Added steel channel to X-axis c-beam

[wiremonkey]

Ooooo, this is very helpful! The take away is that I don't believe all my efforts and expense to add steel to an aluminum extrusion had much of an effect. Would you agree? Next I'll try replacing the X assembly mini wheel setup with linear bearings on some form of steel X beam. I think this will be the most significant upgrade I can make presently. I'll fashion it in such a way that I can use it moving forward.
Can I post all or parts of your reply on my YouTube channel and various other forums? I think it would be helpful. I'm going to recreate your calculations so I understand how the math/physics work and do a follow up video getting into a bit more depth. And also, can I link to your calculator?
Thank you for doing this!
Oh, I should add that I think some of the other measurements are also important. For example, the measurement from the rear of the gantry gives a bit of a window into how much error is being introduced in that area. In terms of thinking about design and/or upgrades, it's good to have a big picture. I do agree that the most significant number is closest to the bit. How did you measure side forces at the collet in the X and Y directions? I didn't see any photos of that. A spring luggage scale?
Cheers,
Tyler