HO Scale Brick Walls

My Father is currently in the process of making a model railway, and he asked me to design some brick walls, pillars and arches that he can print and use.
Most files are designed to be done via resin printer, unsure if it will work on fdm printer.
These brick walls can be used for any scale, you may want to size up or down the Scale tester piece before you begin your prints so you know how to scale it.
On these files the bricks are 3mm in length and 1.1mm in height, (if that helps)
Hope others can use these files, I will constantly be adding to this, so look out for new uploads