Metal scale model cars
Metal scale model cars
by Peter Radcliffe © 2008 Modeler Site
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Origin of the scale
The origins of 1/43 scale are the early dinky toys, which were originally produced as accessories for O gauge model railways which were popular at the time, this was a real “bastardisation” of a scale being 7 mm to 1 foot!
One of the problems that has long faced model makers and collectors is that the range of subjects has always been limited. Diecast and plastic kit manufactures are in the main large organisations that produce products at very reasonable prices. To do so they have to be subjects, which have a mass appeal otherwise sales, would not recover the expenses of masters and pattern making etc. Thus many of the subjects that appeal to enthusiasts are not modelled and thus the only option was to scratch build or “chop” an existing model.
The earliest white metal kits grew out of this desire for models not produced by the major manufactures. I can remember reading articles by Barry Lester in Model Boats and Cars magazine over forty years ago about “Chopping Miniatures”. Barry went on to establish Auto Replicas, which continued until very recently. Many of the early kits were very crude and in many cases it might have been easier to start with a lump of metal however the early Auto Replicas were of a very high standard for the day and soon the rest had to catch up to survive. The early manufactures were first and foremost enthusiasts who worked from the back shed or kitchen table producing a few kits of each model for a small appreciative clientele and this is still the case today. One of my suppliers in Italy has neither Phone nor Fax in his workshop, Fax’s are sent to a tobacconist where he buys tobacco once a week!
The title of this piece perhaps sounds a little warning, you have decided after reading all the articles to have a go yourself. First the warnings in the title, you will probably use your credit card because, you will almost certainly be buying your kit by mail order and these kits are more expensive than the average plastic kit. The fools rush in, your heart may rule your head, you are probably buying something which you have not seen the box let alone the contents from someone you do not know and who does not know you or your experience and skill level and worse still may not care!
Sadly all to often I have had panic telephone calls or e-mails from people who have bought a kit which when it arrived has left them scratching their heads wondering where to start.
Often there is a disapproving other half saying I told you so and the place of purchase having made the sale is no longer interested. All to often this first purchase turns out to be say a Tameo modern F1 or worse still a superkit, nothing at all wrong with the kits but not for a first timer.
The majority of people buying a first kit have built plastic kits at some time in their lives but resin and white metal involve some basic changes in practice. For a start, plastic is soft, melts and is not awfully forgiving. Resin and metal are stable and very forgiving, they do not melt under the influence of paint or glue and are resistant to most solvents. Hey this sounds good but, if it does not melt how do I glue it together, if it is resistant to solvents what paints stick to it and help I have just seen all those tiny metal photo-etch bits, how do I hold them, fix them, paint them, oh help me please!
I bought my first plastic kit as a small boy, I bought it at a shop where the shopkeeper served me and saw my age and guessed from my limited financial means that this was probably the first or almost first purchase. He ensured it was simple, and cheap enough for me to have all the glue and paint I might need. Only later did I advance to the high detail expensive kits. The majority of my customers buy with a credit card and by e-mail, unless they tell me I have no idea whether they have built a similar kit before. We try to look for signs and often ask if they have experience but if you do not tell the retailer it is very difficult to prevent that sick panic you will almost certainly feel when you see all those little bits.
So you have read so far so what do you buy for that first kit and why? Consider first for a few moments these factors
It is probably smaller than any kit you have built before.
It is made from materials you have never used before.
You will be painting small parts with compound curves and deep holes and you will be applying decals to these same complex often deeply double curvature surfaces. So as when I bought my first simple plastic kit keep it simple, as a retailer I would far rather a first time customer bought a very simple kit and came back to me and said that was too easy what next, than they bought a Tameo superkit, ended up throwing it against the wall and questioning my parenthood. The first will probably be hooked and a regular customer and some time down the line build several Tameo kits, the second will probably not come back and miss out on a wonderful hobby.
I have chosen two kits from my collection for this article to demonstrate the basic thoughts that should go into your first choice. Both are Le Mans sportscars from the fifties early sixties. The Gordini is a resin kit from Provence Moulage that is now deleted but it is typical of the cars of the period. The Panhard is a painted kit from JPS, painted applies to the main body colour only but if the thought of painting worries you then this is a good start. Being sportscars there is no exposed complicated suspension to build, they are also both simple shapes with no awkward areas to spray. There are a limited number of simple decals to apply to areas which are flat or have a single curvature. There are very few small photo-etch pieces to learn to handle. There is a full photo build up of each subject with captions on the pictures taking you through each stage. Below are a few basic instructions to go alongside these pictures and we hope that you will now be encouraged to use your credit card with care!
Basic instructions for building resin or white metal kits
Many people are frightened by the thought of resin or white metal kits and yet they will happily build plastic kits. In general resin/white metal kits are less problems because. You can strip the paint and start again with cellulose thinners don’t leave it soaking too long You bond not weld with the adhesive so most parts will separate without damage if you use the right adhesives. In most cases you can undo your mistakes.
