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Reusing Silica Gel Packets

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Pillar of the Community

United States
1192 Posts
 Posted 09/20/2016  8:19 pm Show Profile   Bookmark this topic Add LibertyEagle20 to your friends list Get a Link to this Message Number of Subscribers
Hi,

Last year I bought a pack of 100 Silica Gel Packets to put in with my coins. I have heard I can "recharge" them by putting them in the oven. Another 100 only costs $12 but if I can save a few bucks and save what I have, I will. I am a little nervous about putting these in the oven like I've read about. What temp and how long? Won't the paper the packet is made out of catch on fire?

Thanks
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GR58's Avatar
United States
11951 Posts
 Posted 09/20/2016  8:28 pm  Show Profile   Bookmark this reply Add GR58 to your friends list Get a Link to this Reply
I have also heard you can dry them out in the oven.
But I have never done it.

I hope someone with experience will post.

If I remember right ... paper won't burn below 451 F.
Seems like temp for drying packets was 200 F.
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John1's Avatar
United States
56855 Posts
 Posted 09/20/2016  8:31 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
I have not heard of drying the paper packet ones before. I have one that's in a glass container that changes color when it needs to be dried out and used again.
John1
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Earle42's Avatar
United States
10038 Posts
 Posted 09/20/2016  8:38 pm  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply
A quick google search will bring up many links - here is just one:
http://qqjky.qjhbf.servertrust.com/...ca%20Gel.pdf
How much squash could a Sasquatch squash if a Sasquatch would squash squash?
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Andrew99's Avatar
United States
1533 Posts
 Posted 09/20/2016  9:35 pm  Show Profile   Bookmark this reply Add Andrew99 to your friends list Get a Link to this Reply
You can dry them at 250F - 300F which is above the boiling point of even strongly physisorbed water, but below the ignition temp of paper 450F. 2 hours ought to do it.
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jbuck's Avatar
United States
188952 Posts
 Posted 09/21/2016  11:02 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply
I agree, heat them up! Twelve bucks not spent is twelve bucks saved.
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CelticKnot's Avatar
United States
12841 Posts
 Posted 09/21/2016  12:16 pm  Show Profile   Bookmark this reply Add CelticKnot to your friends list Get a Link to this Reply
I keep meaning to do this for my basket of silica gel packs that I keep in my safe. Thanks for the reminder!
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KenKat's Avatar
United States
4085 Posts
 Posted 09/21/2016  12:55 pm  Show Profile   Bookmark this reply Add KenKat to your friends list Get a Link to this Reply
I do this - 200 degrees for 4 hours I believe. I follow the instructions on the packs (Stack-On brand). I recharge them 3 times before I throw them away and get new ones.
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United States
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 Posted 09/21/2016  4:56 pm  Show Profile   Bookmark this reply Add LibertyEagle20 to your friends list Get a Link to this Reply
Does this need to be in a regular oven or will a toaster oven be ok? Will this smell up the house or leave any dangerous residue/chemicals in the oven?

jbuck - that $12 can be put toward another coin :)
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jbuck's Avatar
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 Posted 09/21/2016  4:59 pm  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply

Quote:
jbuck - that $12 can be put toward another coin :)
Exactly!
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KenKat's Avatar
United States
4085 Posts
 Posted 09/21/2016  8:13 pm  Show Profile   Bookmark this reply Add KenKat to your friends list Get a Link to this Reply
Does not smell up the house or leave any residue - at least not the brand I use. I put them on an old cookie sheet and bake them. I would think a toaster oven would work fine as long as you keep the heat on the low end. I'd try one or two to start and see how it goes as I have heard that people have had them break open. I've never had a problem though.
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jbuck's Avatar
United States
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AgCoinAu's Avatar
Canada
3049 Posts
 Posted 09/22/2016  11:36 am  Show Profile   Bookmark this reply Add AgCoinAu to your friends list Get a Link to this Reply
I put them in the oven at 250 for 2 hrs... they're in paper packs already ... after that I toss the packs into a mason jar for approx 4 hrs and seal the jar... then it goes back to coins...

I would NEVER use a microwave.. while some suggest it can be done you're trying to draw the water out of the silica... but once a microwave doesn't have water molecules to "energize" it can damage the microwave...
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 Posted 09/24/2016  10:51 am  Show Profile   Bookmark this reply Add just carl to your friends list Get a Link to this Reply
Remember that a gas oven uses gas and in some areas, the price of the gas may far out do the price of new gel packs.
And if you do this in the Summer when your A/C is running, now the added heat in your house from the oven makes your A/C run more.
Edited by just carl
09/24/2016 10:52 am
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Neo13x's Avatar
United States
604 Posts
 Posted 09/26/2016  10:30 am  Show Profile   Bookmark this reply Add Neo13x to your friends list Get a Link to this Reply
I recharge my silica (with & without paper packs) in the oven and or toaster oven. The only problem for the paper packs is that sometimes the seam will separate from the heat but since I find them for free its not a big deal. When I put them in the toaster oven I will cover them loosely with aluminum foil as to keep the direct heat off of them. I fear that since the heat coil is closer in a toaster oven it may cause problems. I can't say if it saves me any money or cost me more but what I do know is it saves me the time from having to buy new ones.
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Earle42's Avatar
United States
10038 Posts
 Posted 09/26/2016  12:06 pm  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply
I got mine all free anyway. My son had a job in a furniture store. Every piece of furniture thy have shipped to them has a large pack in the box with the furniture. I just asked him to save them for me. He hung a large plastic bag up in the wall and asked his co-workers to save them. I got a large bag full in a matter of months.

Go to a local furniture store and ask. Nowadays with a better attitude towards keeping things out of a landfill, people are more willing to do this kind of thing. They just throw them away.

How much squash could a Sasquatch squash if a Sasquatch would squash squash?
Download and read: Grading the graders
Costly TPG ineptitude and No FG Kennedy halves
https://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2
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