Resizing a line drawn with the Pencil tool without it change the stroke size?

[Jen Firth]

Hello support

This would be easier to describe over the phone , but as this is not possible; here goes:

I have handwritten text that I have written using the pencil tool. 

I would like to resize this text to maintain the way it looks from A4 say to A3. I need it to look the same, but I am finding that if I resize by dragging on the corner it 'thins' the line. The effect I am looking for is like enlarging/zooming in on a photo rather than stretching, if I had a photocopier (showing my age) I would increase to like 200%? So I was wondering, do I need to export the original as a .jpeg and import it into Photos and then enlarge it there (does Photos even do this)? Can I enlarge by percentage of the whole thing in designer?

I have been using the Constraint tool, which preserves the shape - but that also preserves the stroke pt so as it grows the line becomes thinner - I think I need the stoke pt to increase in size proportionally to the position of the nodes???

I have read through some of the responses to questions on this forum; so caveat - I am not a power user, I am at SAHM who has a side hustle, so be kind to me for asking a "stupid" question.

Thanks

[Old Bruce]

59 minutes ago, Jen Firth said:

I would like to resize this text to maintain the way it looks from A4 say to A3. I need it to look the same, but I am finding that if I resize by dragging on the corner it 'thins' the line

There is a check box in the Strokes panel which will keep the thickness of the line proportional to the overall size of the line/curve

[Jen Firth]

Perfect. This is exactly what I needed.

I would never have found that setting without you help.

Thanks very much.