hey everyone... ive nearly finished my router, i have the design all punched in... measured my maximum travel to be exactly 39x24x4 inches... however, i came into one small snag... the fact that i can assemble the parts in 3D with the 3D cad program i use has saved me a lot of headaches and mistakes when the real build comes... but anyway..
problem is, the bearings are not going to come into perfect contact without micrometer-like precision, and if they did, i dont think they would hold zero for too long unless there is some way to adjust the fit and tension on the bearings...
im using groups of four roller bearings per block, two of these assembled blocks per axis and i have the edges of these bearings perpendicular to each other at 90 degrees.. these will ride on a .125" thick 45 degree rail
for example, between the gantry legs, i have a .75" piece of MDF running between them to strengthen the legs.. to add support, and the edges of the MDF have been sharpened to fit a rail, which i will drill and countersink to fit to the MDF with screws, so they're replacable... ill show a photo of this...
so... i need some way to adjust either the distance between the bearings and the platform they attach to, or i need a means to adjust the distance between the rails they ride on so that i can "tighten" the fit between bearing and rail....
i did some search on this forum, and used a few key words but nothing immediately turned up....
if anyone has any ideas, or solutions, id be grateful to hear them