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Molds on real leather seats


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#1 OFFLINE   CMCnewbie

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Posted 25 February 2018 - 09:30 PM

This problem can only happen to some CMC diecasts with real leather seats.
Any idea how to prevent it from happening to our priced possessions?
These molds grow despite airtight display box.
Sprinkle some silica gels inside our car compartments?
Attached File  Mold.jpg   77.44K   4 downloads

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#2 OFFLINE   tmnt_ppn

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Posted 26 February 2018 - 05:29 AM

I've never seen this on a model car before, but it does happen on a wristwatch with leather strap or leather bag/purse. AFAIK, they do have a special wax for leather. Maybe we need to apply those?
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#3 OFFLINE   Uzair

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Posted 26 February 2018 - 05:30 PM

I am pretty sure that high humidity is the main reason for mold growth. Airtight displays can also work against model preservation since lack of circulating fresh air means mold can easily grow unless you have really low humidity inside the box.

The best thing I would therefore suggest is to ensure you use lots of silica gel dessicant bags inside your airtight cases.

You can also play around with the values in this tool http://www.dpcalc.org/. Your room temperature and humidity are fixed, so see what dew point you get, and what the Mold Risk value is for your conditions. My display room has quite low humidity so mold is not a risk, but I still use some silica gel especially in summer when humidity rises above 45%
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#4 OFFLINE   jazzy426

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Posted 26 February 2018 - 07:57 PM

 CMCnewbie, on 25 February 2018 - 09:30 PM, said:

This problem can only happen to some CMC diecasts with real leather seats.
Any idea how to prevent it from happening to our priced possessions?
These molds grow despite airtight display box.
Sprinkle some silica gels inside our car compartments?

i presume you live in Indonesia? If so that would probably explains the molds. I lived in Malaysia for 1/3 of my life and the high humidity in tropical area can pretty much destroys anything. We had molds grow on pretty much anything from the 80s video casette tapes to any kind of leather surface etc. The molds will somewhat creep into the airtight box especially if the room isn't temperature controlled unless you can afford to leave the airconditioning running 24/7 i think this is just inevitable. Perhaps clean off the existing molds first then apply leather wax on them like what Alvin suggested and see how that goes? I think that is how they keep their leather bags and seats spotless over there with wax and/or conditioner?

#5 OFFLINE   CMCnewbie

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Posted 28 February 2018 - 08:36 AM

Thank you all for your feedbacks.
Yes, I live in a tropical country where humidity usual readings is around 87%, as such it is rather tough on diecasts. I am also learning on the dew point calculator. Besides silica gel, did any of you ever use Calcium Chloride like those sold as Humidity Absorber to dry out the air?
Photo of my GTO's exhaust pipe has started to corrode even at a CMC distributor. The Berlinetta with the mold actually belongs to the CMC distributor.

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#6 OFFLINE   ironsim

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Posted 28 February 2018 - 08:42 AM

Honestly if it was that high in humidity and would cause this to my models I would not even collect :/

#7 OFFLINE   Craig

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Posted 28 February 2018 - 12:13 PM

Same here. Sadly it must be like watching your money burn before your very eyes.

F**k you Photobucket.



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#8 ONLINE   vulpex

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Posted 28 February 2018 - 01:15 PM

 CMCnewbie, on 25 February 2018 - 09:30 PM, said:

This problem can only happen to some CMC diecasts with real leather seats.
Any idea how to prevent it from happening to our priced possessions?
These molds grow despite airtight display box.
Sprinkle some silica gels inside our car compartments?
Welcome to the club, CMCnewbie!! :yahoo:
But I have good news for you!!!

Last year I had exactly the same problem:
I've been really happy to get this stunning 312P Berlinetta :omg: in "mint condition" from an ebay auction.
Besides this little problem with the seats the model was just perfect and so I kept it.

First I was thinking that I would have to live with this flaw, but then I decided to tackle the problem:
I check my professional toolbox and chose these 2 very sophisticated tools :nice:
Posted Image
The mold seemed be to some kind of wax or fat and at the end it took me roughly 20 minutes to carefully clean the seats by use of Q-tips. For smaller pieces of that fat remaining in grooves or edges the toothpick was very helpful.
And that's all. Now my seats look like new again.  :rolleyes:  :rolleyes:  :rolleyes:

Just try... :occasion14:

Edited by vulpex, 28 February 2018 - 01:15 PM.


#9 OFFLINE   jazzy426

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Posted 28 February 2018 - 08:05 PM

Cotton buds and toothpicks with combination of wet wipes are my toolkits when comes to cleaning models especially the hard to reach interior space LOL.

Frankly molds might not be such a big issue as they can still be cleaned I think the biggest concern is the paint rashes accelerated by the constant high humidity in the air.  i've came across a few Kyoshos and Autoarts that have spent their life in south east asia and there are blisters just about everywhere. And i have those exact models in the same colour and none of them have exhibit rashes.. yet. I think this is largely thanks to the constant dry weather and low humidity we have in western Australia. And who knows perhaps the silica gels i keep in the shelves next to the models all these years might have also help a bit.




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