Hello friends.
This is the official channel of JSK-koubou.
Here you can find many interesting videos about homemade machinery, woodworking projects, plans and life hacks.

I made a sharpening jig that makes the drill bit sharper than new drill.
This jig will be distributed free of charge to those who have purchased a grinder stand plan.

Click here for grinder stand plans
https://jisaku-koubou.com/downloads/a...

[Plan List]
https://jsk-koubou.stores.jp/