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SAM'S WEB SITE
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Date: 8-22-2010
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Number of Hours: 4.00
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Manual Reference:
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Brief Description: Deburring and more deburring
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The last several days I have been preparing to build the right tank again, but before I can do that I need to get the left wing skeleton to the point where I can take it out of the frame and place the right wink skeleton back in the frame. I messed up building the frame and can't work on both wings at the same time, too close together. So, I need to get all the holes deburred and dimpled, and there are a lot of holes in the wing skeleton and skin.
I found the battery powered electric drill getting real heavy after deburring a couple of hundred holes, found the air drill too difficult to hold at a steady speed, and found my fingers getting sore if I just spun the countersink bit with my finger and thumb, although that does a good job. I then got a brainstorm; back in my other life when engineering drawings were done on paper with pen and ink, before drawing on a computer (CAD) became the norm, I used a device called an electric eraser, which spun cylindrical rubber erasers that I remembered being about 1/4 inch in diameter. I still had one that had not been used in over 15 years or so, so I dug it out, and the chuck just fit the 1/4" shank on the countersink bit. It worked like a charm, light enought to use for a long while without getting too heavy, and a switch that operated by just pressing with a finger. After a while, the chuck began slipping on the smooth shank, so I wrapped a little duct tape on the shank and that problem went away.
Got a lot of holes deburred, still have a couple of hundred to go, then for the dimpling.
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The old electric eraser.
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Closeup of the friction chuck and deburring tool (countersink).
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The eraser serving as a deburring tool
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