I can help you there

well I would be able to I hope

-----------------------------------edited
Anyway...some options.
H&F come in 2", 4", 5.5" , 8", and 14" inch lengths...This reflects our work in large scale Railways and Architectural models to the tiny 1/72nd aircraft and micro ship construction.
The HOLD & FOLD has evolved from a unique development into the range of tools it is today.
It has only done this as we have received 100s of design change ideas over the years, many implemented to the undying frustration of the factories both in the UK and the USA.....we can't resist Darwin:) and modellers, even if we at times have a slightly Luddite attitude:).
All H&Fs' CAN fold ANY fold you can give it, they fold THIN brass as well as THICK brass. Long parts, wide parts and tiny parts.
ALL edges, inside, outside top and the base unit are available for folding. ALL allow overfolds of 180deg as well.
The H&F will also do the same job on all thickness of brass (very thin in your ship masts), foil as well. (It CAN do this as there is no need for hinges at each end...which BTW, removing them was the original "eureka moment", so don't ask me why we are going back now

)
This is the point of the "free-head" design, it removes the hinges that limmit the use of the tool so much
For very long parts (as you can reposition so well and ALL the sides of the tool are open with no hinge or guide pins are in the way.) you can shuffle the part along and do 1/4 folds till completed (if your tool is smaller than the fold you need)
To fold along the WHOLE lenght of the tool, use the outside edge and a hard surface, easy, quick and a better result as the pressure is even. You do not struggle with blades and you can apply more pressure as you are now using your wrists and not your fingers.
You can fold up and over the tool head or down against the base plate to get a true 90deg fold.
Use this method when folding thick brass as well, its just easier

When folding rails for flight decks, pass the part through the tool (again there is nothing to block your larger parts such as guide pins ect...)
For the large (and very thin) masts, well, the micro edges and the sheer quality of fit of the head unit to the base allow you to fold even the most complicated piece of brass the ship guys can throw at you.

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For Plastic card, use a soldering iron and after folding run the iron quickly down the inside edge to "seal" the fold, then use Mek or similar.
So, with size you takes your choice, but if you need a tool to do everything on the fret, and better than ANY other tool then the H&F is the way to go. For yo the 5.5 ich 5-SPEED would be just the job with its 59 folding surfaces
Hope it help you choose
Alasdair

PS
If I may note on comments above.
As for the H&F not being a break...well it is, its' just that it is reversed in its operation.
As with ALL good breaks it holds the metal, how you move that metal has no conaquence at all in the fold quality as long as the correct pressure is applied.
Also important is the distance betweed the "blade" and the head/bed. This has to be set for brass thickness if you have a standard break design. This is NOT the case with the "free-head" design as the "blade" is tremoved from the process.
As for "ease of fold", the longer the lever the better, "rolling" the tool on a hard surface allows a larger leaver as it is held as a whole unit in the hand, thus the fold is easier and tighter than using a blade type lever. I IS true that iIF you use a [box cutter type] blade for the large parts then this is more "problematic" but, why use the incorrect method ??
Blades are there to help folding small and awakward parts, parts that require no pressure but the highest level of control ...eg your finger tips
