K8200 GT2 modification for 16-teeth pulleys

thingiverse

collision free modification of x- and y-drives with the option to simulate; printing the parts from Open Scad files with the option of fixing the printers deviation when printing too small holes. Instructions Hi guys, This is my modification to GT2 belts and pulleys with 16 teeth. The printing quality has improved a lot, so I could recommend you to dare this too. I choose the 16-teeth pulleys fort he reason of better torque. The usage of 16-teeth pulleys for the idlers as well makes the drives run smoother than using only bearings fort the idlers. For this modification it is necessary to make some changes to the locations of motors and idlers. It is not complicated for the x-axis; you just have to lower the x-motor position and the x-idler position for some millimeters. Solutions for that you find in different threads in the Velleman forum. The best way to get the y-axis collison free with other parts ist o lift the complete y-axis drive up for an amount of 12 mm. To check the situation and to be sure to have no collisions I made an OPEN SCAD file with all involved components, that lets you play with different parameters, so that you can check it all, before you disassemble your printer, after yo have printed the new components fort he modifications. You will have to print the following parts: 1 y-motor holder 2 y-idler holders 1 y-clip bottom (to fix the belt to the heatbbed adapter, ABS is to be preferred) 1 y-clip top (with GT2-profile) 1 x-motor holder 2 x-idler holders (one hast o be mirrored 1 x-pulley holder base I have made OPEN SCAD files for all those parts . They let you modidfy the dimensions, especially the diameters oft he bearings, because my printer does not print holes too small; To fix this issue I introduced a variable "dtol"œ, which gives to you the chance to get the exact diameter for the bearings. (If you know your printers deviation you only have to print the parts once). Further informations you will find inside the OPEN SCAD File. The file contains all modules (and corresponding informations) to create single components. Just copy out the apropriate module, paste it into a new file and uncomment the lines at the end to get the module running. After pressing F5 and F6 you can do the STL export. For the x-motor-holder there isno OPEN SCAD filed available, only a STL file. it is a modificated file (thingiverse 253741 created by donboy --- thanks very much) with following modifications (done with Blender on the STL file): removed chamfer on frame mounting holes increased distance between switch and motor block (for cable)