The exterior of the caravan now painted, it was possible to re-fit the aluminium door frame extrusions but as they went on something looked amiss. This sense of discontent continued as the edging frames went onto the doors themselves; there was nothing else for it, the aluminium extrusions would have to be re-anodised.
Where an annodised surface shows corrosion re-annodising is not a straightforward process. Anodising will highlight any imperfections and furthermore acid is used to prepare the aluminium for the process but the acid actually eats into any corrosion. Moreover, there is only a certain amount of preparation that can be done once the aluminium has corroded to the extent of becoming pitted. Hence the process of re-anodising old surfaces is often a process of compromise. Nonetheless, compared with the fresh paintwork, the original anodisng now looked markedly scruffy and so all the edgings were again removed and this time sent to the anodisers along with a number of other items from around the caravan.
At the same time thought was given to the door hinges for these also appeared to be anodised; closer inspection though suggested they were die-cast items but significantly they carried the name West Alloy Ltd and the part number 3170. An internet search showed that the company was still in existence and more astonishingly still listed the part number as a current product! Surprise and excitement grew further to discover that the complete door lock assembly, a Caraloc 400 is also still manufactured albeit now with a vaguely more sculptured look. West Alloy does not sell directly to the public but Leisure Shop Direct of Ilfracombe proved to be a most helpful supplier.
By late February the hinges and lock assembly had arrived, the anodised items and so to re-chromed items from Derby Platers had also all come back and so the door could finally be put back together. The re-anodised items were much as expected with the door items looking so much cleaner but still showing a certain weathered look.
There is a small aluminium panel which covers the cill below the door and this was re-fitted in conjunction with the door frame, a difficult and delicate process, though much easier than some of the door edgings proved to be! Indeed, it was only after some minor alterations would the lower door, bottom edging actually fit. The doors could now be hung and with much relief, for there had been considerable work in this area, the doors filled the frame correctly. However, the situation was not quite so straightforward. Even though everything was square, the door catch would not secure properly on the striker plate. I remembered from my first Casetta that behind the door frame surround on the lock side there had been a slither of wood to force the striker plate closer to the door lock; I now used the same technique and this problem was solved.
There still remained another issue to deal with. Whilst repairing the door frame it had been noted that on the hinge side the frame bowed outwards from the caravan so that the top and bottom hinges would be in one plane and the middle two hinges in another. My amateur set-up did not provide me with much scope to investigate the reasons or consequences of this but I could see that the effect would be to help force shut the top and bottom outer corners of the door. Now with everything re-assembled this was indeed the case and to good effect. Clearly though the bow was too great; essentially it was the construction of the dresser forcing the middle of the door frame out but nothing looked amiss, certainly there had been no evidence of distortion to the caravan so perhaps Carlight had intended some bowing. The problem it presented though was that as the stable door was opened, the gap between the upper and lower doors increased on the none hinge side to a maximum with the doors perpendicular to the caravan before closing up again as the doors opened fully against the caravan side. Indeed, the gap opened up so much that a standard barrel bolt would not keep the two doors fastened together; in truth this was an alarming problem.
With the caravan now painted it would be a difficult and unwelcome task to plane some of the bow out of the frame. Also, just how much wood to shave off would be guess work and afterwards there would then be an issue with how the aluminium door frame extrusion would fit; an alteration would have to be made to the dresser’s top corner! Putting some small wedges beneath the top and bottom hinges was one option but this would be unsightly and would prevent the door corners closing as snuggly as they were currently doing. The most expedient solution seemed to be to source a longer barrel bolt! That proved to be a task easier said than done if I wanted to have something discrete but eventually the ideal product was found, a BS-90 stainless steel long barrel bolt from Sugatsune-Kogyo Limited in Henley-on-Thames.
Fully closed everything looks in order; indeed the new hinges and lock assembly, and re-anodised extrusions complement the restoration but mystery still surrounds the door frame construction.