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/diy/ - Do It Yourself

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1787733 No.1787733 [Reply] [Original]

these plastic parts of my respiratory broke when i disassembled it to clean it, how do i fix it?

>> No.1787736

Epoxy might do it.

>> No.1787741

>>1787733
That part is a living hinge, there isn't a very good fix for this.
You could try plastic welding, heat both parts til they are melting and smash them back together, take care not to smash it too thin or it'll just instantly break.
Or put them together and mix it all up with a soldering iron, essentially melting the two halves back together.
https://www.youtube.com/watch?v=YFzgMBUDM6U

>> No.1787756

>>1787741
I can smell them sweet somkes from my chair

>> No.1787814

>>1787741
seems more like a breaking point, but i will try this method since i don't have epoxy. will i break my soldering tip with the plastic?

>> No.1788257

I'd use heavy nylon thread, marine grade, use an awl or very small drill bit and make 2 holes side by side in both upper and lower pieces about 1/8" back from where plastic broke, place simple stitches thru holes and pull snug but not tight to still allow for flex at mend. for more rigid fix apply clear epoxy over thread and original beak in plastic, allow epoxy to thoroughly saturate thread and smooth epoxy down to thin layer before it sets..

>> No.1788259

>>1787814
you'd need to add similar material back into location of "weld" to gain any strength at place of repair..

>> No.1788265

>>1787733
Probably best to go for a walk through Chinatown and see if you can pick up something from there

>> No.1788266

get a filament sample of ABS or Nylon or whatever plastic it's made of, stick a piece in a dremel, and friction weld it.

>> No.1788995

>>1788259
did that. fumes were not nice even i did it outdoor with a pc fan pull in the fumes. used also silver duct tape around it. so i basically duct taped it since the welding is very weak on this. but think it will hold and it doesn't look that terrible.

>> No.1788997

>>1788259
I would say it's either PP or PE, nylon or abs wouldn't lend well to being a living hinge, and their chemical resistance is nil.

>> No.1789000

>>1788997
>>1788259
https://www.creativemechanisms.com/blog/everything-you-need-to-know-about-living-hinges

>> No.1789342

>>1787733
Those are not critical points for attachment, if you either epoxy or screw the part in place, it will function perfectly fine. You could even just put a screw through the gray nipple right above the breaking point and put a washer on it to make sure the upper strap is retained, and it would work fine I think. But epoxy in the approximate location is the best. Of course you won't be able to disassemble it completely after that, but it's not like you need to.