I use these blocks for brainstorming placements and adjustments of objects in an N scale train layout. They are scaled at 19.05 mm per 10 feet.

Makes it really easy to visualize how different combinations will fit together while designing, building and customizing permanent models.

Arrange and stack them in different combinations to quickly mock up how different combinations of landscape, buildings and other models will fit together.

I recommend printing a bunch of 5's, 10's and 20's and just stacking them as needed rather than printing the larger ones, but they're there if you want them.

Creality

Ender 3

No

No

.3

10

Being placeholders, super high precision didn't matter to me. If you want them perfect down to the mm, use the highest precision your printer can do

The ones in the photo were printed in Cura's "Extra Fast" mode with default settings.

You might want brims or rafts for the 5 footers if your setup has trouble with plate adhesion