3 Tube Gantry LR3 Build: An Idiots Tale

[azab2c]

@claytonisbob, noticed your belts are horizontal, are you currently, or planning to use an extra fixed belt on each y-axis (like @tgm022861’s build) to help reduce slack like this LR3 Mod?

Modified motion control on Y-axis

I did start with a small, stock LR3 build for this project. My goals for it were to replace my Primo if it will perform as well as the Primo and to evaluate the gantry design for a NEMA 23 version to replace my NEMA 23 LR2. I think I will need to use the 3 rail design that someone else created to mimimize deflection while supporting my 2.2kW spindle on a 5 foot span. I am using a pair of idlers to pinch the short length of belt. [20221026_164256]