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From: David Billington <djb@invalid.com>
Newsgroups: rec.crafts.metalworking
Subject: Re: make - forge? - wedge for feathers-and-wedge rock-split
Date: Sat, 30 Mar 2024 15:18:31 +0000
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On 30/03/2024 12:55, Peter Fairbrother wrote:
> On 29/03/2024 18:33, Joe Gwinn wrote:
>> On Fri, 29 Mar 2024 17:40:58 +0000, Peter Fairbrother
>> <peter@tsto.co.uk> wrote:
>
>>> I'd probably use O1 ground flat stock, but only because it is readily
>>> available. 
>
>> What about S7 steel:
>>
>> .<https://www.mcmaster.com/products/metals/steel~/oversized-shock-resistant-s7-tool-steel-rods-and-discs/> 
>>
>>
>> .<https://www.mcmaster.com/products/metals/steel~/oversized-shock-resistant-s7-tool-steel-bars/> 
>>
>>
>> Or 1045 steel:
>>
>> .<https://www.mcmaster.com/products/metals/steel~/high-strength-1045-carbon-steel-sheets-and-bars/> 
>>
>>
>> .<https://www.mcmaster.com/products/metals/steel~/high-strength-1045-carbon-steel-rods-and-discs/> 
>>
>>
>> Or 4340 steel:
>>
>> .<https://www.mcmaster.com/products/metals/steel~/high-strength-4340-alloy-steel-rods/> 
>>
>
>
> All good choices.
>
> Ah yes the wonderful McMaster-Carr. Unfortunately they only sell to 
> VAT-registered businesses in the UK, and shipping starts at about $300 
> (ouch!!).
>
> You can get 4340 and S7 in the UK, but I don't know where you could 
> get suitable flats to make wedges in reasonable small quantities.
>
> 1045 is about the same as EN8, which is sold a bit more widely, but 
> again I don't know where to get suitable flats in small quantities.
>
> EN9 would do better (quench-hardens, unlike EN8), but again I don't 
> know where to buy suitable flats.
>
> Anyone?
>
>
> The only reason I suggested O1 ground flat stock is because it is 
> readily available in the UK, eg on ebay, in small quantities. And it's 
> suitably strong and hard, it's obviously flat not round bar, and can 
> be had in the right size for about £40 for 500mm delivered. Not cheap, 
> but I don't know where to do better, especially if you include 
> carriage. There are occasional bargains to be had too.
>
> 80 x 12 x 500mm, £40.50
> https://www.ebay.co.uk/itm/395054999101
> 80 x 10 x 500mm £38.82
> https://www.ebay.co.uk/itm/143198127946
>
> Not sure how thick or wide you might want.
>
>
> Actually, I'd buy wedges rather than make them, but ymmv.
>
>
> Peter Fairbrother

I've got some 6mm EN8 plate that I could part with some bits of. I've 
had items profiled out of it so some sections aren't much use for much 
else and would easily make the wedges I expect.