Baby stroller extension board adapter

I bought a second hand extension board to ease the life of my 5y/o while we go for walks with his baby sisters on the babystroller but it came without the necessary adapters to attach to the stroller, so I designed my own.

Stroller: Red castle evolutwin

Extension board: Lascal buggyboard mini

Print instructions:

• infill 15%
• print with supports

Required hardware:

• 16x M3 threaded inserts
• 4x M3 10mm bolts for the clamps
• 12xM3 16mm bolts to attach the top and bottom parts of the adapter