Carrera Strax Carrier
thingiverse
I tried copying the original part but making it better 3D printable. I have three variations/revolutions:v1 (heavy): this is closest to the original, but needs more supportv2 (medium): a bit lighter and needs no support in the centerv3 (light): very lightweight, best fitting, my favoriteUnfortunately, the two pins which connect to the track easily break off... Be careful.You need supports at the edges, preferably touching the main part or with brim, otherwise it could lose contact to the print bed... I used Cross Supports with 1.6mm horizontal expansion.
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