28 cm SKL/40 (E) Eisenbahngeschütz Bruno 3D printed

[EPOCH3]

Hi - for anyone interested here are a few statistics related to the 3D printer consumables used for wagon #4.
Total part count: 54 parts
Total Resin used: 80.78 ml (build parts only with no supports).
Approx cost for materials: $12.04

Note: the above numbers do not include supports which can vary quite a bit as it depends on specific part and it orientation etc.
A worst case estimate is that supports would add something like 25% to 50% to the materials used (and therefore cost).

[WEISWEILER]

Amazing!

Maybe I missed something but could you tell me how you model/design the kit? How does it work from sketch to actual print?

Or is the software available ready for print?

[EPOCH3]

Hi - all my models start with a 3D software model that I design from scratch. Biggest part of any project is finding accurate information and drawings with dimensions to work from. If you look through some of my other posts on the K3 and M1 projects, I explain a little about the process and software tools/programs/printers used to build the models.

Happy Modeling

[WEISWEILER]

A 3D software model designed from scratch. That sounds impressive.

If you'd make a thread about this process i'd be glad to follow it.

Tnx and keep up the great work.

/W

[EPOCH3]

Here are a couple more pics of wagon #4 (with the machine nest enclosure) and wagon #3 (without the nest).
I decided to do the roof of both just using evergreen plastic (much less hassle than trying to 3D print a flat sheet).
I believe wagons #3 and #4 were both modified G "Kassell" Gedeckter Güterwagens (15t, 4.5m wheel base).

Regards

[EPOCH3]

Here are a couple more pics of wagon #4 (with the machine nest enclosure) and wagon #3 (without the nest).
I decided to do the roof of both just using evergreen plastic (much less hassle than trying to 3D print a flat sheet).
I believe wagons #3 and #4 were both modified G "Kassell" Gedeckter Güterwagens (15t, 4.5m wheel base).

Regards

[Roelie]

Hello Greg,
Outstanding explanation! I, as you may know am building the Bruno too but the WW2 variant. Since you have quite extensive knowledge on this beast, maybe you know how the brake system worked. From the markings in the different photos it becomes clear that the trucks did not have the druckluftbremse (the white square on the front and back of the frame). Digging further it seems it only used a luftdruckdurchleitung, just a pressure hose, do you have any knowledge on that?

[EPOCH3]

Hi - Sorry, the airbrakes on the old WWI Brunos were a post WWI modification and installed by the Belgians in between wars so I don't know exactly what type and/or how they were implemented. The air brakes on the newer WWII Brunos were presumably of more modern standards so they were probably at least a bit different. I'll keep an eye out for any related details I might come across.

The later Bruno designs used a standard implementation of the Hildebrand Knorr HiKp design.

Regards

[Roelie]

Thank you for the swift reply!

[EPOCH3]

As mentioned, I had the opportunity to work with Billie Jean Debekker at Panzer Concepts to turn my 3D model of Bruno into a kit. Several modelers have already finished their builds and I thought I would share a few pictures of their beautiful models (shared with permission of builder). Regards