UPDATE: New features added! There is now a Plastic Saver option for taller terrains (1 for Plastic Saver and 0 for solid) and a you can also now have random grid heights for uneven and rough terrain, simply input max and min values for the random setting (0 max and 0 min for no random). All of the options for OpenTerrain can be used simultaneously, so you could conceivably have a double incline any-size grid with rough random terrain that saves plastic and has a customized magnet size!

I love the concept of OpenForge. Modular, customized, 3D printed scenery for RPGs. devonjones did a great job, OpenForge 2.0 looks amazing, with magnetic attachments and multiple stories, but unfortunately it is only in stone. Even in OpenForge 1, there was not anything for outside terrain. It was optimized for small grids and hallways, but my Dungeons and Dragons group does almost every quest entirely in the outside, and so castle floors are not so helpful to me.

Hence, OpenTerrain was born! It is based heavily on and designed to be compatible with OpenForge 2.0. With this customizer, you can make parts that are 40x40 grid if you desire (and if you have a printer that size). Print the base and the terrain, glue them together and you are good to go! Here is the link to OpenForge2.0 (http://www.thingiverse.com/thing:1276680) which shows how everything works!

You can use 5mm ball magnets in the bases to attach the grids magnetically, or simply just put the grids next to eachother without bases and create epic gaming layouts!

As an added bonus, you can make sloped terrain pieces by changing the 'incline' settings. You can also input the size (diameter) in mm of the spherical magnets. If you want to use these with OpenForge, here are the settings NOT to change: gridsize gridheight height base_height

This could also be used for games like Heroclix if you increase gridsize!

Remixes are welcome!

If you have any ideas, questions or problems let me know in the comments!