Can I find 3D print files online

[RFarrow]

Yes!  You can search places like thingaverse.com for robot related parts to print. 

FAIRY (150g)
4wd chassis https://www.thingiverse.com/thing:3022477
Dynamo https://www.thingiverse.com/thing:1215069
Wedge https://www.thingiverse.com/thing:2054276
Plover https://www.thingiverse.com/thing:2022778
Lifter https://www.thingiverse.com/thing:2435280
ERIC! https://www.thingiverse.com/thing:3031192
Blackspin https://www.thingiverse.com/thing:2805613
Blockhead https://www.thingiverse.com/thing:2812197
Barqs Bites https://www.thingiverse.com/thing:2998633
Wedge of doom https://www.thingiverse.com/thing:2946703
Firestorm https://www.thingiverse.com/thing:2927678
Vlad https://www.thingiverse.com/thing:2927358
Loader https://www.thingiverse.com/thing:2989490
Loanamo https://www.thingiverse.com/thing:1800980
Trackbot https://www.thingiverse.com/thing:2954423
MK1 https://www.thingiverse.com/thing:2374705
Shrapnel https://www.thingiverse.com/thing:1692075
Rollcage https://www.thingiverse.com/thing:1800795
Black Star https://www.thingiverse.com/thing:2065860
Top spinner https://www.thingiverse.com/thing:2828234
Plan X https://www.thingiverse.com/thing:3070730
Mini Emoji https://www.thingiverse.com/thing:3022469
Flipper https://www.thingiverse.com/thing:3186849
Vertical spinner https://www.thingiverse.com/thing:3099273

ANTWEIGHT (1lb)
Mega London https://www.thingiverse.com/thing:2945303
Vertical spinner https://www.thingiverse.com/thing:2036647
Mega Looon https://www.thingiverse.com/thing:2377051
Fidget bot https://www.thingiverse.com/thing:2513990
Fidget Stone https://www.thingiverse.com/thing:3040924
DrumSpinner https://www.thingiverse.com/thing:766609
Tiger Shark https://www.thingiverse.com/thing:3004199
Chameleon https://www.thingiverse.com/thing:2825147
Vertical Spinner https://www.thingiverse.com/thing:1401358
MrRoomba https://www.thingiverse.com/thing:3170974

BEETLE (3lb)
Under cutter https://www.thingiverse.com/thing:1749282
Colsonbot https://www.thingiverse.com/thing:1621915