If they have turned more reddish with age | |||||
Re: Thank you, all of you! -- nishedha | Post Reply | Edit | Forum | Where am I? |
If you have some household ammonia, wet a cotton swab with a tiny bit and rub a place that doesn't show. If the swab turns mustard yellow, that is also a good sign for phenolic resin.
I have been using "Bakelite" interchangeably with "phenolic resin" since many more people know this trade name and associate it with old plastic.
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