model kits Got both versions of the TECHING DM121 turbofan – 3D printed vs metal. Which one would you keep?

[Potaka]

Hey everyone,
I recently got my hands on two versions of the TECHING DM121 1:12 cutaway turbofan engine – one 3D printed, and one full metal. I’ve built both, played around with them a bit, and also took some photos and short clips to compare. Thought I’d share my experience and hear what you guys think – if it were you, which one would you pick?

  (3D printed Version)

  (Metal Version)

The 3D printed version is really light and easy to carry around, which makes it perfect if you want to take it to a club or classroom demo. It’s also more forgiving during assembly – small misalignments are easy to fix with some sanding. It runs quietly, too, which is nice if you’re showing it off to people without scaring them with mechanical noise. There’s also lots of potential for painting or customizing it afterward, so it’s fun to experiment with.

The metal version, on the other hand, feels super solid in hand. Once it’s fully assembled, it really looks like a proper engine on your shelf. The edges are sharp, the shine under the light is beautiful, and the mechanical sound when it runs is far more immersive. Honestly, for what you get, the metal version isn’t even that expensive – I was pleasantly surprised it doesn’t cost a lot more than the 3D printed one, considering how premium it feels. It’s definitely the type of kit you’d want to keep in a collection or display long term.

 

For maintenance, the printed version benefits from some sanding, primer, and paint to get a nice finish, while the metal one mostly just needs occasional wiping and a bit of lubricant on the gears or shafts. In terms of budget and purpose, the 3D printed kit is more affordable and great if you want to tinker with it or bring it to a demo, while the metal version feels like the “final form” you’d proudly put on display.

Now I’m torn between the two. The metal one looks amazing on a shelf, but the 3D printed one is fun to play with and much easier to carry around. If you could only keep one, which would you go for? Do you care more about the weight and realism, or the lighter, more customizable nature of the printed kit? Also, if anyone has tips for sanding or painting the 3D printed parts, or tricks for maintaining the metal version, I’d love to hear them. And if you have any ideas on the DM121, like adding lights, custom paint jobs, or stands, please don‘t hesitate to tell me.

Edited Friday at 10:23 AM by Potaka