Author Topic: Ivory Thermoplastic Peroxide  (Read 1663 times)

Offline WEBellSystemChristian

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Ivory Thermoplastic Peroxide
« on: January 18, 2016, 03:50:57 PM »
Has anyone ever used Peroxide cream on Ivory Thermoplastic, such as an Ivory 302? I have an Ivory 354 that has absolutely no cracks anywhere, but has stress indentations in the front around the dial. These indentations wouldn't be very noticeable if they weren't highlighted by a dark tint.

I was thinking about using Peroxide/UV treatment to try getting rid of the dark areas. I've used this method many, many times on Tenite and ABS, but is it safe on Thermoplastic?
Christian Petterson

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Offline Doug Rose

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Re: Ivory Thermoplastic Peroxide
« Reply #1 on: January 18, 2016, 04:04:19 PM »
Christian....I have soaked a few Ivory thermoplastics in a 50% bleach/water solution with fantastic results.....Doug
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unbeldi

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Re: Ivory Thermoplastic Peroxide
« Reply #2 on: January 18, 2016, 06:01:22 PM »
Here is the result of using diluted Clorox bleach, diluted to ca. 30-40%, on a 354:

http://www.classicrotaryphones.com/forum/index.php?topic=11814.msg126729#msg126729

Nothing is cheaper than Clorox, 121 oz can be had for less than $4 on sale, IIRC.

unbeldi

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Re: Ivory Thermoplastic Peroxide
« Reply #3 on: January 18, 2016, 06:03:17 PM »

I was thinking about using Peroxide/UV treatment to try getting rid of the dark areas. I've used this method many, many times on Tenite and ABS, but is it safe on Thermoplastic?

Both Tenite and ABS are thermoplastics too.

Offline EricofonNL

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Re: Ivory Thermoplastic Peroxide
« Reply #4 on: April 16, 2016, 01:43:37 PM »
Yesterday I also restored an Ericofon with peroxide for the first time. And I must say with pretty good results.
I was able to start this experiment because of the posts on this forum.

You can see my experiment on my blog : http://www.ericofon.nl/collection/dark-start/

This will save me a lot of time and will improve some phones dramatically :-)

Thanks
With kind regards,

Paul

http://www.ericofon.nl

Offline Matilo Telephones

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Re: Ivory Thermoplastic Peroxide
« Reply #5 on: April 19, 2016, 05:37:56 PM »
Interesting article you wrote there, Paul.

I have received a good candidate for peroxide treatment today. A Wedgewood blue Ericofon, that has yellowed a bit. See picture.
Groeten,

Arwin

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Offline EricofonNL

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Re: Ivory Thermoplastic Peroxide
« Reply #6 on: April 19, 2016, 06:41:00 PM »
I tried grey as well and that was also a success.
Blue should be no problem at all. Good luck!

Paul
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Paul

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Offline EricofonNL

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Re: Ivory Thermoplastic Peroxide
« Reply #7 on: May 15, 2016, 02:24:28 AM »
Any news on this blue Ericofon Arwin?

I have done some more experiments with other colors. With pink you need to be extremely careful since it bleaches out very quickly. Do the cleansing in multiple steps of 1-2 hours to be sure you do not overbleach the shell. Last week I messed up a pink phone.

But still, the method remains a good alternative for the sanding process.

With kind regards,

Paul

http://www.ericofon.nl

unbeldi

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Re: Ivory Thermoplastic Peroxide
« Reply #8 on: May 15, 2016, 09:38:55 AM »
Any news on this blue Ericofon Arwin?

I have done some more experiments with other colors. With pink you need to be extremely careful since it bleaches out very quickly. Do the cleansing in multiple steps of 1-2 hours to be sure you do not overbleach the shell. Last week I messed up a pink phone.

But still, the method remains a good alternative for the sanding process.

The same is true for Western Electric's pink plastics.
But you should be able to repair the fading by sanding.  On a Princess, it was not hard to get the color back.