Welding plastic

Welding plastic

This topic has 4 replies, 4 voices, and was last updated 8 November 2012 at 07:44 by Ian P.

Viewing 5 posts - 1 through 5 (of 5 total)

Author

Posts
4 November 2012 at 17:58 #102772
Windy
Participant
@windy30762
Being a recycler the plastic light switch broke on my old Renault 5 and I have repaired it by welding.

These switches are very prone to failure I have 3 faulty ones.

The part welded was about 1mm x 3mm and only took a few seconds to weld and reinforce.

It had a look of Nylon but on fusing the parts together the fumes were very toxic my eyes were watering and stinging.

Does any one know the type of plastic it could be made from.

Windy
Advert

4 November 2012 at 17:58 #22305
Windy
Participant
@windy30762
4 November 2012 at 18:33 #102773
Michael Cox 1
Participant
@michaelcox1
Windy, the part was probably made from acetal resin. On heating this decomposes to formaldehyde which is very pungent causing the symptoms you describe.

Mike
7 November 2012 at 22:19 #103104
Cyril Bonnett
Participant
@cyrilbonnett24790
**LINK**

If ABS it can be successfully 'glued' with MEK (Methyl ethyl ketone), shavings dissolved in it can be used to build up areas, but it does dissolve ABS.
8 November 2012 at 07:44 #103122
Ian P
Participant
@ianp
Posted by Windy on 04/11/2012 17:58:52:

Being a recycler the plastic light switch broke on my old Renault 5 and I have repaired it by welding.

Windy

Windy, if the break is across the tiny bit near the point of your arrow I think you are snookered.

If you are a recycler than surely its acceptable to get a switch from a car breaker? (Or adapt something from your junkbox, to keep your car on the road)

Ian

————

Doh! After reading your post again I realise I was talking rubbish since its already fixed. I hope it lasts though.

Edited By Ian Phillips on 08/11/2012 07:47:44
Author

Posts

Viewing 5 posts - 1 through 5 (of 5 total)

Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

Code of Conduct

Latest Replies

Viewing 25 topics - 1 through 25 (of 25 total)

- Topic
- Voices
- Posts
- Last Post
- Orbital – Not your Usual Oscillator!
  Started by: JasonB in: Stationary engines
- 14
- 23
- 23 June 2026 at 16:10
  Howard Lewis
- Advice required
  Started by: janet.ho001 in: Introduce Yourself – New members start here!
- 4
- 6
- 23 June 2026 at 16:05
  duncan webster 1
- 3D Printing in the Home Workshop
  Started by: Colin Heseltine in: 3D Printers and 3D Printing
- 1
- 1
- 23 June 2026 at 14:54
  Colin Heseltine
- Gas Tap Valves. Vintage 1 2 3
  Started by: dee in: Related Hobbies including Vehicle Restoration
- 18
- 51
- 23 June 2026 at 14:42
  howardb
- Clarkson Horizontal – Redefined in Metric
  Started by: JasonB in: Stationary engines
- 8
- 23
- 23 June 2026 at 14:07
  JasonB
- Rapidor Manchester re-build
  Started by: homecat88 in: Introduce Yourself – New members start here!
- 3
- 4
- 23 June 2026 at 13:41
  gary
- Running 380V 3-phase motor on 230V 1-phase 1 2
  Started by: jimalm in: Electronics in the Workshop
- 14
- 32
- 23 June 2026 at 13:01
  Robert Atkinson 2
- Hot radiators in summer
  Started by: Gary Wooding in: The Tea Room
- 7
- 8
- 23 June 2026 at 12:13
  JasonB
- Taylor Hobson Pantograph Engraver Model D 1 2
  Started by: jaCK Hobson in: Workshop Tools and Tooling
- 10
- 41
- 23 June 2026 at 11:15
  jaCK Hobson
- Rob Roy Build
  Started by: Dalboy in: Locomotives
- 4
- 15
- 22 June 2026 at 21:24
  Dalboy
- Help identifying a mystery thread
  Started by: Beardy Mike in: Beginners questions
- 8
- 15
- 22 June 2026 at 19:04
  Nicholas Farr
- Unwanted Car Software Update
  Started by: Chris Crew in: The Tea Room
- 12
- 16
- 22 June 2026 at 16:48
  paul1956
- Oiling Lathe Ways
  Started by: Blue Heeler in: Beginners questions
- 7
- 8
- 22 June 2026 at 13:34
  Bazyle
- Farm Boy dimensions
  Started by: Speedy Builder5 in: Stationary engines
- 3
- 4
- 22 June 2026 at 13:02
  JasonB
- Nickel Silver
  Started by: Carl in: Materials
- 10
- 15
- 22 June 2026 at 11:52
  Roderick Jenkins
- Flame Licker Engine & USA made 1930’s Empire Water Pump
  Started by: Blue Heeler in: Miscellaneous models
- 2
- 2
- 22 June 2026 at 10:03
  Bazyle
- Film Projectors/Astronomy/Radio Ham-Mark Stuckey
  Started by: Mark Easingwood in: Related Hobbies including Vehicle Restoration
- 1
- 1
- 21 June 2026 at 22:40
  Mark Easingwood
- Baffled by flatted-shank spot weld drills
  Started by: Bill Phinn in: Workshop Tools and Tooling
- 4
- 8
- 21 June 2026 at 22:26
  Bill Phinn
- Wallace valvegear simulator 1 2
  Started by: Kevan Shaw in: General Questions
- 7
- 27
- 21 June 2026 at 21:32
  Kevan Shaw
- All things Beaver Mill 1 2 … 9 10
  Started by: Robert James 3 in: Manual machine tools
- 43
- 229
- 21 June 2026 at 21:16
  Mark Rand
- Green Dragon Sustainable Fuel
  Started by: Neil Wyatt in: Locomotives
- 14
- 24
- 21 June 2026 at 21:07
  Mark Rand
- Is improvement work on this forum/website still ongoing? 1 2 … 5 6
  Started by: Ian P in: Website Questions, Comments, and Suggestions
- 38
- 140
- 21 June 2026 at 19:59
  bernard towers
- Emco Compact 5 milling table restoration
  Started by: rikt in: Manual machine tools
- 5
- 9
- 21 June 2026 at 15:39
  Eric Lucas
- Firehole door for 5inch gauge
  Started by: Perko7 in: Locomotives
- 3
- 3
- 21 June 2026 at 15:22
  Weary
- New Toy Day
  Started by: Julie Ann in: Workshop Tools and Tooling
- 10
- 15
- 21 June 2026 at 15:10
  old mart

Viewing 25 topics - 1 through 25 (of 25 total)

View full reply list.

Latest Issue

July 2026

Buy Latest/Back Issues

Newsletter Sign-up

Latest Replies