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

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Pilatus

Member

Location

cotswolds

• May 29, 2020

• #1

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.

 

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Dry Rot

Member

Livestock Farmer

Location

Scottish Highlands

• May 29, 2020

• #2

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/

 

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br jones

Member

• May 29, 2020

• #3

Can you put some cable ties around it to help

 

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Richy12

Member

Location

Fermanagh, N Ireland

• May 29, 2020

• #4

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

Member

Livestock Farmer

Location

East Sussex

• May 29, 2020

• #5

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

Member

• May 29, 2020

• #6

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

 

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Pilatus

Member

Location

cotswolds

• May 29, 2020

• #7

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

Member

Location

nr. preston

• May 29, 2020

• #8

[/QUOTE]

milkloss said:

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?

Click to expand...

My thoughts exactly, possibly not very helpful sorry.

 

TheTallGuy

Member

Location

Cambridgeshire

• May 30, 2020

• #9

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.

 

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topcat2006

Member

Arable Farmer

Location

The Cotswolds

• May 30, 2020

• #10

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

 

peewit

Member

• May 30, 2020

• #11

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

Member

Location

Hampshire

• May 30, 2020

• #12

+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!).

 

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br jones

Member

• May 30, 2020

• #13

Find someone witha 3d printer ,

 

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Pilatus

Member

Location

cotswolds

• May 30, 2020

• #14

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

Member

Mixed Farmer

Location

northampton

• May 31, 2020

• #15

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

 

How much

Member

Location

North East

• May 31, 2020

• #16

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

 

P

Pilatus

Member

Location

cotswolds

• May 31, 2020

• #17

ih1455xl said:

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

Click to expand...

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.