Britannia Boiler

Britannia Boiler

This topic has 3 replies, 2 voices, and was last updated 24 November 2009 at 23:01 by Rick Moore.

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20 November 2009 at 17:01 #45384
Rick Moore
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@rickmoore60739
Has anybody locally to me (Hull) made a 5″ gauge britannia boiler to the Norman Spink design. I need to beg, borrow or hire any flange forming plates you may have made. Alternatively has anybody had sucess by using a couple of thicknesses of thick MDF for a former?
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20 November 2009 at 17:01 #4852
Rick Moore
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@rickmoore60739
Britannia Boiler
24 November 2009 at 10:25 #45528
Tony Martyr
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@tonymartyr14488
Hell Rick

First answer is ‘No’

However having just used a block of hardwood as a former material I rather doubt that MDF will work well – Based on recent experience I think the difference in hardness between MDF and rapidly work-hardening copper sheet is probably not sufficient to prevent significant former damage however 1/16 steel sheet on top that forms the start of the radius may keep the edge shape better.
24 November 2009 at 23:01 #45558
Rick Moore
Participant
@rickmoore60739
Thanks for the reply. However I have just had a go this evening with the MDF method and it is ok. I made the largest plate, the throat plate, and took it easy with hammering. It took four heating sessions and although I will not need another boiler the 25 mm MDF former and backing plate would easily stand up to another go. I gave it a generous radius of about 1/8″ round the edges and beat the 3mm copper over with a small block of steel. 25mm MDF cost only £4.18 at B+Q for a 2′ x 4′ offcut and was easy to shape too.
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