I was out hitting up some flea markets with Chris when I came across a used Dewalt 7″ grinder for a great price. I plugged it in and ran it before purchasing in the store. I didn’t hear any odd noises or feel anything abnormal while running the grinder. Satisfied that nothing seemed wrong, I purchased it and brought it home.
Overall, the grinder was it good condition. The first issue is that the outer cover of the cord had broken and been wrapped in tape. This isn’t a major issue but it could cause problems in the long term. The other issue is that the end of the cord had been cut off and replaced with another plug. The “repair” just looks pore and I really don’t trust it not to short out at some point.
I cut off the tape to expose the break in the cord sheath. The wires underneath were still in good condition and didn’t require any work.
I thought about how to fix the break in the cord. I could have cut the cord before the break and opened the grinder to reattach the cord. As the wires were still good I decided to use some heat shrink tubing to repair the sheath. Normally, I couldn’t repair the sheath in this fashion because the heat shrink tubing wouldn’t fit over the plug. I planned to cut the plug off anyways, so this wasn’t an issue. Below is the piece of heat shrink tubing I used.
I slipped the heat shrink tubing up into position and used a lighter to shrink the tubing into place.
Next, I put a new plug on the end of the cord. I’ve covered putting a plug on a cord before so I’ll just show the final result. I finally bulk ordered some replacement plugs off of Amazon instead of buying them one at a time from the local store.
The grinder looked like it’d never been cleaned before. All of my tools aren’t pristine, but I don’t like tools that get you dirty just by picking them up. So, I used some Simple Green and an old tooth brush to clean it up some.
After posting the above, I received a comment from someone named Jack who pointed out that he didn’t like my repair of the break in the cord sheath. He didn’t say why but it started me thinking about it. I decided that the use of heat shrink tubing probably wouldn’t last very long before cracking or breaking. It also wouldn’t do a adequate job of insulating and handling the loads that is the purpose of the sheath. Since I try to make my repairs to last I decided to fix this issue. I opened the grinder, cut the cord after the break in the sheath, and reattached the cord to the grinder. I didn’t get pics of the process but do have a pic of the repaired cord.