Member postings for JohnF

Here is a list of all the postings JohnF has made in our forums. Click on a thread name to jump to the thread.

24/10/2009 15:53:39

Hi Peter,

Although you can use the materials suggested i.e. any carbon rich material--chrcoal made from leather, wood, bone etc you need activators added to get good results[bicarbonate of soda is one] As already pointed out coal dust is a no no!

I harden quite a lot of small components and would highly recomend Kasnit or similar to get good consistant results.

I f you want a thick case and are soaking the components for several hours then be aware of grain growth in the core--you need to do a multi heat treatment to relieve this then finally harden the component.

Regards John.

Thread: Metal filler?

30/08/2009 10:33:06

Depends on the size of hole etc but try Lumiweld allumininum solder --I've use thie to repair al kindes of ally products and it works well.

Alternative ly the suggestion of drilling out to alarger size and fitting a plug [with say loctite] then reworking to your requierments may be best..

John

Edited By Stephen John Fawcett on 30/08/2009 10:33:59

Thread: Ground steel bar

30/08/2009 10:02:27

Try J & L Supplies they supply 1m lengths of silver steel, fairly expensive but it will do your job I'm sure http://www.mscjlindustrial.co.uk/cgi/insrhm

Regards John

Edited By Stephen John Fawcett on 30/08/2009 10:03:03

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