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What to do with old soap?

 
pollinator
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I used to make soap, and to that end and several kilos of old soap- its brittle and discoloured and has various random natural fragrances. What can I do with it? I can't sell it or give it away- rather strict rules about that here and I no longer have the paperwork.

Do you know any crafty or useful purposes? I can give a limited amount away as xmas gifts to family- but I can't give it away to charities or anything like that.
Can I compost it?
 
gardener
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you can grate it up, mix the shavings with hot water, and use this "liquid soap" to wash your clothes/dishes/floors/etc. (in my experience, depending on what your soap is it may require more or less effort to melt it completely)
or you can give this liquid to kids to make bubbles

give a bar to kids to soap up the bottom of their sleds
keep a bar outside for when you go out to your garden, you're supposed to claw a bar of soap with your nails so that you don't get dirt completely caked under your nails if you're like me and go work in the garden in the afternoon before dinner. I forget 98% of the time and generally have no nails anyway, but that's what I read

a few kg is a lot of soap, i know that doesn't help too much, but I love using homemade soap at home to clean EVERYTHING with (floors, cars, etc) and can't imagine getting rid of it!!
 
pollinator
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I save the ends of (bought) bar soap, and grate them up to make both soft soap (it can refill liquid handwash or shower gel containers) and liquid laundry soap.  If I don't have enough ends saved up by the time I need new homemade laundry soap, I'll grate up a full bar and not bother making liquid but mix it with washing soda to use as powder.  But the liquid is really useful (and it is just grated soap and washing soda dissolved into water) for cleaning--I use it as an all-purpose cleaner, and am trying to convince my family to use it for washing dishes--it makes no suds so it's a hard sell, but it still cleans just fine.
 
Charli Wilson
pollinator
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I made more soap.. incorporating some of the many kilos of old soap! The biscuit shapes are half grated new soap, half grated old soap of a useful colour/fragrance- moulded into new soaps!



I've also got a bar curing where I grated lots of old multicoloured soap and put it into a new ivory bar- it should look like confetti when I cut the bar.

I'm not sure making more soap necessarily counts.. but the new stuff is good for xmas and brrthday presents!
 
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Some possible uses and gift ideas:

1. The soap scraps can be soaked in water with a few spoonfuls of cheap vegetable oil to make 'White Oil' - used in the garden on fruit trees and roses to kill scale bugs, aphids, etc.
2. Place it in an old sock and use it to wash dishes
3. If it is nicely perfumed, place it in a plastic bag, pierce the bag with a few holes, and hang it in the wardrobe or with sheets/towels to make them smell nice. It may also keep moths away.
 
pollinator
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I use left over soap to help ease tapping and drilling of steel

I also use it to help make driving screws into wood easier

I use soap to slicken two pieces of wood if there is sliding motion (moving buildings)

I use soap to quiet a pipe rubbing on a joist and causing it to squeak
 
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If cooking over a wood fire, as in camping out and the pot is going to get soot on it, if you soap the pot first, then the black stuff comes right off.

You can put a piece of soap in a wash cloth or little cloth bag, moisten the cloth layer then put baking soda on the outside, and use it to scrub the bath tub ring out of a non enamel type tub.

You can get fine sand to stick directly on the outside of the soap and use that for scrubbing more durable surfaces.
 
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It can help get a metal zipper gliding smoothly - just rub it onto the teeth, a bit.

Writing 'for sale' on car windows (preferably your own, that you're actually trying to sell, lol)

 
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Soap pincushion - could be as simple as a bar of soap in a sock, or you could make as gifts by wrapping in a nice fabric (you can avoid sewing by making them like a Christmas cracker or bonbon (fold the fabric around the soap with long tails at each end which you tie with a bit of yarn or ribbon - even kids can do this). The soap helps your pins glide smoothly when pinning fabric.
 
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grate the soap fine and mix 5 parts with 20 parts baking soda and 1 part borax for laundry detergent.

Grated soap also makes a great travel soap as it's lighter than a bar and you don't have to worry about it not drying out.
 
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Charli Wilson wrote:I made more soap.. incorporating some of the many kilos of old soap! The biscuit shapes are half grated new soap, half grated old soap of a useful colour/fragrance- moulded into new soaps!



I've also got a bar curing where I grated lots of old multicoloured soap and put it into a new ivory bar- it should look like confetti when I cut the bar.

I'm not sure making more soap necessarily counts.. but the new stuff is good for xmas and brrthday presents!



These are beautiful soaps. You’re so creative. And they look absolutely delicious.
 
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You could make a few liquid soap makers.   A mason jar with a pump and a few acrylic beads in it.  Put the soap slivers and chunks in, add water, shake on occasion, and voila', liquid soap!  It makes the soap go farther, as you are not creating a sloppy soapy mess on the counter!  There used to be a commercially made "soap maker", but I haven't seen one in years.  A bar of soap in one of these simple contraptions lasts a LONG time!
 
pollinator
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My grandmother, who I only know from my mother's childhood stories, would save the slivers of bath soap in a mesh bag at the kitchen sink (in days before dishwashing detergent). The bag would get swished in the wash water to make it soapy.

My mother would save the bath soap slivers in a plastic bag with some added glycerin to keep them moist and after enough had accumulated, she would mash them together (with a strong dinner fork!) and form the mush into balls.
These balls would take a couple of weeks to "harden up" and then were used for handwashing. The balls seemed to last a long time, and didn't break apart like a bar would as it got smaller and thinner. Less surface area, smaller contact with the soap dish to dissolve it?
Come to think of it, the small balls may have been re-formed in the next batch (as a core?). I bet there's a bag of slivers waiting for me in her old house...

Personally, I just smash the slivers onto the side of the next bar of bath soap. The bars with deeply embossed logos help with making a soft surface to receive the sliver, and often I do this on the second day of using the new bar so it has softened up from being wet.

If I had (and I probably do, thanks Mom!) a bunch of random bits of old soap, I'd grate it up and make the hand washing balls. You could even add pumice for scrubbing dirty hands.
 
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