A Modeller’s Challenges — When the Model Kit Fights Back

LaurelB7

’72-‘77 Nissan Laurel 2000SGX (Hasegawa) – excellent quality

Sometimes building a model can be more challenging than you expect. There’s always the skill needed to assemble the parts correctly; to paint things neatly and in the appropriate colours, to avoid getting glue smears on the finish – but sometimes the manufacturers make it a bit more difficult, with the issue of Quality.

As a car enthusiast, it’s interesting how some car manufacturers periodically rediscover quality, trumpet about how Quality is Job #1 or whatever this year’s slogan is, then progressively de-emphasise it and bean-count it away until their reputation suffers. Rinse and repeat. Other manufacturers never make a big song-and dance about it, but deliver it consistently. It’s an attitude thing; do they care about the customer’s experience or just want his or her money? It’s the same in scale.

Quality issues with models are usually down to features inherent in the manufacturing process, moulding defects, or packing defects. Some you can fix yourself; I’ll start with those. I haven’t taken photos of all of these; I’ll just describe them and show a model that was afflicted before I fixed it.

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Auburn Speedster (Pyro) – From a fifties tool, fifties quality

It would be easy to pick on older-tool kits I’ve built, like the old Pyro Auburn Speedster as examples of poor quality – but that would be an unfair comparison. This was state of the art seventy years ago. Any field of human endeavour advances over seventy years. Or should.

Mould lines

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AMT ’55 Chevy – An exposed mould line, from headlamp to fender bottom (both sides).

These aren’t exactly a fault. They’re pretty much inherent in the manufacturing process, but you have to deal with them. They’re often hard to see. Firstly, because they’re so fine (almost hair-thin), but also because manufacturers tend to hide them (which is good) on the edges of the body, fender tops, roof edges or in pre-existing body lines.  I tried for a photo of these ’hidden’ ones, but they really don’t show up well. You might need a coat of primer on the body for them to be obvious. That’s when you need to rein in your enthusiasm to get on with it, and take a careful look instead.

Mould lines matter most on the body and, to a lesser degree, the interior. That’s what’s going to show when the model is built. Personally, I don’t bother about them on engine and chassis components unless they interfere with parts fitting together properly. It’s a matter of diminishing returns: ask yourself whether it is worth the effort of fixing them? If you were building for a judged competition, then fine, hunt down and destroy remove every single one. Judges look for flaws. They have to. General spectators won’t be looking as critically. And a visitor who sees a model in your house will probably be blown away that you built it, even with flaws.

Fixing is a matter of sanding, perhaps filing first if they’re bad. If you don’t, they can show through the paint, and you’ll end up wishing you’d spent a bit more time checking things over first. Been there, done that…..

Sink marks

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Sink marks (filled) on an AMT ’69 Corvair; mounting tabs on the other side.

These are also inherent in the manufacturing. They are small depressions or dimples in the surface of a part. They occur when the plastic cools unevenly after being taken from the mould, and are most often found in thicker sections of parts, e.g. on the outside of the body where there is a rib on the inside.

These need filling with putty (modelling putty or car body goo), then fine sanding and priming. Comparatively easy to fix.

Mould mismatch

I couldn’t find an example to photograph – I’m glad. This one is a real curse. It could be avoided if the manufacturer cared.

I’m not sure how it is physically possible, but sometimes on an older kit you’ll find, say, a 1mm ‘step’ where two sides of the mould come together. 1mm isn’t much, you say? Just shy of 40 thou? Well, remember we’re talking about 1/25 scale. Would you accept something misaligned by an inch on a real car? That’s the scale of the problem here.

Once again, on engine and chassis components I’d let it go unless it compromises parts fit. Fixing a mismatch on a coil spring is no fun! But for the body – no way. One particular kit will always come to mind here, a Rolls-Royce Silver Cloud II, by Minicraft. They’re a small company that seems to specialise in re-running old tools; bringing old kits back from the dead, you might say. This has its problems, stemming from old worn-out moulds.

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Rolls-Royce Silver Cloud II, after repairs.

This kit dates back to about 1960, which means the tooling is about 66 years old. I think it was originally a Hubley kit, and appeared in a Revell box for a while. Anyway, the one I built had a 3mm mould mismatch on one front fender, resulting in a 3mm ‘step’ on what should have been a smooth surface. The plastic Minicraft had used was so hard I had to resort to a wood rasp to knock it down to an approximate shape, then progressively file and finally sand until I had it the shape it was supposed to have been.

I have only once in sixty years found a mould mismatch as bad as that. Why didn’t I complain? Simple: I only paid $10.

Short Shots

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AMT ’60 Chevy pickup – area ahead of front wheel was AWOL.