Very few tools are needed, the following are useful; needle files, a sharp scalpel or modelling knife, 1:1200 wet and dry paper, a pair of small sharp scissors, a pair of tweezers, some cocktail sticks and a selection of small paint brushes.
It is important that care and common-sense are used when handling resin, white metal, paint and adhesives. Care should be taken to avoid inhaling the dust particles from resin, white metal and paint. Always work in a clean dust free area and clean up after dusty tasks. Where possible sand
resin and white metal wet and wash hands afterwards. AVOID SMOKING when resin dust is in the air. In ideal circumstance an extraction system should be used for all “dusty” processes.
I use car touch up spray cans for my models, I like the HALFORDS range, it is important to use the Primer for plastic on resin kits. A selection of cans of model paint for small parts, Humbrol or similar.
For glue I use; 5minute epoxy, Dunlop Thixofix, clear PVA (WOODWORK GLUE) and super glue. Super glue must be used with extreme care as it can damage paintwork and fingers.
Open the box carefully, as there may be small pieces which have come out of the packaging in the post. Some times sprues of photoetche parts are selotaped to the inside of the box lid. Identify all the parts, I like to put all but the main parts into a separate sealable container until they are needed, study the instructions which may consist of little more than a picture. If any parts are missing please contact your retailer immediately as the model run is often short and it may be impossible to get replacement parts later.
Clean up any mould lines on the cast resin or metal bits with files and wet &dry paper, check for any voids or other surface porosity, this can be filled with plastic padding type fillers.
When satisfied with part preparation they should be carefully cleaned, With white metal I use very fine wire wool first and then I clean both resin And white metal kits with an old toothbrush and a mixture of washing up liquid and Jiff. Once clean avoid touching surfaces to be painted, I try to hold parts with paper towel.
I find that the resin used by Tenariv and ESDO takes paint much better if it is given a quick wash in cellulose thinner. I use thinners to strip any paint failures, but it must be done quickly, again the old toothbrush is ideal for this.
WORK QUICKLY AND DON’T LEAVE RESIN PARTS TO SOAK
Mount parts to be spray painted on a suitable stand that can be held and rotated while spraying. Ensure parts are completely dry and spray with a thin coat of primer. Check for any surface imperfections, if happy spray a second coat. Allow about 24 hours for primer to dry before spraying topcoat. I use one mist coat followed by one thick coat about 60 seconds later but I have had years
of practice so it may be better to use several thin coats rather than one thick coat allowing time to dry
between each coat. Check for dust before each coat.
When I am happy with the paint finish I like to put the model away for 7 days to allow the paint to harden. I then finish the paint with a gentle polish with a fine cutting polish.
Read more about building a simple painting stand > Here
While sprayed parts are drying the other parts can be trimmed cleaned and hand painted.
Read more about painting > Here
As instructions are often very poor trial fit as many parts as possible before the use of adhesive, Thixofix and PVA take longer to set but you can pull them apart if you have made a
mistake, The “window ” section will often go in one piece, usually from the inside after trimming excess material, repeated trial and error is advised, do not over trim. Generally construction presents few problems as long as it is taken slowly with as many dry fits as possible. Make sure any transfers
for the interior are added before the base plate is fixed.
On many of today’s race car models the transfers are extensive. Again care and patience are vital, try to see where each decal is placed, I try to do one side of the car then leave these to set then do the other side and lastly the upper surfaces, if to much is attempted at once it is easy to displace transfers that are not yet set. With complicated shapes a good decal softener is a great help, I divide up the sheet into small sections and place each section on a damp sponge when I am ready to start that section.
8) Decal softener
I t is a good idea to practice before you start applying decals to your model, most model shops sell either sheets of plain decal or large decals for flying models. Cut up the decals into odd shapes and sizes and the find an old say jam jar, you will find a nice piece of double curvature on the base and often there are numbers and other interesting shapes on the base or lid.
I use a small very soft paintbrush which I reserve for use with decal softener, put a small drop of softener where you want to place the decal and put the decal over the top, the softener will spread between the decal and the surface and the decal will soften and adapt to the surface. If the surface is
very complicated it may be required to brush further softener onto the surface of the decal. It may take several applications and considerable time, it can even be left and continued next day so have patience and don’t be tempted to force the decal as they are very fragile and may split. Decal softener also stops decals lifting with age and can be used to re-adhere old decals.
“How to” photo by photo
|A “Prepainted” kit from JPS saves painting.||Small parts need care handling||Vac Form for windows and light cover||Simple decal sheet|
|A simple unpainted kit from Provence Moulage, note few parts and simple shape||Body is mainly flat surfaces.||Simple chassis with little to detail paint.||Again simple decal scheme which does not have to adapt to complex curves.|
|Very basic instructions typical of many early kits.||Remove flash with sharp modeling knife.||Blow holes may be found on lower surfaces of resin models.||Open up de blow holes so them are easier to fill.|
|Filler for blow holes from your local auto parts dealer.||Mix two parts well||A cocktail stick is a simple and disposable applicator.||These few simple tool are all you will require to prepare your model|
|Simple paint stand from scrap bits.
