UPDATE 11/27/16 - I've added a J Variant (25.4mm) Let me know if there are any issues.. I've also updated both the C and J versions so they are oriented correctly to the print bed. -I will be working on an F variant soon!
UPDATE 10/1/16 - V1.2: I've modified the part so you can use the same length conduit as your leg height. Pushing your conduit completely into this support, and all the way into your Foot_Flex_Bottom part, you will yield the correct rail height for your span. (To eliminate any guessing and measuring to get the sag out of your rail). This version is adjusted for the Y-Axis (Usually the longer axis, Sits on top of the X axis rail in your corner parts)
Here's a rail support I created by modifying one of the Lock_Corner parts for the "C" MPCNC. It is meant to support the 23.5mm conduit on long spans when building an MPCNC machine (Thanks Vicious1!).
This part can be used with a standard MPCNC Flex_Foot_Bottom part as the base. I will edit this with the exact length difference of the conduit needed to support at the same height as the conduit lengths cut for the corners already. They are not the same, though, they are probably pretty close.
The hole in the center is meant for a 5/16 all thread, though it is a little tight. I will update it with a slightly larger hole for ease of use. Updated to standard clearance size
I created this for an 4' x 8' MPCNC I'm currently building in my garage. Please, if there are any suggestions, or requests, please let me know.
Best Regards,
RidDleZ.
I printed this with the following settings with excellent results. (same settings I used for my whole MPCNC.
Layer Height: 0.25mm
Infill: 55%