Bandsaw circle cutting jig

we cut two quarter circles with the same center using the bandsaw circle cutting jig

We built this bandsaw circle cutting jig because we always look for solutions to reduce work time and to increase the quality of our work. We had to cut some perfect quarter circles for an MDF project. We built the cutting jig so that we can cut the MDF board quickly and with high accuracy.

You can see more details about how we built it and how good it works in our video:

How we built the bandsaw circle cutting jig and how we cut circles using it

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Sometimes the most complicated woodworking operations need simple solutions. So was in this case. This simple round cutting jig needs 5 working minutes and just a few things:

  • a scrap MDF board
  • a block of wood
  • two F or C clamps
  • two screws
in order to build the bandsaw circle cutting jig we used a scrap piece of mdf board, a small block of wood, two C clamps and two screws
A scrap MDF board and a small wooden block

1. First, I took the MDF board and I cut it halfway. I stopped the bandsaw. I took care to keep the board still until I clamped it on the bandsaw table

we cut the scrap board halfway being careful to keep the board still after we stop the bandsaw
We cut the board halfway

2. I clamped the board on the bandsaw table with a C clamp at one end.

in one end of the table we used only a clamp in order to keep the board in its place
One end of the board clamped on the bandsaw table

3. At the other end, I had to use a small block of wood because the underneath of the table was not even. I wanted to make sure the clamp stays put. I clamped the block to the side trying to keep it flush to the table

for the other end of bandsaw table we used a block of wood held on its place with a clamp
We used a block of wood to keep still the board on the table

4. I drilled a hole in the MDF board and through the block of wood and countersunk it, to hide the screw head. I secured the MDF board with a screw.

we deepened the screw holes in order the screw heads not to tangle us when pushing the board we want to cut
I countersunk the screw hole

Now the board is secured to the bandsaw table.

we clamped the scrap board on the band saw table in order to keep still during the cutting process
We secured the board to the bandsaw table, with C clamps

5. I drew two points (we needed to cut two circles, each with a different radius). The distance between the bandsaw blade and the drawn points was equal with the radius of each circle.

we measured the circle's radius
We marked the circle’s radius

6. I measured the distance between the bandsaw blade and the edge of the MDF board.

we measured the distance to the bandsaw blade in order to find the place of the pilot holes
Measuring the distance from the bandsaw blade to one edge of the board

7. I measured the same distance next to the points previously drawn. These marks represented the centers of the circles.

we established the places for the pilot holes on the board of our bandsaw circle cutting jig
I marked the pilot holes

8. I drilled two pilot holes (one for each size of the circle I needed to cut) slightly smaller than the screw I wanted to use.

we drilled pilot holes into the board used for the bandsaw circle cutting jig
Drilling holes into the board
we drilled the second pilot hole because we wanted to cut two quarter circles using the same center
We drilled the second pilot hole

9. I drilled the center hole into the board I needed to cut. I needed two quarters of circle on the same board, with the same center.

we drilled a hole in the center of the board we wanted to cut with the bandsaw circle cutting jig
I drilled a hole in the middle of the circle

10. I first screwed the MDF board to the cutting jig in the hole for the quarter circle with a larger diameter.

we started to cut a quarter circle using the bandsaw circle cutting jig
Starting the cut of the circle using the bandsaw circle cutting jig
this is the way you can easily cut a circle by using the bandsaw cutting jig
I easily cut the circle using the bandsaw cutting jig

11. I repositioned the board on the bandsaw circle cutting jig and I cut the quarter circle with the smaller diameter.

we cut two quarter circles with the same center using the bandsaw circle cutting jig
We used the bandsaw circle cutting jig to cut two quarter circles with the same center

I used a thin bandsaw blade because these kind of blades are made for round cuts. I progressed as fast as possible, yet letting the blade do its job, not forcing it. This would have resulted in a more wobbly cut.

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