Design a bicycle brake disk in Solidworks


watch this video
https://www.youtube.com/watch?v=6x5Yz7o_u_s&index=11&list=PLmuvsiRvlYsHKk-gxltS24V3BG-MO3-G7
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Step 1:
https://www.youtube.com/watch?v=6x5Yz7o_u_s&index=11&list=PLmuvsiRvlYsHKk-gxltS24V3BG-MO3-G7