Prusa i3 MK2 Simplify3D Bed Model STL (OpenSCAD)

I have some minor damage on my bed / PEI sheet which I want to avoid. I've been looking into creating my own custom bed model for Simplify3D so I can easily avoid problem areas when laying out pieces to be printed.

I stumbled across ayourk's post on the Prusa forums and have modified his code.

Ayourk's post can be found at: https://shop.prusa3d.com/forum/software-archive--f87/mk2-silk-screen-for-simplify3d-t2101.html

Changes:

• Changed the drill holes to look more like they do on the bed with an outer ring.
• Added a fine grid which shows every 10mm.
• Added a function to import a DXF file to add a graphic of PEI Damage for areas you may want to avoid. (I've included samples of mine for reference)
• Changed the zheight from 2 to 0.1

To install this in simplify 3D:

1. Export your printer profile from within Simplify3D. File > Export FFF Profile
2. Edit the file in a text editor. Change overridePrinterModels to 1 and printerModelsOverride to the name of the stl file without any path.
3. Go to ~/Library/Application Support/Simplify3D/S3D-Software/ and copy the STL of the bed there.
4. Open up Simplify3D and use File > Import FFF Profile
5. In Simplify3D > Preferences on the Visualisation Tab, untick "Include Build Table In Virtual Environment
6. Set the profile to the new one and the bed will show.

Further information : https://forum.simplify3d.com/viewtopic.php?f=8&t=5403

To draw 'PEI damage' on to the model:

1. Take a photo from directly above your bed as square on as possible.
2. Open Autodesk Fusion360. Insert > Insert Mesh - choose the bed STL
3. **Insert > Attach Canvas > ** pick the photo you took
4. You can right click on the photo in the sidebar and use > Calibrate to easily make it the correct size.
5. Create a sketch and use the line tool to draw around the problem areas on the bed. Make sure the lines form a closed shape.
6. Once done, close the sketch.
7. Right click on the sketch "Save as DXF..."
8. change the filename in the .scad source file.
9. Un-comment the '//pei_damage;' line about 25 lines below that.
10. In openscad, press F5 to preview it.
11. Then press F6 to render the file. You can then use File > Export > Export as STL and use this for your printer bed model.