Thanks Aaron and Hugh.
Got a little more done tonight, and decided to see how the vac-formed canopy will work out, before moving on to work on the engines.
PIC 1. This is the diagram from the 'Squadron' vac-form canopy set, which shows where the kit fuselage needs to be cut in order to obtain the correct fit. Had I been aware of this, and obtained the canopy before commencing work on the kit, I would have been able to make these cuts without problem, but it would be extremely tricky, and could possibly lead to damage of the internal parts, if attempted at this stage. Therefore, after checking potential problem areas around the cockpit of the model, I decided to cut the canopy from the moulding around the lines of the edge framing, and then trim or fill areas on the fuselage as required.
PIC 2. The canopy was first carefully cut away from the rest of the mouldings then, with a new blade in the scalpel, it was removed from the surrounding material. To do this, do not attempt to make immediate cuts, as there is a very real risk of ruining the canopy by splitting the acetate, or slipping and cutting through the wrong area. Instead, very carefully score along the cut lines repeatedly, following one axis at a time, until the blade cuts through the material. Repeat this for each section, until the part comes free from the sheet. This will ensure that the part is removed cleanly, and with only a little sanding required in order to clean up the cut edges. Do not be tempted to rush, be patient and take it steady, one section at a time, and be prepared for a relatively lengthy operation - this particular canopy took around one hour to cut out.
PIC 3. With the part now removed, it can be test-fitted before carefully and gently sanding the edges to eliminate any burrs or irregularities.
PICS 4 and 5. The canopy has been loosely placed in position over the cockpit to check overall fit. This shows that a little trimming of the fuselage will be required at the front of the cockpit on the port side, whilst on the starboard side, a gap will need to be filled at the rear of the cockpit section.
The trimming can be done with the aid of a razor saw, then carefully sanded, but the gap will involve slightly more work.
The fuselage wall will first be sanded slightly to straighten the line, then a piece of plastic card will be cemented in place and, when fully set, filled and sanded at the joint as necessary, and the interior face of the 'plug' painted in the cockpit colour. The canopy will be test-fitted regularly during this process, to ensure the trimming and plastic 'plug' are properly aligned with the canopy edges to provide the best possible fit. When satisfied that the canopy will fit, and can be attached securely, the modified area will be polished and then primed to cover the joints.
As the canopy itself is thin, and will probably be secured mainly with Micro 'Kristal Klear' to avoid the possibility of fogging if CA glue is used, it will be fitted after painting the model, the joints sealed with 'Kristal Klear' and then re-touched with the appropriate colour. This will eliminate the risk of the canopy becoming detached when removing the masks after painting. The canopy frames will be done by adding pre-painted strips of tape, before fitting it to the model, as paint itself, if applied directly to the transparent plastic, tends not to cover or adhere very well on such small, narrow areas.
PIC 6. Comparison with the original kit canopy (top) and the vac-formed item show that this extra work should be well worth the effort and, given that the new canopy fits well, should make a tremendous difference to the overall appearance of the finished model.
PIC 7. Moving on to the engines, the first requirement is to improve the eventual appearance of the gills on the rear of each cowling.
On the right is a standard kit part, with a modified item on the left. The inner faces have been pared down and then filed in order to thin them out, and the fine, raised lines of each cowl flap have been sanded off, although these aren't visible in this photo. The lines for each flap will be engraved and, where required, partly sawn through with a fine-bladed razor saw, to present a more realistic appearance.
PIC 8. An example of the unmodified kit part.
PIC 9. And how the same area looks after modification.
That's all for now, but I hope to post another up-date sometime tomorrow. I hope the description of the treatment of the vac-formed canopy has proved useful to some, and that the rest is interesting to others, and thanks once again for your kind comments.
I'd particularly like to thank Mike Harrison for the information he has recently supplied concerning his Uncle's final operation, a summary of which I will post here soon, and for help in confirming the fitting of certain equipment in 76 Squadron's aircraft during the period in question, notably the fitting and use of the 'Monica' tail-warning radar, and the bomb load for the raid on Karlsruhe in April 1944.