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BuildEnterprise02

David Merriman's Flying Sub project

part 2 page 1

METHODOLOGY

A vital ingredient to a well built model, be it assembled from a kit or scratch-built, is the establishment, before the first tool is raised in anger, of a carefully sequenced set of steps that will assure the best possible results employing the least amount of effort, time, and materials. A 'methodology' is formulated – the assembly/building plan. The establishment of a rational series of constructions steps. The project is divided into sub-assemblies.

I have found it useful to establish a mind-set in the shop, where I have become accustomed to regarding each sub-assembly as a model project onto itself – other than periodic checking that a sub-assembly will integrate correctly with the other components - each is worked with the exactness and TLC I would lavish on a finished display piece. This practice insures that there are no 'weak sister' elements. Once everything is put together the display is as perfect (or flawed) as the individual components that make it up.

My build-up of the FS-1 kit tasked me with quite a bit of sub-assembly master scratch building as well as eventual tool making and part casting. I settled on dividing the job into six major tasks: The hull, the kit itself, needed serious corrective contour work; the hemispherical domes atop and on the bottom of the hull, these and the many gussets that boarder them, had to be made; the forward bulkhead detail pieces, the intake grills, searchlight guards, and windows, all had to be scratch-built; the after bulkhead detail pieces, the access door, corrugated panels and propulsion nozzles, more scratch-building; the upper and lower access hatches, each practical hatch comprising many pieces, all scratch-built; and the interior water tight cylinders (WTC's), pump-jets, and equipment foundations. Each of these sub-assemblies has a worked out methodology which established which type material to employ, how these substrates would be worked by machine or hand, how the shaped pieces would be finished. If a practical item, how it will work. And, finally, how these masters would be employed to create tools (molds), and how and from what material the model pieces would be cast.

I'll take each sub-assembly methodology and accomplishments through to completion as this article unfolds.

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SKETCH OF HATCH PART BREAKDOWN

Before fabricating a complicated sub-assembly like the FS-1 hatch master(s) I first sketch out how the items that comprise the sub-assembly look like and how each integrates into the whole – a breakdown. From the breakdown sketch I formulate a construction methodology: what specific items will be made from what material and what fabrication techniques will be employed to give them shape. Since I want multiple pieces I build the parts to serve as masters. From these masters rubber tools were made and in those were cast the needed parts from metal or resin.

A 'model kit' of an FS-1 access hatch. It comprises eight pieces: A cast resin hatch, cast metal hatch hand-wheel, cast metal hinge support arm, cast metal ratchet wheels, cast metal split bearing supports, and a length of brass tube. I have not yet formed the hatch-return spring from wound soft wire. The entire hatch assembly is seen here test fit within the well atop a cast resin hemispherical hull dome with integral support gussets.

My FS-1 model would not have been possible without the availability of the fine Rick Teskey 1/18th kit. Very simple to assemble, this basic hull kit comprises only a top and bottom half, the forward and after vertical bulkheads being an integral part of the lower hull half. Here you see the raw hull after I had opened up the big circular hole atop the hull (a like one is punched out in the lower hull as well) and test fit the masters I made representing the upper hemispherical dome of the upper pressure hull.

Inset within the hemisphere is a well within which are located cast resin and metal access hatch parts. Rick's fiberglass kit has some problems with the accuracy and symmetry of the forward and after bulkhead positive and negative relief details – but these problems were eventually ironed out after some research and careful work. This isn't your Mama's easy kit-build! Great things require great effort.

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©1997-2006 Stephen J. Iverson. Other material copyright of original owner. No material (images or text) may be reproduced without permission of Stephen Iverson and original copyright owner. Additional copyright and legal information

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