The flipper fingers kind of work in a direction. If the ball falls on the wrong side, they aren't much fun. To keep the ball properly in game, the GuidR is placed beside the flipper finger and guides the ball to it.

Step 1: Build

What you need

5mm MDF

How you do it

Just cut out the .svg file with a laser cutter and assemble the pieces. You're pretty much done.

However, since the GuidR goes on top of the adjacent flipper module, both have to work in a symbiosis. So you might want to adjust the dimensions of the ramp to fit better to your flipper finger.