Annealing 22swg brass sheet- is it neccecary ?

Annealing 22swg brass sheet- is it neccecary ?

This topic has 4 replies, 3 voices, and was last updated 18 January 2012 at 17:38 by David Littlewood.

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

Author

Posts
18 January 2012 at 16:06 #82376
Chris machin
Participant
@chrismachin
Hi , I’m making the ‘Polly’ steam engine out of Tubal Cains book ‘Building simple steam engines’. The boiler require a piece of 22swg brass sheet to be formed into a small cylinder. The brass sheet arrived today from the supplier but it appesrs to resist being formed into a ‘tight’ cylinder

I think if i try it it will ‘kink’ rather than form a neat cylinder !

1.Does the sheet need annealling all over and will it make it easier to form ?

2. Will the annealing damage the surface / shine on the brass or will it just polish back to its original finish ?

3. If it does need annealing do i just heat it all over to dull red then quench in water

Any help appreciated.

Thanks

Chris.
Advert

18 January 2012 at 16:06 #5877
Chris machin
Participant
@chrismachin
18 January 2012 at 17:07 #82381
JasonB
Moderator
@jasonb
What grade of brass is it?

If you have been sent one of the harder brasses such as CZ120 it will be a job to bend but a softer brass like CZ108 will form into a cylinder OK, the flanged ends are still liekly to need a couple of annealings.

It will go a dirty brown/black colour, dipping in the acid that I mentioned in your other post will get it clean enough again for soldering, dip it in teh pickle again after soldering and that will leave a dull brass so you will have to get a buffing wheel on it to bring back the shine.

I prefer to heat to cherry red then allow to cool naturally

J
18 January 2012 at 17:26 #82382
Chris machin
Participant
@chrismachin
Hi , Many thanks for your help – its appreciated

The brass is CZ108 according to the supplier (ABS Metals).

So i heat the sheet to dull red all over , let it cool naturally and then it will form easier – is that correct ?

Thanks again.
18 January 2012 at 17:38 #82384
David Littlewood
Participant
@davidlittlewood51847
Chris,

Be aware that fully annealed brass can be very soft, handle with care to avoid unsightly dents. Also, copper and most of its alloys will work harden – if you need to bend it far, you will feel its resistance increase, and that means it needs annealing again. Lastly, those alloys frequently show age hardening, that is if you anneal them and then forget about them for a while (a few days or maybe weeks) it goes back to its hard state. I can’t say for sure that the grade of brass you have will show exactly these characteristics, just be on the lookout.

On etched brass kits I find a scrub with Viakal is good to restore a clean finish.

David
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
- quality 3 and 4 jaw chucks
  Started by: Steve Huckins in: Workshop Tools and Tooling
- 5
- 7
- 8 August 2025 at 14:49
  Steve Huckins
- Which Carbide Lathe Tools?
  Started by: MarkS in: Beginners questions
- 6
- 7
- 8 August 2025 at 14:32
  old mart
- Whats app
  Started by: duncan webster 1 in: The Tea Room
- 2
- 2
- 8 August 2025 at 14:15
  JasonB
- Miniature parts maker in Leicester?
  Started by: wilson logan 1 in: Help and Assistance! (Offered or Wanted)
- 2
- 3
- 8 August 2025 at 14:05
  wilson logan 1
- The strange phenomenon of Liquid Death
  Started by: Michael Gilligan in: The Tea Room
- 5
- 9
- 8 August 2025 at 14:00
  duncan webster 1
- Just How Many File Types Do We Need?
  Started by: Nigel Graham 2 in: The Tea Room
- 6
- 7
- 8 August 2025 at 13:52
  Nigel Graham 2
- Boiler Design – issue 4765 1 2 … 10 11
  Started by: Charles Lamont in: Model Engineer & Workshop
- 29
- 263
- 8 August 2025 at 13:43
  JasonB
- Obscure Thread
  Started by: simondavies3 in: Hints And Tips for model engineers
- 7
- 11
- 8 August 2025 at 13:15
  Nigel Graham 2
- Boiler hydraulic test 4 hours 1 2
  Started by: endckr111 in: Stationary engines
- 13
- 34
- 7 August 2025 at 22:48
  endckr111
- MD65 leadscrew cross-slide stuck in nut
  Started by: leov in: Manual machine tools
- 9
- 20
- 7 August 2025 at 20:54
  old mart
- Fobco or a Clarke CMD 1225 milling capabilities? or other recommendations?
  Started by: jacobsmess in: Workshop Tools and Tooling
- 4
- 15
- 7 August 2025 at 20:46
  jacobsmess
- Arc Euro Trade Ltd. 1 2 3
  Started by: Ketan Swali in: General Questions
- 55
- 66
- 7 August 2025 at 20:07
  andy198712
- Model Turbines 1 2 … 24 25
  Started by: Turbine Guy in: Stationary engines
- 28
- 611
- 7 August 2025 at 16:44
  Turbine Guy
- Pragotron Slave Clock
  Started by: renardiere7 in: Clocks and Scientific Instruments
- 7
- 18
- 7 August 2025 at 16:28
  renardiere7
- Pratt Bernard Grip true issues
  Started by: teamricky in: Workshop Tools and Tooling
- 7
- 11
- 7 August 2025 at 16:04
  teamricky
- Will iron rivets expand to fill oversized hole?
  Started by: Arthur Jones 2 in: Locomotives
- 6
- 8
- 7 August 2025 at 14:41
  parovoz
- UK Steel Supplier? 125 x 125 x 50 BMS 1 2
  Started by: MarkS in: General Questions
- 14
- 29
- 7 August 2025 at 14:03
  Journeyman
- DELL / StarTech [mechanical incompatibilty]
  Started by: Michael Gilligan in: Electronics in the Workshop
- 3
- 11
- 7 August 2025 at 13:11
  Michael Gilligan
- Rotary table Chuck mounting.
  Started by: John Gray 7 in: General Questions
- 8
- 10
- 7 August 2025 at 12:31
  JasonB
- Baumann Buco 1311 clock
  Started by: Clock polisher in: General Questions
- 1
- 1
- 7 August 2025 at 11:10
  Clock polisher
- New member (a young’un)
  Started by: tomread12 in: Introduce Yourself – New members start here!
- 7
- 8
- 7 August 2025 at 10:39
  parovoz
- Pre-Setting 4-Jaw Chucks Hack for Quick Centering
  Started by: dbwjbp in: Workshop Techniques
- 11
- 12
- 7 August 2025 at 10:06
  noel shelley
- Bandsaw vs Powered Hacksaw vs Chop Saw?
  Started by: MarkS in: General Questions
- 18
- 23
- 6 August 2025 at 21:53
  grubscrew
- Fobco Star (Universal) Milling capabilities? or a Clarke CMD 1225?
  Started by: jacobsmess in: Workshop Tools and Tooling
- 1
- 1
- 6 August 2025 at 21:26
  jacobsmess
- Save your Swarf!
  Started by: Vic in: The Tea Room
- 9
- 9
- 6 August 2025 at 21:12
  Grizzly bear

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

View full reply list.

Latest Issue

August 2025

Buy Latest/Back Issues

Newsletter Sign-up

Latest Replies