Yes, Starbeck had A6's until mid 1951, so there's a fair chance that they would have worked into York in the early years of British Railways, up to their transfer in 1951.
So, let's get started. The first thing, I intend to build, is the locomotive body, having already just built a chassis for an A6. Following Arthur's suggested sequence of construction the first thing to do is to part off and bend up the footplate. On this kit, the footplate is in two parts, with a top section on which the various slots and holes for handrails, lamp irons, etc. are etched and a lower section which contains the buffer beams and side valences. This section needs to be folded prior to its assembly to the upper section and here I have departed from Arthur's sequence in that I have opted to do the most difficult folding operation first - the two valences - as these involve folding over six inches of metal, on each side, to form the valences.
For this I normally sit the section on a flat block of wood and then locate a steel ruler against the fold line of the section to be folded. This has the advantage that it prevents the actual folding operation from bending or deforming the rest of the footplate, provided that the steel ruler is held down very firmly. The part to be folded is then 'teased' into the fold, gradually, using the edge of another steel rule. It is important not to try and achieve the full 90 degree fold in a single pass, as this will stretch and deform the folded part, so a little at a time is my chosen method.
Once the folded part - in this case the valence - is angled, then the footplate can be laid flat on the rubber cutting board, again with the steel ruler pressed down firmly and seated into the fold line, and the folded part can then be teased into a 90 degree fold using athe edge of another steel ruler. The key thing, when doing this, is to maintain the central part of the footplate flat to prevent any distortion. The machined edge of the steel ruler should ensure that the folded part is at 90 degrees to the footplate.
As ever, photographs probably illustrate this far better than words can. So now we have the footplate with the two valences folded down, which does give this part much greater rigidity.
Edited by mikemeg, 02 April 2012 - 12:06 .