GIMP and hexes

[Marion]

Greetings

First of all, I would like to thank you all for the extensive resources of this forum and quickly remind that my own map-making or graphic editing skills are close to zero, but I'm trying. I'm trying real hard.
Anyway, a question from novice cartographer regarding GIMP and adding hexes to the map. Using this simple tutorial from your own site https://www.cartographersguild.com/s...ead.php?t=5094 I've managed to get hexes on my map. Thing is - I need two separate grids of hexes. One with each hex 50 pixels wide and another with hexes 500 pixels each.
And GIMP allows to only create 100 px hexes as maximum.
Now I found a work-around for this (basically making new layer 5 times smaller than my needs, covered with 100 px hexes, then stretched it all over the map, giving desired effect), but the work-around has simple problem - the final effect has all the obvious drawback of making something small 5 times bigger, with blury, needlessly thick lines.

So - is there any real work-around for this?