Make sure to choose the correct plate version for your funnel (plate_GC_revised or plate_GCP_revised)

Fasteners (to attach touchscreen housing):

• 2 M4x10 button-head screws
• 2 M4 nuts
• Loctite 242/243 or equivalent

Recommended Print Settings:

PETG or PLA, 0.4 mm nozzle, 0.2 mm layers, 20% infill, no supports needed

Attaching the lid:

1. Cut a piece of 1.75 mm filament with 5-10 mm extra length and use a heat gun to straighten if necessary
2. Thread filament through the plate and lid holes and check that the lid rotates freely
3. Melt one end of the filament to the plate with a soldering iron
4. Cut the other end of the filament so there's about 1 mm extra sticking out of the plate to melt
5. Melt other end of the filament to the plate with a soldering iron.
6. File melted areas flush if necessary.
   

Credit:

Credit to LikeableBump for the model designed for Gaggia Classic Pro (Gaggiuino - Arduino & Touchscreen Housing for Gaggia Classic & Classic Pro v2 by LikeableBump - Thingiverse). I wanted better fit, strength and printability as well as compatibility with the Gaggia Classic so made the following changes: 

• Increased width and depth of drip tray plate for better fit in funnel top based on review of multiple machines and testing. Added strategic chamfers/fillets for printability improvement.
• Made passthrough cutouts in the plate the same size so JST connectors can pass through without wires needing to be removed, adjusted housingfront for ease of printability
• Changed and tested lid knob geometry so it stops breaking during use/shipping
• Plate_GCP_revised updated to improve clearance with lid