Parts to be painted are attached with bluetack
|File away casting sprues and flash from parts before painting.||Dust, the greatest enemy to a good finish. Resin dust is toxic and should be kept to a minimum.||Hoover it away regularly|
|When set trim excess away with straight blade.||Trim away thin layers, blade must be very sharp||Excess has been trimmed away in thin layers
Final sanding is kept to minimum and thus the shape of body will not be sanded away and changed
|Ready to finish with 1200 grit wet n dry paper|
|Clean up.||Blow hole is smoothly merged into body shape||Adjustable paint stand see gadgets and gizmos for details of construction||Paint stand attaches to chassis mounting
Holes in body
|Body screwed to stand ready for washing before painting. It is now hands free and free from finger grease contamination.||Period wire wheels were seldom chrome. The “knock off” may come off without damage or mask it with a little bluetack.||Clean with washing up liquid and jiff with an old toothbrush.||Washing up liquid removes the grease while jiff slightly “scuffs” the surface to give a key for the paint.|
|Scrub well with plenty of soap mix and warm water. Ensure to get into panel lines and other depressions.||Do not forget under wheel arches||Once cleaned water will cover the body evenly without “dry” patches. Water will run away from any greasy areas.||A warm spot to dry the model before painting, in this case the kitchen range.|
|Plastic primer warmed in baby bottle warmer.||Simple extractor system for paint fumes and overspray dust. Keeps the house free from paint smells and the wife and family happy!!||First coat of primer is a very thin mist coat, the resin colour can still be seen.|
|Mist coat allowed to dry one minute, then a flood coat is applied, the mist coat created an initial “bond” and allows one to see defects in the surface preparation.
The flood coat adheres without fisheye as the mist coat is still “tacky”
|Panhard chassis ready for flood coat, black resin colour still apparent.||Flood coat creates wet shiny look, should be just short of running. It takes practice.||Flood coat when first applied almost “Drowns” detail but dries and shrinks.|
|Wet look of flood primer coat. Will dry matt.||White primer was used on Gordini as pale blue colour coat will cover better.||The body is painted in the same way as it was primed . One mist coat then a flood coat. This is the finish and no polishing has been done.||The body is given a light polish Finesse-it|
|The base was painted with Humbrol enamels and good quality brushes.||Grips make painting small parts much easier||Research for model of this period is often difficult. Period news film suggests dash is body colour and wheel rim pale blue.||Paint the belts and headlights bases.|
|Matt black under wheel arches gives a feeling of depth to the model and sets off the wire spoke wheels.||Painting black areas can be fairly rough
Polish off over painted areas when dry.
|Excess paint will polish off||Matt black interior where visible|
|After polishing||Excess paint has been polished away.||This was an old kit and the tyres has gone hard. Old tyres often split, they were replaced with a set from some BBR wheels||Look for the mould point and put this on the inside of the rim.|
|Finished wheel and tyre.||Fix one wheel to axle and then try in place and mark length, mark it slightly long and then trim until the complete axle looks “right” when positioned in body.||A needle file can be used to cut the axle and then used to carefully file until the desired length.||Fix second wheel to axle with both mould marks to the inside and in a similar position.|
|After trying the completed axel, it was decided the model sat too high, the axel slots were deepened. Remember to clean up before proceeding.||The axels are glued in place with a little 5 minute epoxy, before it sets check the model looks right and all four wheels are contacting a flat surface. When happy with appearance leave to set.||After axels have set, the base can be screwed in place.||Lights and radiator|
|Radiator is chromed resin, carefully file away sprue with a needle file.||The center of the back of the radiator was cut back at the edges to ensure a good fit in the body.||Contact adhesive has been applied thickly to the screen frame. Leaving it still on the fret makes it easier to handle.||Firmly press screen frame to acetate sheet and clamp between to flat surfaces. The excess glue has squeezed out but leave it for now.|
|After about half an hour the excess glue can be “rolled” away with a cocktail stick.||The contact adhesive between the screen frame and screen has enough “give” to allow the screen to be bent and secured in place with contact adhesive. The contact adhesive will not affect the paint finish and excess can be removed as before.||This was and old deleted kit and the decals were old. Old decals often crack and brake up in water.
Try a single decal first on a wet sponge.
|Only the number on the tail had to be adapted to any great double curvature. Microsol is a softener which will soften and shrink the decal, here the last few wrinkles have yet to conform.|
|Little details make the difference. When the decal is dry carefully run a very sharp blade along the panel line and with a little Microsol adapt the decal into the panel line. After all you may need to open the boot!!|
|“Tack” vac form in place with a couple of drops of PVA. Leave to dry before proceeding.||The window once “tacked in place” can be properly secured in place by running PVA around the screen. Apply the PVA with the point of a cocktail stick.||A pin is usually provided for the gearstick. Turn it down with a Dremel drill
A flat needle file is used to turn the pin against.
|Reduced pin is a more realistic gear lever|
|Panhard interior||Cut decal along panel lines. The door would have opened in the real car!!|
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