A simple circular saw guide can make woodworking much easier. But what happens when you keep improving the design?

In this video, I build several DIY circular saw jigs, discover their problems, and improve them step by step.

Starting with a simple straight-cutting guide, I develop more advanced designs with adjustable angles, replaceable cutting edges, and a sliding guide rail.

The final jig makes it easy to cut wood accurately, handle different material thicknesses, and make repeated cuts efficiently.

And surprisingly, it can even be used with a router!

I also share some practical workshop tips, design mistakes, and improvements I've learned along the way.

I hope these ideas inspire your next woodworking project!

🛠️ *Plans & 3D Models*
https://jsk-koubou.stores.jp/

・Router table
Make a Router table / trimmer table
・Router Circle-Cutting Jig
【DIY】 ​Extendable Circle Cutting Router Jig

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#Woodworking #CircularSaw #DIYJig #WoodworkingJigs #JSKStudio