front2 = chain 1 [
                probeCorner
                , translate (V3 19.8 54.2 0) $ drill (10+0.5) 1
                , translate (V3 (-19.8) 54.2 0) $ drill (10+0.5) 1
                , zRepetition 10.5 (Just 1) (const $ contour [V2 35 22.75, V2 24.38 62.9, V2 (-24.38) 62.9, V2 (-35) 22.75] RightSide False)
        ]
front2 = chain 1 [
                probeCorner
                , translate (V3 19.8 54.2 0) $ drill (10+0.5) 1
                , translate (V3 (-19.8) 54.2 0) $ drill (10+0.5) 1
                , zRepetition 10.5 (Just 1) (const $ contour [V2 35 22.75, V2 24.38 62.9, V2 (-24.38) 62.9, V2 (-35) 22.75] RightSide False)
        ]
front2 = chain 1 [
                probeCorner
                , translate (V3 19.8 54.2 0) $ drill (10+0.5) 1
                , translate (V3 (-19.8) 54.2 0) $ drill (10+0.5) 1
                , zRepetition 10.5 (Just 1) (const $ contour [V2 35 22.75, V2 24.38 62.9, V2 (-24.38) 62.9, V2 (-35) 22.75] RightSide False)
        ]