[vcf-midatlantic] This is the coolest thing. Fixing broken/missing plastic with baking soda and super glue.

Sentrytv sentrytv at yahoo.com
Wed Sep 25 17:51:30 EDT 2019


JB KWIK EPOXY
sets very quickly
But is very hard
And can be molded with a Dremel using the correct bits!

Sent from:
My extremely complicated, hand held electronic device.

> On Sep 25, 2019, at 5:31 PM, Jeff Salzman via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org> wrote:
> 
> Bondo doesn't set as quickly, and if not mixed properly, won't set
> correctly.
> 
> Besides, Bondo gets warm while it cures and may not be good for the plastic
> when it does.
> 
> On Wed, Sep 25, 2019, 5:28 PM andy diller via vcf-midatlantic <
> vcf-midatlantic at lists.vcfed.org> wrote:
> 
>> Why not just use some bondo?
>> 
>> -andy
>> 
>> 
>> 
>>> On Sep 24, 2019, at 3:03 PM, Herb Johnson via vcf-midatlantic <
>> vcf-midatlantic at lists.vcfed.org> wrote:
>>> 
>>> The video referenced, is a bit long and repetitive. Here's the short
>> version.
>>> 
>>> Materials needed: Baking soda and presumably generic superglue
>> (cyanoacrylate) and some aluminum foil taped to a surface. Of course, a
>> broken plastic part. You'll need some very small files.
>>> 
>>> The goal is to build up material on the broken part, to shape by filing
>> with a file, into the desired shape for repair. The "desired shape" may be
>> determined by comparison with an unbroken part. The aluminum foil, is a
>> convenient non-absorbant and disposable surface. The baking soda provides
>> some bulk for the glue and may help accelerate the glue to dry.
>>> 
>>> Instructions:
>>> 
>>> You have a part with a broken tip or point or area.
>>> Plan in some fashion, the shape and size of the new repair.
>>> Get some superglue and a teaspoon's worth of baking soda.
>>> use aluminum foil as a working surface
>>> 
>>> tape the aluminum foil to your workspace table.
>>> dump some baking soda on the foil.
>>> dump ELSEWHERE on the foil, a glob of superglue
>>> repeat the following quickly (less than a second)
>>> 
>>> dip the broken surface lightly into the superglue blob.
>>> dip the wetted surface lightly into the pile of baking soda.
>>> 
>>> repeat that many times, to form a blob of hardened superglue/powder.
>>> Try to make the shape of the glob "like" the size of your part.
>>> 
>>> It will harden quickly but give it some time to harden.
>>> You may have to repeat the process to shape the built-up part.
>>> 
>>> Look at your "plans", and use the files to shape the built
>>> up repair to the desired shape. Don't use cutting tools (snips,
>>> saws) because they will bust it.
>>> 
>>> Try to fit or assemble your repaired part. Make adjustments as needed,
>>> to either add more powder/glue or file it away.
>>> 
>>> https://www.popularmechanics.com/science/tips/a584/2569841/
>>> 
>>> The Mythbusters - who repair a LOT - cover this and other means of glue
>> plus filler plus accelerants. They actually know WHY things work or don't,
>> and tell you.
>>> 
>>> Regards,
>>> Herb Johnson
>>> 
>>> 
>>> --
>>> Herbert R. Johnson, New Jersey in the USA
>>> http://www.retrotechnology.com OR .net
>>> preserve, recover, restore 1970's computing
>>> email: hjohnson AT retrotechnology DOT com
>>> or try later herbjohnson AT retrotechnology DOT info
>> 
>> 



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