|Project by ca8920||posted 02-17-2015 01:19 AM||3083 views||11 times favorited||3 comments|
I needed to cut circles for a couple of projects so I decided to make a circle cutting jig over the weekend. I reviewed several YouTube videos and combined the best parts of the two that I liked the best to make mine. The jig is basically an MDF sled with a shelf bracket that can be adjusted to set the size of the circle, along with two 1/4” flat headed hex bolts and two 1/4” wing nuts to lock the bracket in place.
Cudos to the Winky’s Working Tips video for the sliding shelf bracket idea, https://www.youtube.com/watch?v=Uem-9Wz1Dt8. I pretty much used Winky’s ideas for the sliding bracket, modifying mine by adding a pop rivet as the pivot pin. With the sliding bracket I’m able to cut circles from a couple of inches up to 6 feet.
Cudos to the WoodWorkers Guild of America video for the sled concept, https://www.youtube.com/watch?v=TIJ79eIYSOo. Rather than having a miter guide, the sled I built has stop guides at each end of the sled that sandwich the sled to the band saw table.
I have a Delta Shopmaster 12” band saw with a modified Kreg fence. The blade on the Delta Shopmaster is removed to the front so I had to cut a section out of the Kreg band saw fence to remove or change the blade. The sled for my jig is cut a bit shorter in depth than the actual band saw table to allow for the Kreg fence and to allow me to slide the jig to match the band saw blade depth.
In tests, lining up the pop rivet with the back of the blade teeth, I cut several 5”, 7” and 10” circles out of plywood, doug fir and redwood without an issue. The jig cuts prefect circles and cuts them easily.
-- Chris, Sparks Nevada, https://www.facebook.com/ArmstrongTouch