Lathe QCTP Tool Holder Rack - A2Z size

prusaprinters

<p>This is one of three versions :</p> <ul> <li>AXA size</li> <li>OXA size</li> <li>A2Z size (this one!)</li> </ul> <p>This is a re-mix of this print :</p> <p><a href="https://www.thingiverse.com/thing:4545509">https://www.thingiverse.com/thing:4545509</a><br/> Related video here : <a href="https://youtu.be/2Odj_uWx0Xs">https://youtu.be/2Odj_uWx0Xs</a></p> <p>I recreated the original in my own CAD drawing for two main reasons :</p> <p>First, the original holder is the wrong size for my QCTP.</p> <p>Second, if you look at the original, you will see that it is designed for a tilted back board. Since I needed these for a vertical back board, I also made an angled bracket so they could be mounted to the backboard at an angle.</p> <p>The bracket is designed to mount to the holder with four #8-32 x 1/2" flat head screws (M4 x 0.7 would probably work also). The bracket needs to be threaded with a standard tap. The bracket mounts to the back board with two #8 flat head screws.</p> <p>My OnShape 33D CAD files for this are here :</p> <p><a href="https://cad.onshape.com/documents/035098ed65691a6038cdedd0/w/d37400fc6e95ec2d0cb327e9/e/f4ce9a4204b29c3669b0bb44">https://cad.onshape.com/documents/035098ed65691a6038cdedd0/w/d37400fc6e95ec2d0cb327e9/e/f4ce9a4204b29c3669b0bb44</a></p> <h3>Print instructions</h3><p>Print in PLA using the 3mf file provided; otherwise:</p> <p>For the holder :</p> <ul> <li>0.2mm layer height</li> <li>perimeters = 2</li> <li>infill 20% grid</li> </ul> <p>For the bracket :</p> <ul> <li>0.2mm layer height</li> <li>perimeters = 3</li> <li>infill 10% rectilinear</li> </ul> <p>Print the bracket with the shortest side oriented downward - in this way no supports are needed.</p> <p>These settings could likely be tweaked further, although I do recommend using at least 3 perimeters on the bracket where the tapped holes are located.</p>