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

dillera at gmail.com dillera at gmail.com
Wed Sep 25 17:28:25 EDT 2019


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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