Friday, August 26, 2011

Recut Top Right Door Bracket, Tapped Other Brackets, Widened Door Holes, Countersunk Lower Left Back Door Hole

Back to work on the back door.

I cut a replacement bracket for the one that I snapped the end of my #4-40 tap bit in.



I used the original bracket as a template for the mounting holes used to attach the bracket to the frame. I drilled through the holes and through a 1/2" scrap piece of plywood.



I used the block of wood as a guide for where to drill the replacement bracket.



After drilling the new bracket, I countersunk the holes.



Unfortunately, I was not immediately able to screw the bracket onto the frame. This is the ill-fated bracket that I also snapped off the drill bit on the upper hole the other day. The digging with the pliers to pull the drill bit out left enough slop that I wasn't getting a tight fit when I tried screwing down the replacement bracket.



I decided to use wood glue to glue a toothpick in the hole, and then I covered the mess I made with the needle nose pliers using JB Weld. An hour or two later, I smoothed this over little more, and I will sand it smooth once it's all dry.



In the meantime, I got to work on widening the holes on the door. Previously, I had drilled these holes with a #43 drill bit, so that when the drill bit drilled through the door and the bracket behind it, the hole in the bracket would be the rights size for tapping for a #4-40 screw. I used a 0.116" drill bit to widen the hole to be large enough to allow a #4 screw to pass through.



I also bought a replacement #4-40 tap bit (two of them actually). Rather than attempt to tap the brackets while they were still in the frame, I removed them, put them in a vise, and tapped them there instead. Much better, no broken bits today.



I reinstalled the three brackets, and screwed the door in place. The upper-right bracket isn't installed yet, until the JB Weld and wood glue dry and have been sanded smooth.

I was able to countersink one of the four holes on the door, the lower-left hole. I need at least two diagonally opposing screws to keep the door on, so this was the only hole I was able to countersink tonight.




Hopefully I can install the upper-right bracket tomorrow, drill and tap it, finish the countersinking on the door, and be done with the door installation. Then all that's left is installing the rear power coupler.

No comments: