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| RussellT:
Hi All I have been repairing a Goodell Pratt 5 1/2 B hand drill that belonged to my father and to his father. I’m posting this project log now the project is finished, I didn’t do it earlier mainly because I wasn’t sure I would finish. It is however a true Madmodder project because the effort was completely out of proportion to the end result. :loco: :nrocks: Russell |
| RussellT:
The main handle on the drill had clearly been repaired before and the ferrule had been redrilled and had a "pin" retaining the handle. The pin was six strands of copper wire with nasty sharp ends. I took the pin out and removed the handle. I discovered a piece of wood had been let into the handle and the extra hole through the ferrule had been drilled through the threaded iron of the drill. Unfortunately it had missed. The metal between the original and the new hole had also cracked. After some thought I decided that this had to be fixed. My objective was to make this a usable tool and this would eventually have broken. I cut the old thread off and drilled the frame with an 8mm hole. I found a bolt with the same thread as the original and turned that down to 8mm and loctited the two together. |
| RussellT:
The next problem I tackled was that the crank knob wouldn't rotate. I thought this was probably due to rust on the shaft. I drilled off the riveted over end and removed the knob. I hit a big snag here. I thought the shaft was tight in the knob because it was rusty. It turned out that the shaft was too short because of previous attempts to tighten up the riveting. That had also swollen the end of the shaft inside the knob, so the knob split as I tapped out the shaft. I glued it back together. I used superglue because the low viscosity meant I could get it in without having to remove the small brass ferrule from the knob. I turned a new shaft and re-riveted the knob in place. |
| RussellT:
The main handle had already been repaired once but the new bit of wood disintegrated as I took it to pieces. The first task was to clean up the hole in the handle and make it round which was easy once I'd worked out how to hold it in the lathe. The next step was to make a wooden threaded insert for the handle. I tried making a tap from a bolt with the right thread but couldn't cut a thread in the end grain. I decided to use a dremel type tool to cut the thread. I made a special cutter for the tool, and a special tool holder for the lathe. The pictures show the bits and how they go together. |
| RussellT:
I repaired the ferrule by silver soldering a brass wood screw in the hole and cutting and filing off the extra bits and refitted the handle. I made a missing part from the chuck and a new side handle, using dimensions for both from some helpful people at UKWorkshop.co.uk. |
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