These should never get out of the factory, but should be caught by QC, so you won’t often find one. In sixty years I’ve come across five. They occur when there is not enough styrene injected into the mould. Areas furthest from the injection point don’t receive any plastic, so that area of the part is missing when it’s pulled from the mould. I have found these down the bottom of fenders but they can occur on any group of parts. A small short shot on a body is obvious, and can be fixed by an experienced modeller, but it shouldn’t have to be. If a short shot occurs on a tree of small parts, some entire parts could be missing, and you probably won’t notice until you go looking for that part. It’s a hassle to have to contact the manufacturer for a replacement because of their lack of QC; even more so when they’re in another country.

Warpage

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’76 Camaro –had to reshape the front fender with hot water.

Oh boy, this one’s common enough to be a pet hate. I’m told this is caused by taking the parts from the mould before they’re sufficiently cooled. Some larger parts, like car and truck chassis, seem especially prone to warpage, probably because of their shape more than their size.

Sometimes it’s spectacular, like on an AMT ’40 Willys I bought back in the seventies. The entire rear of the body, trunk and rear fenders looked as though the car had been hit in the rear. That was not the effect I was aiming for. They sent me a replacement body (slow boat from the USA), and I wound up fitting the old body to a junk chassis as a speedway car. (No picture, sorry.)

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‘72 Ford pickup (Moebius) – chassis is just a bit warped.

Other times it’s not noticeable until you realise your car has a wheel in the air.  By the time you’ve built up the chassis to that stage, it’s usually not feasible to disassemble it to straighten the chassis, (styrene glue is pretty much for keeps!) but careful use of a heat gun can soften the plastic enough to straighten it.

Accuracy

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Honda N360 (Hasegawa) – The most accurate I’d built until then.

This can be very subjective; what bothers one person may pass totally unnoticed by another. But ask yourself whether the overall shape of the body looks like the real thing? Does it look slightly off somehow? Can you figure out where the problem lies? Is it something you can fix? Or will it do?

People here have often commented on my models that the ones of smaller cars somehow look more realistic than the larger ones. I don’t think it’s just that (most of) the Japanese manufacturers take more care. There’s more to it than that.

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’72-’77 Nissan Skyline 2000GTX (Hasegawa) – The perfect kit?

I’m noticing more faults nowadays with more computerisation. The old way of photographing and measuring everything must have been an incredible amount of work, but could produce really excellent results. Admittedly there’s always a learning curve with new technology, but when the end result – the kit in the store – is visibly inferior to what that company made before, then it seems to me that that particular technology isn’t ready to be deployed just yet. Do a test shot and give it a serious eyeball check – does it look right? Is it off somewhere? In my case I’d ask myself ‘Is it as accurate as a Tamiya or Hasegawa kit?’ They can do it.

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’70 Torino (Revell) – tool from 2000, no obvious faults.

For example, Revell seems to have a problem with window mouldings. Their ‘76 Gran Torino, out of the box, sports a side window moulding that would be a scale two-inch high strip of chrome. Now I’m not familiar with these Torinos, but that can’t be right. A look at photos on the net confirms Revell got it wrong. It throws off the look of the entire roof, and makes it seem too low. I’ve seen this on some other kits of theirs too. They never used to have this problem, as a look at their ’70 Torino proves.

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’76 Gran Torino (Revell) – tool from 2017, side window fault (fixed here)

I sliced the moulding off mine, and replaced it with a strip of chrome foil. That’s maybe going too far. The alternative would be to use a strip of styrene (available from your hobby shop) to replicate a moulding of a more correct thickness; perhaps  Evergreen #102, that’s 10 thou x 40 for a quarter-inch high by an inch wide. Want to replicate a wider moulding, say a quarter inch by an inch and a half? That’ll be 0.010 x 0.060. Look for #103. Their catalog is online.

There is an amazing range of shapes and sizes of styrene available – strips, sheets, patterned sheets, rods, tubes, channels, I-beams and more. Much of which I could never imagine using for anything, but it’s available.

Is Everything in the Box?

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Lamborghini Miura – no longer a three-wheeler

Surprisingly (or not) sometimes parts can be missing. There’ll be a contact number, address, or email to get in touch with the manufacturer to report things like this. Okay, it’s their bad, but be polite. I’ve only once had to contact a Japanese manufacturer about a missing part (about fifty years ago), I think it was Nitto. This Miura was missing a wheel. It’s very distinctive; I had nothing like it. I began by apologising for not being able to write to them in their language, and I still remember how incredibly polite and self-effacing they were about it. I got my part all right – airmail.

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’49 Ford coupe, with the right parts.

The funniest ‘missing parts’ story I have occurred in the 1970s. It was the time I bought an AMT 1949 Ford coupe kit, and found the chrome parts tree was for their 1949 Mercury kit! As you can imagine, there was no way most of the Merc chrome would fit the Ford; the bodies were entirely different back then. I wrote to AMT, admitting that while I could maybe build a one-of-a-kind custom, that wasn’t what I had in mind. Rather than the correct parts tree, they sent me a whole replacement kit.

Uninspiring box art, but the contents were welcome.

Sometimes you win!