Sunday, May 10, 2015

Countersinking Elevator Skeleton Parts - 2 hours



I started to machine countersink E-702, E-705 and E-606PP. Using scrap pieces of oak, I predrilled holes then cleco'd the pieces to the oak. I think began to countersink with the cage on the drill. This allowed for most of the pieces to be done, however on E-702 the flanges prevent the cage from being used on the holes closest the flanges. I used my electric screwdriver/deburring bit and counter sunk those holes by hand, slowly but surely. 



 I ended up ruining E-606PP as I used the cage to countersink the holes at the very end of the piece. Since at the ends there is no material to support the width of the countersink cage, the bit cut too deep.



Upon inspection of all the other pieces, I noticed that a hole in the flange/tab of the right side E-704 was oblong. I put in an order to Van's for a new 606PP and a new 704 rib.

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