inside or outside:

 

I reckon you'd want 'Inside' to maintain the dimensions of the rectangle. The default is Centre.

 

12 minutes ago, Nightowl said:

why does exporting as an  EPS default to 85% quality when JPEG compression is enabled?

I suspect only the devs could answer that...

 

 

[Nightowl]

Thank you, h_d.

It seems, when exporting the files from Affinity, either in SVG or EPS format, the 'stroke' is also exported as a vector, so there are three for each rectangle!  The size of the box (which is 100mm x 50mm) and the inner and outer limits of the 'stroke'.

I definitely need to remember to remove the spurious vectors when importing these into my CNC software (Vectric VCarve)

[Old Bruce]

2 hours ago, Nightowl said:

I'm using Design to, erm, design a project for my hobby CNC machine.

The CNC is most likely going to be cutting the Rectangle, not necessarily the stroke. If I was doing this I would work with the Stroke always being Centred and blithely ignore the addition of the 0.1pt added to the outside, subtracted from the inside, of the shape.