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Tunnel portal

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Creation quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

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  • 3 likes
  • 92 downloads
  • 1 collection

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  • Tunnel_portal_single.stl

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3D model size X 105 Γ— Y 112 Γ— Z 39 mm
Publication date 2022-12-01 at 12:32
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Published to Thingiverse on: 2020-12-08 at 12:27
Design number 943768

3D printer file info

3D model description

Hi everyone. I've returned to my old time hobby and found a great synergy between H0 railway modelling and 3D printing. Recently I have started to build a layout. I could not find a tunnel portal, that suits my needs. So I have decided to make my own.
Portal walls are covered by large stones. This is a single track version, sized to be used with Roco Geoline track system. Hight is enough to let electric loco to pass through with open pantograph.
Model has a stand and tunnel walls going 3 cm inside. No support is required. However, concrete beam at the top sticks out about 2 mm from the wall. My printer handled that well. Only few dropped strings, which I cleaned up.
Alternatively use support.
Later I will add dual track portal as well as portal with a brick walls.

Printer settings are unique for each printer and filament.
I have printed it with ABS.
My settings are:

3 perimeters, 3 bottom and 3 top layers
50% infill
25 mm/s speed
240 C extruder
100 C bed (PEI sheet)

Enjoy!

3D printing settings

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