OpenForge 2.0 Cut-Stone Arrow Slit

Cut-Stone Arrow Slits have now been updated to meet the current standards of OpenForge.

For instructions on how to get started with OpenForge, we have a set of [tutorials](https://github.com/devonjones/openforge-tutorials/blob/master/README.md). Want to sell OpenForge prints? Want to use OpenForge designs in your product, check out the [license](https://github.com/devonjones/openforge-tutorials/blob/master/license.md) FAQ.

OpenForge is now a [patron](https://www.patreon.com/masterworktool