MPCNC leg leveler, stiffener and large table support

thingiverse

Update 1/17/2017 By request, I've added a 7/16 rod and nut size as well. I've not updated the text below, but just download the files ending in 7-16 (7/16) instead of 1-2 (for 1/2). Introduction I created this to help level the wonderful MPCNC machine designed by Allted (Ryan). I wanted a simple way to accurately level the MPCNC to the table across all four corners, as well as to easily change the height when I want to work on different material sizes. As most MPCNC users know, the further the distance the milling surface is from the XY conduit plane the less stiff the machine is. This design lets you easily change the height of the machine to keep it stiff, get it perfectly level to the workpiece, and even provide extra support on the XY conduit runs (if you have a large table, because the connection to the conduit fits between the roller bearings). It works on the original and the 525 version of the MPCNC. Parts required You will need to print four copies of each of these parts, one for each corner. Each part consists of three components: the base, nut, and bushing. The base is a small hexagonal plate that fits onto the threaded rod, while the nut is a hexagonal nut that screws onto the threaded rod. The bushing is a small cylindrical piece that fits between the base and the conduit holder. Usage To use the levelers, start by raising the mill to the highest point where you are comfortable you won't lose the Z lock nut. Adjust the levelers so that the end mill clears the table, plus stock, plus whatever your working height clearance is (and ensure you have sufficient room somewhere to do end mill changes). Now use something such as a 1/2" piece of MDF, and place the mill at the four corners of the stock and adjust levelers to just clear the MDF. Need a different size? I apologize in advance that I have only uploaded a 23.5 conduit with 1/2" threaded rod (and 1/2" is overkill, likely I could have gotten away with 3/8" or even 1/4"). The reason for this is simply because I don't know what size threaded rod should be used with the other conduit sizes. The design is fully parametric (using Fusion 360) so it is simple to adjust it to any size. Print Settings Printer: DaVinci Duo Rafts: No Supports: No Infill: 55% Notes: I hate supports (who doesn't?) so I've gone out of my way to make sure this design does not need them. All STL files are positioned in the correct direction for laying into the print bed without rotation.