Gluing Plastic together ,is it very successsful if item understrain when in use?

[Pilatus]

The plastic that the two controls cables fit into on my loader 4way control operated by joystick, has broken in half (as per attached photos). Is it unrealistic to think some sort of plastic glue will join it together for very long?
Any thoughts from your experience of repairing plastics ,that come under load appreciated.

 

[Dry Rot]

I have used a two part glue for repairing the plastic dash on a 20 year old tractor and the repaired section is probably stronger than the original. Plastics are difficlt because there are so many different formulations of plastic and a lot require their own glue. The experts are 3M. Give them a ring and ask to speak to their technical department. There should also be previous threads on gluing plastic on here.

https://www.3m.co.uk/3M/en_GB/bonding-and-assembly-uk/applications/material-bonding/engineered-plastics/

 

[br jones]

Can you put some cable ties around it to help

 

[Richy12]

Fibreglass resin is the strongest stuff I've seen for the likes of this.

As said if you can put a cable tie on it to take some pressure might help. I guess it has just got brittle with age?

 

[milkloss]

Unless a new one is going to cost big bucks don't bother, really don't. If it's similar to an alo stick then it'll be a load of priicking about only to give up just when you think you're onto a winner.

you can tell I've been there right?

 

[Deutzdx3]

Qbond works well on that type of plastic. Uses a powder. Very reliable. Fibreglass won't stick to abs plastic or EPDM.

 

[Pilatus]

Many thanks for your posts.
I have a problem as most parts of my problem are now unobtainable. Long story but here we go , last week when doing some forestry work a length of wood kicked up by the rear tractor wheels and caught the cable controls to the front end loader control block, which snapped off one the spool valve end where it joins the cable.

 

[tomlad]

[/QUOTE]

Unless a new one is going to cost big bucks don't bother, really don't. If it's similar to an alo stick then it'll be a load of priicking about only to give up just when you think you're onto a winner.

you can tell I've been there right?

My thoughts exactly, possibly not very helpful sorry.

 

[TheTallGuy]

I suspect that gluing will result in an inherent weakness - as good as the glue might be the rest of the plastic will have lost some of the structural integrity produced by the forming process & probably deformed a bit too. It might be possible to inset some "dog-bones"/H pieces across the joint to relieve the stresses on the edges, but no guarantee of reliability.

 

[topcat2006]

Take it to machine shop and have a replacement machined from PTFE or similar?

 

[peewit]

Some good video's on you tube on plastic welding. They make it look easy with a soldering iron. Might be worth practicing on a piece of scrap.

 

[Swarfmonkey]

+1 for welding, assuming it's one of the plastics that can be welded (ABS, PVC, PE being three I remember off the top of my head that can be welded).

If you don't want to DIY then have a word with your local motorcycle dealer, they'll probably know someone who can do it (it's a whole lot cheaper to weld a cracked fairing on a bike than replace the whole thing!).

 

[br jones]

Find someone witha 3d printer ,

 

[Pilatus]

Many thanks for the posts. I think I may be able source a new block from "Shortlineparts llc" at Sioux Falls in the USA, I will contact them.

 

[ih1455xl]

That looks like it’s off a quickie loader joystick if so there still available

 

[How much]

I don't think it will glue or if it does it wont last very long , assuming you cant get a new part it is very likely you could get a new part 3 d printed its now much more common that you think and as long as they use a good base plastic such as ASA , ABS or glass filled Nylon it will outlast you

 

[Pilatus]

That looks like it’s off a quickie loader joystick if so there still available

How right you are but there are a few makes which all look the same but as per usual they are slightly different but I am on the case.