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Power Tool Cord Strain Relief DIY

WallynSC

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Feb 6, 2011
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152
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South Carolina
I picked up a Hilti TRD 3000, 3/8 corded drill at a pawn shop. Current cord is crumbling, drill seems to run good. Hilti response to my email are no parts or manuals available. Have any of you modified or made a strain relief for any power tools. Show me how. I'm calling it a strain relief, may be wrong name, but where the electrical cord enters the tool. Any tool, not specific to drills.
 
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Caman

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Feb 1, 2015
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MN
Usually strain reliefs are molded on to the cord and it is an all-in-one thing you must buy.

Take it apart and post some pictures. Also give the model number, tyou may find a website that has parts the manufacturer no longer stocks
 

beamrider

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Jan 21, 2013
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Columbus OH (displaced from Wheeling)
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Spring door stop. Cut the larger end to whatever diameter will fit inside the case. This requires either removing the wires from the drill, or cutting the plug off and installing a new one, tho. Works well.
 

rlitman

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Oct 18, 2010
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Long Island
Usually strain reliefs are molded on to the cord and it is an all-in-one thing you must buy.

Not at all. On power tools more than a few years old, the strain relief is usually separate.

I've had lots of vintage Porter Cable tools where the power cord jacket started crumbling. You can make a new cord using SO or SJ wire.
300V wire has a thinner jacket. 600V wire is thicker.
If you don't have a strain relief, just use 600V wire, and it'll be strong enough. If you do have one, you may need to use the thinner 300V wire to fit in it.
 

SantaAna12

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Mar 1, 2012
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Spring door stop. Cut the larger end to whatever diameter will fit inside the case. This requires either removing the wires from the drill, or cutting the plug off and installing a new one, tho. Works well.

That flare might just fit ur tool. Would provide retention too.

Cool idea.
 

madcrisis

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Dec 3, 2013
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216
I cannot for the life of me remember what its called but someone makes a "putty" that you mold around cords to make strain reliefs. Hopefully this sparks someones memory here if no I'll keep looking. You can use it for making grips for things too.
 
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deanknow

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Sep 4, 2011
Messages
7
EBAY has these for about $3.50 plus $1.00 shipping. Search for
"Strain Relief Cord Power Tools" Just the boot is all that's needed. It fits over a new round cord of your choice.
 

neophyte

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Apr 23, 2012
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Pennsylvannia
Some of the Hilti tools are supposedly manufactured by other companies. If the tool was made in Liechtenstein than it was probably made by Hilti. Some of the older Hilti drills I've seen appear to have been rebranded drills from Metabo. Bosch supposedly manufactured some tools for Hilti in Germany. One old Hilti branded screw gun I saw looked like it might have been manufactured by Porter Cable before Black and Decker took over.

Sorry, this was a bit of topic but I just figured I'd mention it if other parts wind up being a problem.
 

rick carpenter

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Jan 20, 2011
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Huntsville, East Texas
Usually strain reliefs are molded on to the cord and it is an all-in-one thing you must buy.

Take it apart and post some pictures. Also give the model number, tyou may find a website that has parts the manufacturer no longer stocks

I've seen some rubber strain relief 'collars' that are separate from the cord that are held in place by the opening in the handle that grips both the collar and the cord inside it. You might look around on ereplacementparts.com and see if you can adapt either a collar or a cordset w/molded collar from another model or mfr.

The electric tape idea may work well but I would suggest it be the thick self-bonding electric tape. Also consider an underwriter's knot if there's room.
 

Silver Heels

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Oct 19, 2011
Messages
126
my hardware store has a drawer full of different strain reliefs, in the nut/bolt section by the rubber stoppers. If not, any tool repair place will have em
 
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