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Post by takeiteasy on Jun 14, 2012 13:35:25 GMT 10
It may have been somewhere on this site someone mentioned making epoxy putty white by mixing talcum powder with it. Has anyone tried this?
cheers, Bill
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Post by isambard on Jun 14, 2012 14:27:43 GMT 10
it must smell nice especially if you go for a coconut scented baby powder  |
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Post by junctionbox on Jun 14, 2012 14:28:46 GMT 10
...making epoxy putty white by mixing talcum powder with it. Has anyone tried this? cheers, Bill No not talcum powder? Some people may use it because it's easy to get but maybe it's the wrong stuff? The correct thickening agent is English Whiting. And no, that's not some type of edible fish!!! Talcum powder may contain some whiting but it wont be pure. Best to get the correct stuff? Whiting has been used for centuries to make all manner of putties and fillers and is also used in paint making. It's also used to polish glass and enamel, and to clean your teeth! en.wikipedia.org/wiki/Whitingwww.artmaterials.com.au/?cPath=49_2807PS: should this thread be in the Tech Stuff section? |
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Post by humpyboy on Jun 14, 2012 18:33:14 GMT 10
Years ago when I was young  I used uncented talc to thicken resin to use as a filler when I was buiding my Cabin Cruiser, it was the done thing when working with glass but not to sure how it would go with epoxy. |
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Post by junctionbox on Jun 14, 2012 18:56:59 GMT 10
If you only need a small amount of epoxy filler Selleys have an over the shelf white 2 pack product called Porcelian Repair. I've used it as a filler to repair retro laminex tables and damaged marble washstands, etc. But it wouldn't be economically viable for large jobs.
Talc, chalk, or whiting will probably not produce a very solid white when mixed with epoxy. At best it will be opaque or translucent white. To achieve a solid white would require adding so much talc that it would effect the quality of the bond. It's possible to use paint tint to add colour to epoxy. I've done that many times. The problem is finding a friendly paint store that will part with their tint?
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Post by takeiteasy on Jun 14, 2012 19:16:43 GMT 10
Thanks everyone - I am nowhere near a shop that sells English Whiting. Time to experiment I think. The repair will have a thin layer of glass over it, then a bit of paint. I only want to whiten the putty so it doesn't show through.
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Post by humpyboy on Jun 14, 2012 20:29:49 GMT 10
Just as an experiment, why not mix in a little white paint?
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biggusmickus
Junior Member
Been giving the Good News to "Dead Beats" and "No Goods" since '33
Posts: 84
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Post by biggusmickus on Jun 14, 2012 21:19:54 GMT 10
You can buy white epoxy off the shelf at bunnings - its one of the aeraldite in the dual syringes for porceline.
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Post by takeiteasy on Jun 14, 2012 23:19:06 GMT 10
Noted BMickus, I am not all that close to a bunnings.... perhaps on the weekend.
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Post by drylander on Jun 15, 2012 0:01:33 GMT 10
It worked for me when I was into building small boats and yep works with epoxy as well as fibreglass resin
Pete
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Post by takeiteasy on Jun 25, 2012 9:54:04 GMT 10
Thanks Pete.
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I used uncented talc to thicken resin to use as a filler when I was buiding my Cabin Cruiser, it was the done thing when working with glass but not to sure how it would go with epoxy.