Soft soldering clearance.

This topic has 5 replies, 3 voices, and was last updated 1 April 2021 at 22:21 by John Haine.

Viewing 6 posts - 1 through 6 (of 6 total)

Author

Posts
1 April 2021 at 18:23 #537518
Adrian 2
Participant
@adrian2
I am making an oil pipe fitting for a motorcycle which basically comprises a steel pipe slipped inside another steel pipe. There is no loading or pressure to resist so I think soft solder will be fine.

How much clearance should I allow for the solder to penetrate between the two parts ?

Bore of outer sleeve 9mm x 20mm long.

Thank you,

Adrian.
Advert

1 April 2021 at 18:23 #28081
Adrian 2
Participant
@adrian2
1 April 2021 at 18:30 #537525
John Haine
Participant
@johnhaine32865
As little as possible! Just enough to allow the smaller to slide into the larger. Get some white paste plumbing flux and make sure the joint faces are nicely fluxed. Could be useful to wind a couple of turns of solder around the smaller diameter and slide them down to the larger with the smaller facing up. Warm gently, when you get to the right temperature the solder will soften then suddenly flash into the joint and leave a silver meniscus at the join. Keep it hot for a few more seconds then allow to cool.
1 April 2021 at 20:14 #537542
Adrian 2
Participant
@adrian2
Very helpful thank you John.

Adrian.
1 April 2021 at 21:41 #537555
Tom Sheppard
Participant
@tomsheppard60052
Job for 638 really, Steel will soft solder with the right flux but with the diameters you are using, I really wouldn't bother.
1 April 2021 at 22:21 #537558
John Haine
Participant
@johnhaine32865
Solder will flow and fill better and be less likely to leak. Loctite needs small clearance to seal. Araldite would be better.
Author

Posts

Viewing 6 posts - 1 through 6 (of 6 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.

Advert

Latest Replies

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

- Topic
- Voices
- Posts
- Last Post
- Myford motor playing up
  Started by: vintagengineer in: Help and Assistance! (Offered or Wanted)
- 3
- 6
- 27 August 2026 at 22:34
  noel shelley
- Chronos closing down. 1 2 3 4
  Started by: Andrew Tinsley in: General Questions
- 36
- 83
- 27 August 2026 at 22:00
  southernchap
- Photography in the workshop (for the inept)
  Started by: Pippin in: Workshop Techniques
- 17
- 23
- 27 August 2026 at 21:21
  Vic
- Sieg x3 Parts
  Started by: Kevin Bennett in: General Questions
- 1
- 1
- 27 August 2026 at 20:38
  Kevin Bennett
- Dreaded leaks
  Started by: waffles in: Locomotives
- 9
- 20
- 27 August 2026 at 18:44
  vintagengineer
- How do I ream a 15mm hole on a Unimat 3 ?
  Started by: paul1956 in: Beginners questions
- 7
- 13
- 27 August 2026 at 18:12
  Howard Lewis
- New member
  Started by: donall.cullinane in: Introduce Yourself – New members start here!
- 2
- 2
- 27 August 2026 at 18:08
  Howard Lewis
- Emco Compact 5 milling table restoration
  Started by: rikt in: Manual machine tools
- 6
- 13
- 27 August 2026 at 17:35
  rikt
- Survival Challenge TV for engineers!
  Started by: Neil Wyatt in: The Tea Room
- 14
- 24
- 27 August 2026 at 15:31
  southernchap
- Flywheel material
  Started by: Speedy Builder5 in: Materials
- 14
- 23
- 27 August 2026 at 13:57
  Ian Hewson
- What is the easiest thin steel sheet to bend without cracking?
  Started by: elowen01 in: Materials
- 5
- 5
- 27 August 2026 at 12:02
  Nicholas Farr
- Reconstruction of dimensions fom a photo…
  Started by: Robin Graham in: Beginners questions
- 8
- 15
- 27 August 2026 at 10:39
  JasonB
- I built another one …
  Started by: Mick B1 in: Work In Progress and completed items
- 3
- 3
- 27 August 2026 at 09:26
  Bo’sun
- When is a threaded insert preferable to tapping directly into aluminum?
  Started by: elowen01 in: General Questions
- 16
- 20
- 27 August 2026 at 02:59
  elowen01
- The Latest INDEX to Model Engineer & Workshop (Also past issues of MEW) 1 2 3
  Started by: David Frith in: Model Engineer & Workshop
- 7
- 54
- 27 August 2026 at 00:36
  David Frith
- Cutting 25 thou grooves for a couple of circlips
  Started by: Andrew Tinsley in: General Questions
- 9
- 20
- 26 August 2026 at 21:17
  Andrew Tinsley
- Taper turning attachment
  Started by: Bernard Reilly in: Workshop Tools and Tooling
- 6
- 8
- 26 August 2026 at 20:56
  Clive Foster
- Toolroom Takeover 2026
  Started by: Pippin in: The Tea Room
- 2
- 2
- 26 August 2026 at 20:40
  Michael Gilligan
- Stuart 10V conn rod
  Started by: Neil A in: Materials
- 3
- 4
- 26 August 2026 at 19:32
  Mick B1
- Ketan Swali 1 2 3
  Started by: Bill Davies 2 in: The Tea Room
- 44
- 51
- 26 August 2026 at 18:55
  Bill Dawes
- 1904 Whitehead Vertical Gas Engine
  Started by: JasonB in: I/C Engines
- 3
- 7
- 26 August 2026 at 16:44
  JasonB
- Super Simplex Build
  Started by: Peter Hoerlein in: Work In Progress and completed items
- 7
- 21
- 26 August 2026 at 16:10
  Derek Drover
- Scam response to advert
  Started by: Lee Rogers in: The Tea Room
- 2
- 2
- 26 August 2026 at 16:04
  Derek Drover
- Parting off 1 2
  Started by: Peter Simpson 3 in: Beginners questions
- 19
- 42
- 26 August 2026 at 12:50
  Howard Lewis
- Plug in Solar 1 2 3 4
  Started by: Vic in: The Tea Room
- 30
- 97
- 26 August 2026 at 10:47
  bernard towers

Soft soldering clearance.

Soft soldering clearance.

Latest Replies

Latest Issue

September 2026

Newsletter Sign-up

Latest Replies