29"/28"/700C Gravel Bike, City Bicycle with Custom Mountain Bike (MTB) Frame Geometry. Design of a Hybrid bike for self-build. Bike with hydraulic brakes, 1-Speed belt drive and rigid fork.
My thanks goes to the GrabCAD designers for the following components:
Seatpost by Spencer Beckett
Seatpost clamp by Rik Elmendorp
MTB Grip by Kamil Podolak
Brakes and Handlebar by Terho
Thru axles and Wheels by max morozov
Headset by SG
Stem by Henk Kommers
Drivetrain by Tomasz Gawroński
Pedals by Jonathan Brazeau
Thank you all! These really helped me to design this frame and fork!
One big mistake I got pointed out is the regulation of the rear dropout. The brake pad should be moving with the rear axle, but my mistake was to make it stationary with the frame. Rookie mistake I will learn from it. What are your thoughts of this design?

Thank you! End goal is learning experience. I want to make it from AISI 304 stainless steel too. I know it's an awful material for bike, but It's a material I get my hands on at my workplace. Also I have over 10-years experience TIG-welding stainless steel. This would be like the one-time exponation of my design skills, welding skills also fixturing skills. I want to use my siegmund welding table not some custom made bikeframe fixture for this. I already have 2 bicycles I love to ride daily, one SCOTT city bike and one KONA mountain bike. So the goal of this project isn't some super effiecent production bike.
I watched a video a while back of 304 frames in Korea, I hope you build and post pics.