Schild Gymnasium Gerolstein (SMG)

This replica is made from a photograph of the original plaque from the Seventies, last century.

The original was removed from a friend of mine in 1973 from the SMG entrance stair wall. Now after he passed away in 2025 his widow gave it to another friend of mine, who was a class-mate of the "thief".

As I also was in that school and made my "Abitur" 51 years ago (1975) I thought that somebody could print his own plaque, so to avoid loosing original plaques again.

I made two versions:

A) A screw version with ø5mm holes for screws.

B) A magnet version for inserting ø10x3mm Neodym magnets.

Printing:

The plaque is fitting a 254x254mm build plate. I choose PLA. Pearlwhite (Euroharry) for more brilliance for the first white layer, next Yellow (Elegoo), Red (Prusament) and Black (Geeetech). AFter finishing White for Layer #1 I ex-changed Pearlwhite to White (Geeetech).

If you have a Bambu printer that fits the stl-size you may be able to use the attached 3mf-Files. Otherwise you need to re-arrange and slice the plaque yourself. 

Following my recommendations (that is what I did):

• Draw 4 stl's on your build plate (White-Yellow-Red-Black). Use this also as color sequence of first layer, as it may avoid some color bleeding.

• Put the place facing down to the build plate, so the colors are printed first!

• I adjusted 2 wall-lines, 4 bottom and 3 top layers. LayerHeight = 0.2mm

• Colors Yellow, Red and Black are only 0.6mm thick, adquate 3 layers!

• Use Hilbert curve for bottom layer. It takes some time longer, but squeezes the filament right into the valleys of a textured plate. You might not see ugly lines.

• Click on the plaque and right mouse load the file SMG1 or 2-Modifier.STL. use this lyaer just as modifier! and assign it 1 wall line instead of 2 or 3, this gives you much better results for details.

• I used org. textured PLA-PETG-build plate with 60°C bed temperature, 220°C filament temperature.

• Slow down the accelerations and speeds to about 140-180mm/s max, your result and your printer will be thankful!

• I used 3D-Lac on the build plate and then IO was ready to print. 

• Let it cool down enough, in order not to destroy some details of your plaque.

In case you want to resize the plaque, bear in mind that the thickness should be considered to fit a new size. What I mean is that when you shrink the stls to 50% overall, then the color layers shrink to 0.3mm also, then you need to pay attention to LH. Or maybe shrink only X and Y and let Z untouched. This will work seamlessly.

There is nothing  to say, and I wish you a happy school time, much success!

Happy printing!

If you need some more interesting solutions to any kind of problem solved explore my other Printables: https://www.printables.com/de/@Tritschi