help – cleaning for soldering

help – cleaning for soldering

This topic has 6 replies, 4 voices, and was last updated 2 September 2012 at 13:34 by modeng2000.

Viewing 7 posts - 1 through 7 (of 7 total)

Author

Posts
1 September 2012 at 21:46 #97603
nigel jones 5
Participant
@nigeljones5
got a problem – expanded copper tubes into firebox but they leak – not suprised as the reaming was horrid! I want to caulk them in but the steel is no where near clean enough to take comsol. I cant get in with even a small wire brush so is there a chemical solution (no pun intended!!)
Advert

1 September 2012 at 21:46 #6322
nigel jones 5
Participant
@nigeljones5
2 September 2012 at 07:24 #97614
WALLACE
Participant
@wallace
Can you not ‘get in there’ with a sandblaster ? It works well on stainless steel I’ve had to silver solder in the past.

W.
2 September 2012 at 09:20 #97616
CuP Alloys
Participant
@cupalloys
Suggest you don't use sand blasting, sandpaper, emery cloth or similar. They are prone to leaving grit or glue residue behind which fluxes will not remove. Result – pinholes in the joint so the "repair" still leaks!

Most weak acids will remove scale eg citric, acetic (vinegar) or proprietary kettle cleaners.

keith
2 September 2012 at 11:20 #97622
modeng2000
Participant
@modeng2000
Hi Keith,

Is the cupalloys website down today?

John
2 September 2012 at 11:39 #97623
CuP Alloys
Participant
@cupalloys
Hi John,

I think it is routine maintenace on the server. Experience tells me it will be running normally shortly.

My apologies for the inconvenience.

keith
2 September 2012 at 13:34 #97630
modeng2000
Participant
@modeng2000
Thanks Keith, doesn't it always happen when something needs to be referred to!

John
Author

Posts

Viewing 7 posts - 1 through 7 (of 7 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
- Bending copper tube?
  Started by: Bo’sun in: Workshop Techniques
- 14
- 17
- 14 July 2026 at 21:17
  vintagengineer
- Myford VMC Spindle Advice Please. 1 2
  Started by: Nigel Graham 2 in: Manual machine tools
- 12
- 49
- 14 July 2026 at 20:02
  Graham Meek
- What is this? 1 2
  Started by: Sonic Escape in: General Questions
- 18
- 26
- 14 July 2026 at 19:52
  Andy Stopford
- Offen imperial bore mic gauge.
  Started by: Graeme Seed in: Workshop Tools and Tooling
- 6
- 13
- 14 July 2026 at 19:30
  Graeme Seed
- THE MONTHLY TIPS COMPETITION – THE ENTRY THREAD! 1 2
  Started by: Neil Wyatt in: Hints And Tips for model engineers
- 19
- 46
- 14 July 2026 at 17:40
  Neil A
- Pipe Size Puzzle.
  Started by: Nigel Graham 2 in: Locomotives
- 5
- 7
- 14 July 2026 at 17:02
  Nigel Graham 2
- QCTP 1 2
  Started by: James A in: Workshop Tools and Tooling
- 19
- 30
- 14 July 2026 at 17:00
  Diogenes
- Smart & Brown model A spindle lock
  Started by: old mart in: Workshop Tools and Tooling
- 2
- 9
- 14 July 2026 at 14:53
  old mart
- Bonding brass hubs to steel
  Started by: mikemunson in: Beginners questions
- 3
- 4
- 14 July 2026 at 11:27
  Michael Gilligan
- Lathe coolant applicators 1 2
  Started by: lucerne in: Manual machine tools
- 16
- 30
- 14 July 2026 at 09:15
  Julie Ann
- Bridgeport Series 1 CNC 1 2 3
  Started by: tomcnc in: CNC machines, Home builds, Conversions, ELS, automation, software, etc tools
- 12
- 58
- 14 July 2026 at 01:49
  seemack
- Small electromagnetic pump via E-Bay
  Started by: Clive Foster in: Manual machine tools
- 5
- 8
- 13 July 2026 at 20:02
  John Hinkley
- Windows 11 background pictures
  Started by: old mart in: The Tea Room
- 4
- 4
- 13 July 2026 at 19:49
  Mark Rand
- What Did You Do Today 2026 1 2 … 5 6
  Started by: JasonB in: The Tea Room
- 41
- 139
- 13 July 2026 at 17:58
  duncan webster 1
- pitman arm
  Started by: martin haysom in: General Questions
- 6
- 9
- 13 July 2026 at 17:00
  Dave Halford
- Martin Cleeve Swing Clear Retracting Toolholder 1 2
  Started by: Roger Harvey in: Workshop Tools and Tooling
- 18
- 27
- 13 July 2026 at 15:21
  ega
- Boiler problem
  Started by: Zan in: Help and Assistance! (Offered or Wanted)
- 5
- 8
- 13 July 2026 at 14:25
  Zan
- First Printer
  Started by: vintagengineer in: 3D Printers and 3D Printing
- 7
- 8
- 13 July 2026 at 13:47
  John Haine
- Mini-lathe parts source
  Started by: Dunc in: General Questions
- 7
- 12
- 13 July 2026 at 08:28
  Dell
- Cleaning years of nicotine exposure and some touch ups
  Started by: rumz in: Traction engines
- 5
- 6
- 12 July 2026 at 18:00
  Georgineer
- 1930 Austin 12 with 3rd brush dynamo
  Started by: john fletcher 1 in: General Questions
- 15
- 23
- 12 July 2026 at 12:00
  Howard Lewis
- Metal saw
  Started by: Speedy Builder5 in: Workshop Techniques
- 4
- 4
- 12 July 2026 at 10:25
  martin haysom
- SmallRig Cheese Plate
  Started by: Michael Gilligan in: Workshop Tools and Tooling
- 4
- 10
- 12 July 2026 at 10:05
  Michael Gilligan
- Another what’s this thread….
  Started by: Hollowpoint in: General Questions
- 6
- 9
- 11 July 2026 at 23:48
  Nigel Graham 2
- Air con cost?
  Started by: Ian Parkin in: The Tea Room
- 7
- 8
- 11 July 2026 at 19:34
  Mark Rand

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