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Seems I forgot to include some interior pics. I wanted the interior to have a early 1970s look.

Smash molding is a simple way to mold a sheet of material into a 3D shape. Referring to the picture below, the gray mold was made in the design software and was printed as a part on the 3D printer. it fits up into the body where the interior is, and conforms to its interior shape. I have traced the window shapes with a marker for reference. I use a heat gun (chrome thingy in the picture) to heat a sheet of PETG to form the windows. Next I clamp a piece of PETG in some clamps to hold it and heat it over the heat gun. Watch those fingers - it gets hot! When the PETG sheet is soft and pliable, I 'smash' it over the mold where the window I want to make is. If the PETG gets too hot, it turns white and it's ruined. I make the windshield, side windows, and back window separately. Then cut them out and glue them into the body. In the picture above, the PETG is covered by a protective film and doesn't look clear, but after the film is peeled off, the PETG is VERY clear. The film must be removed before heating. Here I was just demonstrating the process. The PETG sheets are available on Amazon and are 0.015" thick. Hope this process is clear. Thanks for looking in on this project.

Thanks for commenting, everyone. I use the free version of Autodesk Fusion design software. I learned how to use it by watching YouTube videos. The terms of use dictate that I cannot use the software for commercial purposes. When I develop a design, I usually have an idea for only a part of the vehicle, typically based on some design feature of another vehicle. After I get started, I need to 'fill in' the rest of the design and this is usually not based on any particular vehicle.

Hi John. The one car that most influenced the design is the 1968 Dodge Charger, but the front end and the back end design were conceived first. The front end is reminiscent of a De Tomaso Mangusta.

This is the Concept 3, a custom design and 3D print. Named the Concept 3 because it is the third custom design I have done. It is envisioned as a mid sized car with seating for four and an automatic transmission, having a muscle car vibe. Paint is Splash Paints Anniversary Gold with Alclad chrome trim. All parts are original design and 3D printed except the glass, which are smash molded PETG, and the windshield wipers which are PE. Comments are welcome.

Great looking model. Looks like you overcame the decal issues.

Super cool!

Great scratchbuilding there.

A nice collection of Howmets and great work on them. Interesting subjects.

Great subject!

Thanks for the comments, Tommy and Rich. Since this thread has come up to the top again, I'll add a few more builds. Tamiya and Fujimi Alfas: A lot of unused race car numbers were collecting in my decal box, so - 'art car' Porsche 550 Carrera Panamericana Revell Porsche 914 converted into a race car. Gunze Daytona Cobra Tamiya Porsche Carrera GT converted into a 'targa' model - the glass top coupe. The clear top extends across the entire top. I hope you enjoyed the new additions. I added some of the more interesting subjects I have done over the last 30 years. Thanks for looking in! Ken

Very nice model, Rich. I, too, was struck by how visually stunning this car is and built the LeMans version of the Profil24 kit. It is one of my favorite models.

Very nice final result, Dave. The paint looks super smooth on this minimalist car.

Helmut - I see what you mean as the Mistral bears a striking resemblance to the Peugeot, which I had never seen before. Thanks for posting the pic.

Thank you for all the kind comments, everyone. The design of the Mistral is an amalgamation of design features of a number of cars that I worked into this original design. Ken Mouton

This is the second body style for my roadster project, which I have named the 'Mistral', and is a completely original design. This has an Aston Martin engine, which is 1950s technology, and the Blockley tires are a modern design for classic cars. The paint is Splash Paints Azzuro California. The lights are spun aluminum and the trim is Alclad Chrome. Here's both of the body styles, which share the same engine and chassis.

Time for an update. I have painted the body and I am painting on the chrome trim at the moment. Also making the lights on the lathe. I have completed the chassis and wheels. I should be finished with this one soon, so the next posting will likely be in the completed section. Thanks for looking in on this project. It's been a steep climb up the learning curve.

Thanks for all the feedback, everyone. This body style was to give a run through of the entire process of designing, printing, and building out a design. My real intention was to build the second body style I designed for this chassis and engine, shown in this thread: I am using the free version of Fusion 360 for the design and unfortunately, the free version cannot be used for commercial purposes. I am currently painting the chrome trim and making the lights for the second body style. Thanks again for the feedback and have a peek at the second body style.

This is my own design of a classic English style roadster. It's the first model I have completely designed, printed, and built. I have another body style going as a variation, which uses the same engine and chassis. The engine is a Aston Martin DBR1 engine designed by Bill Cunningham and is free to use. I gained a lot of experience using the Fusion software and will be improving my designs as I move forward to other projects. Paints used include MCW, Tamiya, Alclad, Splash, AKI, and a few others. I should have the next body style model done in a couple of weeks. Thanks for looking in on this project.

I have completed this model and will post in the completed section. Thanks to all that left comments and reactions.

Glad to hear the decals are not being an issue. The F40 is my favorite Ferrari. I have built both the Tamiya and Fujimi kits and both had issues with the engine cover fitting properly. According to Scalemates, this is an original Italeri tooling, so there may not be any issues with the engine cover, but I would recommend checking that as soon as possible for needed alterations. Good luck with your build.

Thanks for stopping by, Brian and Chris. This is in 1/24 scale. Little details like the ribs on the fenders and body and the logos make a big difference in the appearance. I now have completed assembly, but I will have to re-shoot the hood clearcoat before calling this done.

It's been a while since the last update in this thread as I am building up two models based on the chassis shown here. I now have the body painted and clearcoated and am working on the last items for assembly. I machined the lights and instrument bezels from aluminum, the front grill is Alclad chrome. I should be finished with this model soon. Thanks for looking in.

Thanks for commenting Bill, Bruce, and Chris. This design does prompt memories of Allards and Alfa Romeos. The design is an amalgamation of design features on these cars. Chris - I am using a Anycubic Photon M5S Pro printer and Anycubic ABS-like resin. I am using 20 micron layer height, which is visible on the printed items. At this layer height, if you prime, paint and clearcoat, the layer lines are mostly filled up and do not show, however, on large surfaces, I do sand them away, which is easy and doesn't take a long time due to the softness of the cured resin. If you use design software, don't hesitate to explore your own ideas.

I started this thread for the second body variation of the roadster project I am working on. The first body is a more or less 'classic' English roadster and there is a build thread in another sub-forum. There doesn't seem to be much interest in it there, so I am branching out into this forum. Both body designs use the same chassis and engine with minor variations. This variation is a more 'sporting' vehicle that could be driven to a track for a race or track day. This variation will use a dual plug Aston Martin DBR-1 engine (the files were developed by Bill Cunningham and are free for use - thanks a bunch, Bill). So these roadster designs have 1930s styling with 1950s technology. Design renderings: I have printed the parts out for both versions and am progressing on both designs. Printed 'B' body - body work in progress. Chassis for 'B' body. Wheels printed. Decided to go with these instead of wire wheels, but either one looks good. Thanks for looking in on this. What do you think about it?