Screw advance box joint jig using Matthias Wandel plans:
Instead of a guide bar I have it bolted to the sliding table. I put threaded inserts in the table that line up with the jig, so it'll always clamp down in the same place.
![24192223970_aced3964d2_b.jpg](https://proxy.imagearchive.com/fce/fce4b50c07e9ca4457aab31d57efe125.jpg)
![24192222150_66ffecebcc_b.jpg](https://proxy.imagearchive.com/25c/25c473096ef7458e7fb580c658980b52.jpg)
Instead of a guide bar I have it bolted to the sliding table. I put threaded inserts in the table that line up with the jig, so it'll always clamp down in the same place.