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Ideas for a counter balance Answered


I am looking at ways to replace the weight of the batteries in a cordless drill (the batteries leaked, and they are not sold to my knowledge anywhere in THIS country); after wiring in a power supply (making it corded).  

Any suggestions?   I have thought of a few but nothing seems overly viable at the moment.

28 Replies

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jeff-o (author)2011-11-07

How about a bunch of rocks?

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Goodhart (author)jeff-o2011-11-07

I'd have to take a trip out into the countryside to pick up some rocks. I have to get over this blue funk I'm in again and get to it....with SOMETHING....I have an idea what I could use but I need to rig a double boiler for heating the plastic "stuff" to make a crude container for the weights I put in.

If I'd been young again, I could have gone trick or treating in a Charlie Brown ghost sheet with lots of holes in it and gotten a bag of rocks..... :-)

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n1cod3mus (author)2011-11-05

i think lead will be your best bet

to make a mold all you have to do is shape some clay or plasticine then make a mold of it using plaster, do it as a 2 part mold.

then melt your lead and pour it in the mold, i would make a battery size mold then you can just add as many as you need in the same place as the battery. and with the 2 part mold you can get the lead out easy.

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Goodhart (author)n1cod3mus2011-11-05

Yes, as I have a lump of lead already that is around the proper weight, this is kind of what I was thinking of.

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Kiteman (author)2011-10-25

Stacks of metal washers, wrapped in paper (like rolls of quarters)?

Cement, moulded into the desired shape?

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Goodhart (author)Kiteman2011-10-26

Hmm, the nice thing about the washers is I could regulate the weight fairly easily, and substitute more or less of the plastic "stuff" I mentioned to Ninzerbean, since I have that on hand already. Thank you.

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aRKayy (author)Goodhart2011-11-02

If the plastic "stuff" you're referring to isn't Sugru, I might consider that stuff. Its pretty much the coolest DIY stuff out there. In fact one of their examples is a drill handle. http://www.thinkgeek.com/gadgets/tools/e976/

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Goodhart (author)aRKayy2011-11-02

Well, I would need quite a quantity of it, and so that is not so cost effictive. No, the "stuff" I refer to is little granules that get heated on a double boiler, and at near the boiling point of water, it melts. I don't expect I will be using the drill in weather that is hotter than that, so I have no fear of it softening again after application :-)

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Goodhart (author)Ninzerbean2011-10-26

Hmm, well I'd have to seal it somehow for it to remain wet, but that would work...I have to plastic molding "stuff" that could be used as a container (melts in a double boiler and you pour it into a mold). thanks

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rimar2000 (author)Goodhart2011-10-26

Dry sand weighs more than wet sand! A little more.

I would use a polyethylene bag, filled with concrete.

I would weigh the dry concrete, before mixing with water, to equate it with the battery. Keep in mind that some water is incorporated into the concrete permanently, I don't know the amount.

Lead can be melted on the stove in the kitchen. You can make a plaster cast of the cavity very easily. Control the amount of lead you will put, or the tool will be too heavy.

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Ninzerbean (author)rimar20002011-10-26

Verdad, mojodo arena es mas pesado que arena seca? Increible! (yo estoy aprendiendo el Espanol)

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Goodhart (author)Ninzerbean2011-10-26
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Goodhart (author)Ninzerbean2011-10-28

ok, I wasn't sure if you noticed you spelled it with an O instead of an A :-) when I went to "look it up" I couldn't find a reference to mojodo that made sense in the sentence :-)

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rimar2000 (author)Goodhart2011-10-27

Mojado = wet, damp, soaked, moist, soaking, sodden, sopping, watery, sloppy, dampish, slobbery
Húmedo = wet, humid, damp, moist, dank, watery, dabby

I suppose damp or soak is more watery than wet, is it so?

Damp sand it lighter than dry sand because water occupies a volume.

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Goodhart (author)rimar20002011-10-27

yes, she wrote mojodo however, and I was unable to find a reference for that that made sense :-)

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Goodhart (author)rimar20002011-10-26

Yes, I would cut out the proper weight in lead (if I use that), prior to melting it, but I would need to purchase cement.

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gmoon (author)2011-10-27

Split-shot weights (from fishing supply store) in a baggie? Or any "sinker" weights...

Maybe just lead shot? (though I've never used/bought any).

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Goodhart (author)gmoon2011-10-27

That would certainly be more adjustable and I could weight it out ahead of time, and wouldn't even need to compensate for the relatively light weight plastic mold I'd use as a case for it. Thanks.

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gmoon (author)Goodhart2011-10-27

Sure. I don't know if they'd be heavy enough, but plain old BBs might work, too. And easy enough to find at your basic Walmart or D**k's (self-censoring so the filters don't get me). Or lead pellets for a BB gun.

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Goodhart (author)gmoon2011-10-28

Well, considering what is in a ni/cd battery, I would think they would be (especially lead "shot") but that again requires a purchase and would have to wait. I like the idea, but was hoping to finish up this project by the end of this weekend (I am still struggling with why inputting 18 vdc to the 18 v motor doesn't seem to do the trick (lack of torque), unless it isn't getting enough amperage....delays, delays... LOL

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iceng (author)2011-10-25
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Goodhart (author)iceng2011-10-26

Without the "weight" at the bottom from the batteries, the drill is very hard to "handle" as it is very top heavy.

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iceng (author)Goodhart2011-10-26

Fascinating, thank you for explaining it for me.

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Goodhart (author)iceng2011-10-26
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Flintlock (author)2011-10-25

Fill the area where the batteries used to be with fishing weights. (small steel balls)

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Goodhart (author)Flintlock2011-10-26

I will have to check cost, thank you for the idea. I have a lump of lead already but it may be difficult to fashion into the proper shape an weight, but I shall see.

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