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How to secure a mineral inside a plastic box?
  
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cascaillou




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PostPosted: May 24, 2021 12:11    Post subject: How to secure a mineral inside a plastic box?  

I'd like to display some specimens inside transparent plastic boxes, and I would glue each specimen inside its box (so that the specimen won't move even if the box is shaked around or turned upside down).

My criterias for the adhesive material are as follows:

-colorless (and doesn't turn yellowish with time)
-water-free and non acidic
-easily removable with acetone
-providing a strong hold (for specimens which are 6 to 8cm in size)

What type(s) of glue would match those requirements?
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bob kerr




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PostPosted: May 24, 2021 12:52    Post subject: Re: How to secure a mineral inside a plastic box?  

Adam Wright of the crocoite Adelaide mine has been attaching delicate specimens for years to the inside of clear acrylic boxes - these boxes are not always airtight but could probably be made so. he uses one adhesive that is soluble by acetone and also hot glue which is soluble in alcohol.

maybe best to contact him:
theadelaidemine dot com

bob
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bob kerr




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PostPosted: May 24, 2021 13:27    Post subject: Re: How to secure a mineral inside a plastic box?  

i found some closeup photos of Adam's mounted specimens. he also uses hot glue which can be removed via warm alcohol but may yellow with age. He mounts these mainly for protection and it's up to the new owner to decide if he wants to remove the specimen for final display - although his displays are fine with me and not worth the risk to handle them further.

bob



DSCN3879.JPG
 Mineral: crocoite
 Locality:
Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia
 Description:
note glue which is soluble in acetone
 Viewed:  5371 Time(s)

DSCN3879.JPG



DSCN3876.JPG
 Mineral: crocoite
 Locality:
Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia
 Description:
 Viewed:  5349 Time(s)

DSCN3876.JPG



DSCN3875.JPG
 Mineral: crocoite
 Locality:
Adelaide Mine, Dundas mineral field, Zeehan District, West Coast Council, Tasmania, Australia
 Description:
 Viewed:  5354 Time(s)

DSCN3875.JPG


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cascaillou




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PostPosted: May 24, 2021 16:54    Post subject: Re: How to secure a mineral inside a plastic box?  

I'll send an email (although I'd go with a little less glue)
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bob kerr




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PostPosted: May 24, 2021 17:05    Post subject: Re: How to secure a mineral inside a plastic box?  

cascaillou wrote:
I'll send an email (although I'd go with a little less glue)


yah - but don't forget that Adam is shipping these from Tasmania to Tucson. i guess i would over-do the glue on these wonderful and expensive specimens also.

bob
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vicen




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PostPosted: May 25, 2021 03:32    Post subject: Re: How to secure a mineral inside a plastic box?  

I will recommend you Paraloid B72. Paraloid B-72 is an Acryloid (copolymer of ethyl methacrylate and methyl acrylate). The secret for it's strength is to leave it to dry for 24 hours. It has all the criteria that you are looking for
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Pete Richards
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PostPosted: Dec 26, 2022 10:34    Post subject: Re: How to secure a mineral inside a plastic box?  

Does anyone have experience with fugitive glue ("credit card glue") for mounting mineral specimens? From what I read, this is a special kind of hot glue. When used with credit cards, you can separate the credit card from the paper it comes on and easily roll or pull the adhesive off of either surface. I wonder how it might work, for example, for mounting thumbnail specimens in their boxes. The need is for adequate grip on the specimen without glue penetration into the matrix.
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James Catmur
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PostPosted: Dec 27, 2022 12:27    Post subject: Re: How to secure a mineral inside a plastic box?  

I have never tried it, but the idea is interesting. I see there are also 'glue dot' versions available.

Pete Richards wrote:
Does anyone have experience with fugitive glue ("credit card glue") for mounting mineral specimens? From what I read, this is a special kind of hot glue. When used with credit cards, you can separate the credit card from the paper it comes on and easily roll or pull the adhesive off of either surface. I wonder how it might work, for example, for mounting thumbnail specimens in their boxes. The need is for adequate grip on the specimen without glue penetration into the matrix.
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Roger Warin




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PostPosted: Dec 27, 2022 13:55    Post subject: Re: How to secure a mineral inside a plastic box?  

Hello,
I think the problem comes from the atmosphere in the box.
It is hardly conceivable to replace it with nitrogen or argon, but why not with CO2?
It would suffice to introduce a small piece of dry ice (solid CO2) in the small box and close the lid after a few moments.
As the CO2 is heavy, it will quickly push the air out of the box.
Why not?
Roger.
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