Tag: corner support

printrbot GO – shoes and a socket

So after months of laboring over these little guys, I was finally satisfied enough with the results I was getting to print out a set of four corner protectors for the bottom corners of the GO. I printed these out in a single print and arranged them all so that the insides of the corners were facing each other (to minimize tool moves over the exterior perimeters) and so that they were aligned diagonally on the print bed (for no good reason). http://youtu.be/HPIpsss-DFk Printing them diagonally was Read more [...]

printrbot GO – first print

So the wiring was a little kludged together but I didn't have the patience to wait for the wiring solution Brook told me he'd put together for me, so I hacked something together to get the thing up and running using some bits from Radio Shack. I was pretty sure that the power supply which came with the bot would be underpowered for the heated bed, at least for ABS type temperatures, so after getting a tip from Brook that an X-box 360 PSU might work (the original version puts out 203 watts) Read more [...]

corner protectors in OpenSCAD (6)

Don't just jump in here, start from Part 1! Now it's time for the big finish. For our final decorative flourish, we're going to put a large rounded corner on each of the three surfaces with screw holes in them, with the radius of the corner determined by how close the screw hole is to the edge. To do this we'll need to learn a little about rotate_extrude however, one of the niftier if also more confusing OpenSCAD functions I've had the pleasure of using. And by the way, if you know a little something Read more [...]

corner protectors in OpenSCAD (5)

Don't just jump in here, start from Part 1! So we've basically got fillet edges on our piece now, but you'll notice that the actual corners are sharp and not so great looking. To make the corners look consistent with the edges, we'll need to subtract the exterior of one quarter of a sphere from the corner in the same way we subtracted the exterior of one quarter of a cylinder to get the fillet edge. The code to do such a thing looks like this: difference () { translate([-pad, -pad, -pad]) Read more [...]

corner protectors in OpenSCAD (3)

Don't just jump in here, start from Part 1! So far we've got a single object in place with two tweakable variables and a little bit of basic OpenSCAD code under our belt. It's time now to learn some new commands and a very handy new concept: the module. We'll use rotate, union and a module call to add screw holes with head recesses to our drawing. The first thing we'll want to do is define a few new variables related to our screw dimensions and placement. Not knowing what kind of screws Read more [...]

corner protectors in OpenSCAD (2)

Don't just jump in here, start from Part 1! By the way, if you're already convinced and serious about learning OpenSCAD, just Google "OpenSCAD tutorial" and you'll find some great options out there. This is as much an exercise for me in "learning by teaching" as anything else. That said, anyone still left in the room can join me in making a "corner protector" (I seem to sometimes call it a "corner support" without rhyme or reason). So to start making our corner protector, open OpenSCAD Read more [...]