Instructables

Method of mending plastic

Picture of Method of mending plastic
Repair broken plastic parts by pressing metal pieces into the material with a soldering iron. The technique can also be used for fabrication or reinforcement.

The photos show the repair of the arm which holds paper on an adding machine.

I consider smaller, more compact instructions to be preferable, but Instructables
has been refusing to publish this one, presumably because it consists of only
one picture, the intro.

I'll add a step to test this theory.
 
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Step 1: A broken piece, or one needing reinforcement

Picture of a broken piece, or one needing reinforcement
MendDetail01_DSCN8820.JPG
MendDetail02_DSCN8821.JPG
MendDetail-3_DSCN8823.JPG
It seems to me the intro covers it, please comment if it is unclear,
and you prefer clicking through a breakdown of the process.

You bridge the broken parts with metal ... wire works well, and press the
metal into the plastic with something hot enough to melt plastic, a soldering
iron is well suited.

Once the wire (metal) is melted in, smoosh some plastic over it.

Here's one of the arms which holds the paper roll for an adding machine.

It is broken.

Step 2: Fit a bit of wire

Picture of fit a bit of wire
I've cut and bent a bit of wire.

Step 3: Press the mending piece into the plastic

Picture of press the mending piece into the plastic
I've pushed with a soldering iron on the wire, melting it into the plastic.

Step 4: Tidy it up a bit

Picture of tidy it up a bit
smooth over the repair by smooshing.

You can see I used another piece of wire in addition to
the one documented.
admin5 years ago
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admin5 years ago
Hello, and welcome to the Instructables community! It's great that you've decided to tell the world about something you've made by publishing an Instructable. We just wanted to let you know that your project still needs a little more work if you want it to be well received on Instructables. Projects that don't include certain basic elements tend not to get the attention that they deserve, and so we'd love for you to check out the list below of what makes a successful Instructable. Successful projects on Instructables include: - clearly written details of a finished project with instruction - as many steps as are necessary to explain your project - clear images that you took of your project for most, if not all of your steps - an intro image - proper spelling and grammar - appropriate cautions or safety considerations I'll give you another opportunity to make any final changes to your project before we publish it. Once you're all set to go, please republish your project and send me a quick comment letting me know that you've made some changes. I'll give it a quick final check to make sure you're on the right path, and then remove this note. Thanks for your submission and we hope to see your project published soon!
neorazz4 years ago
i fix stuff with paper clips and a jet lighter all the time  just heat up the paper clip[ till its cherry red and jam it thru  then smooth it out there less burn marks in the end
ktenney (author)  neorazz4 years ago
Good idea! and no need for a soldering iron.

Thanks,
Kent
Bondo5 years ago
Thanks for sharing this.. Cheap, simple and expeditious. How about using wire mesh and/or heating the metal and pressing that into the plastic?
ktenney (author)  Bondo5 years ago
Excellent idea. Wire screen could be be manipulated with an iron. Metal screen disperses heat really quickly, fiberglass screen might be better, embed without puddling the plastic.
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