現成CAD圖

https://www.thingiverse.com/thing:3170748

have STEP

https://www.thingiverse.com/thing:4623180

have STEP

https://www.thingiverse.com/thing:5225652

no STEP, only STL

https://www.thingiverse.com/thing:4590120

no STEP, only STL

https://www.thingiverse.com/thing:2038205

有 STEP, STL

https://www.thingiverse.com/thing:3037464

有 STEP, STL