Chemi Blacking

[mickParticipant @mick65121]

Hi All.

Now I remember reading something about chemi blacking the other day, but have forgotten exactly where, so could I scratch your collective brains again and ask for a suitable product to blacken some cylinders and if possible a source of supply.

Thanks in advance

[mickParticipant @mick65121]

[Ramon WilsonParticipant @ramonwilson3]

Are they steel cylinders Mick? If so Jenolite Kold Blak will do the trick though it does not wear as well as the professional process which involves heat I believe.

 

One of the model engineering suppliers used to sell a similar product at shows – sorry can’t help you with a name perhaps someone else can help.

 

Kold Blak has a long shelf life – I bought mine in the mid eighties and it still works fine.

 

I’m sure others will add to this

 

Regards – Ramon

 

 

 

 

[Jim GreetheadParticipant @jimgreethead]

I am using Blackfast – a room temperature process for iron, steel and zinc. Mine came from John Lines in Queensland (Australia) whose email address is john@ protecmetals.com.

 

The kit came with the chemicals, sealable containers in which to use and keep the diluted chemicals already labelled, comprehensive and clear instructions (the process is simple) and product safety data sheets for each of the chemicals.

 

The chap who recommended it to me has had his for about 5 years and it still works.

 

It works for me.

 

Jim

[Robert Miller 1Participant @robertmiller1]

There is a detailed article on Parkerizing in the latest newsletter of the Huston, Texas based “Home Metal Shop Club“.

 

This club seems to be very active and has a lot of good info on their website.

 

Bob

[oilcanParticipant @oilcan]

GLR sell both a hot black solution as well as a cold (room temp.) solution.

only used the cold solution . worked O.K.

usual disclaimer

[MikeParticipant @mike89748]

Various products for blacking steel and sold by most gun shops.

[KWILParticipant @kwil]

Metablack from Delway technical Services is a good cold solution. usual disclaimer

[John CoatesParticipant @johncoates48577]

Will blacking help prevent rust ? Only as as some stuff I turned last year seems to have developed a few rust spots over the winter. Was originally black bar and now obviously I’ve removed the outer layer to produce the finished piece. As it’s a tailstock die holder I need it to have good life expectancy without being eaten away by rust.

 

[MikeParticipant @mike89748]

The gun blacking compounds I have used do not prevent rust. In fact, unless the parts are first scrupulously cleaned after blacking, then oiled, they seem to promote rust – probably because of their acidic nature.

[KWILParticipant @kwil]

Once you have blacked it and then washed it, dewatered it, you then must immerse in oil and allow the oil to penetrate the coating. Leave it for some time, say 1-2 hours. Then drip “dry”. If kept “oily” it seems OK but if you wipe all the oil away and then leave it in a “wet” atmosphere, it will rust. Commercial blacking is a lot harder and durable.

[mickParticipant @mick65121]

Thanks for all suggestions, certainly something to be getting on with.

Regards.

Mick

[mickParticipant @mick65121]

Is there a web site or e-mail address for Delway Technical Services as all I can find is a postal address and phone number.

There dosn’t seem to be a UK supplier for Kold Blak and there now seems to be a rap band of the same name!

Is the £45 GLR are asking for their kit what I should be looking to pay for chemi blacking?

Thanks.

Mick

[Keith LongParticipant @keithlong89920]

Hi Mick

Have a look at the following website:-

http://www.finescale.org.uk

If you look down the navigation side bar you’ll see a link to metal blackening. I believe the products are made by Carrs. I’ve not tried the version for white metal / steel, but I have used the version for brass and been very happy with it. The brass version is all cold operations and I believe so are the others. The small pot at £4.50 sounds to be worth a try.

Keith

[Ramon WilsonParticipant @ramonwilson3]

Ah Mick, gone eh – like near everything else these days.

 

However how about this

 

Appears they do a litre kit for under £20 plus post. That’s a lot of cylinders

 

Hope this helps – Ramon

[mickParticipant @mick65121]

Hi Ramon.

Thats a great help, the price is a bit more like it! Thanks.

Regards.

Mick

[Sub MandrelParticipant @submandrel]

Can anyone point me towards a source of Jenolite Koldblak?

Google doesn't seem to be much help for some reason.

Neil

[RJWParticipant @rjw]

I've used this stuff for years, mainly on gunmetal pocket watch cases, but also used it to revive previously blacked tooling, never had any rust come back once soaked in oil!

**LINK**

[Dan SmithParticipant @dansmith73991]

I've never used it, but Frost do a chemical blacking kit too – **LINK**

[John Stevenson 1Participant @johnstevenson1]

I put a brand new kit on ebay last week to get rid of it but didn't get any takers.

Bit surprised as it was unopened but just need it out the way.

**LINK**

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