3D printed drill jigs for dowel joints

two 3d printed jigs needed for some dowel joints, so we can build a room divider

We had to build a wooden room divider. We had at least 20 laminated oak wood boards which had to be assembled using dowels. We had to make a lot of end to face grain joints. All the boards had to be positioned at a 10 degrees angle to the edges of the horizontal boards. In the same time, they had to be positioned parallel to each other and perpendicular on the horizontal planks.

this is the wooden room divider made by using the drilling jigs for dowel joints
The wooden living room divider

As you can see, we needed a lot of perfect holes. To make all these repetitive drilling, we printed our first dowel jig to drill quickly, easy and accurate. These two 3D printed drill jigs helped us a lot:

  • we printed one jig for drilling the holes into the boards’ ends
the 3d printed drill jigs for drilling holes into the end grain of the board
This jig for dowel joints was used to drill holes into the end grain of the boards
  • the other one was printed to drill the holes onto the face of the horizontal boards.
the dowel jig for drilling 2 holes into the face of the boards at 10 degrees to the edge of the board
With this 3D printed jig for dowel joints we drilled the holes into the face grain of the horizontal boards

Each jig has 2 holes. We made 4 short pieces of steel pipe and glued them in the printed jigs. The steel pieces were used as bushings to hold the drill bit in the right position. We also used them to avoid drilling the printed jigs. We chose the size of the steel rod taking into consideration the size of the wooden dowels and the drill bit.

two 3d printed jigs needed for dowel joints, so we can build a room divider
The two 3D printed dowel jigs

The dowel jig for drilling holes into the ends has two larger edges. That way we could position the jig quickly and we also could fix it with two spring clamps in no time.

the 3d printed jig for dowel joints has two larger edges
The dowel jig has two larger edges to hold it with two spring clamps
the dowel jig is positioned on the end of the oak wood board to drill the two holes
The dowel jig is positioned on the end of the oak wood board
we positioned the dowel jig on the end of the board
The dowel jig is positioned on the end grain of the oak wood board

The repetitive holes were drilled very quickly and the result was the same, each time. The holes are positioned at the same distance to the edges and the wooden dowels are positioned perpendicular to the ends.

the holes are perfect and they are drilled at the same distance to each edge of the board
The holes drilled with the dowel jig look perfect
the 3d printed drill jig for dowels works great
The drill jigs for dowel joints works great as the wooden dowels are perpendicular to the end of the board
the wooden dowels are positioned perpendicular to the end of the oak wood board
The wooden dowels are perfectly positioned into the holes drilled with our 3D printed jig

The jig for drilling holes onto the face of the horizontal boards has one large edge used as a stopper. The stopper has a 10 degrees angle to the edge of the board. Another purpose of this stopper is that the jig can be held with an F clamp or a spring clamp. This way the jig will not move when drilling the holes.

we positioned the printed jig for dowel joints on the face of the oak wood board
The dowel jig is positioned on the face of the oak wood board
the dowel jig is printed as it can be positioned at 10 degrees to the edge of the oak wood board
The dowel jig for drilling holes into the face of the oak wood board is printed so it can be positioned at 10 degrees to the edge

The holes drilled with this dowel jig are also straight. The distance between the holes and the edges of the board is equal. The wooden dowels are positioned perpendicular to the face of the board. The angle between the boards drilled into the ends and the board drilled onto the face is 10 degrees, as we intended when designing the jig.

the dowel holes are perfectly drilled both into the end and onto the face of the oak woo board due to these two 3D printed jigs
The holes drilled with the dowel jigs perfectly matched

The two boards are perpendicular to each other.

the vertical board is perpendicular, so the dowel joint is perfect
The dowel joint made using the 3D printed jigs

So, the 3D printed drill jigs for dowel joint were used for repetitive drilling holes. In the end, all the vertical boards were perfectly aligned at the same distance to each other and at the same angle, 10 degrees, to the edges of the horizontal boards.

the boards are perpendicular, they are parallel to each other and they are positioned at 10 degrees to the edge of the base board
The dowel joints, end grain to face grain, looks perfect
the dowel jigs work great as the four boards are perfectly positioned
Four oak wood boards positioned on the base board

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