I tend to agree with the digital dentist. As far as cadding blocks to make sure your concept is good, that mock-up is fine. But I wouldn't manufacture it until I'd beefed up areas that you know will be issues.by albatroopa - Mechanics
I haven't been working on mine I've been working on a robotic arm that I recently got funded. render mockup gripper1by albatroopa - Mechanics
Lol, thanks for clearing that up MKSA. Thrust bearings ALONG WITH the regular bearings is the plan, I believe. And it's actually a very good idea. In case you can't tell, this is what we call a mock-up, and it's a pretty good start. I'd love for you to elaborate on your input though. One suggestion I would make is to put the motor for your X axis outside of the motor mount so that your leadscby albatroopa - Mechanics
Multistart leadscrews are relatively inexpensive through misumi. Any build pics yet, Tobben?by albatroopa - Mechanics
Ahh, lol that puts it into a whole new perspective. I see it now.by albatroopa - Mechanics
Quotethe_digital_dentist I have 1/2" lead acme screws in the Z axis of my printer. See if you can spot any problems: As I only sort of understand it, Imperial threads are only a problem when the pitch is small. i'm assuming you mean 1/2 in acme leadscrews. a 1/2 in lead means that in 1 revolution, the nut would travel 1/2 in (pitch*number of starts=lead), whereas a 1/2 leadscrew alludes to tby albatroopa - Mechanics
I went with leadscrews because they're more accurate and i figured id be able to make a more rigid system which means i could run it faster. backlash is drastically reduced as well. i'm pretty sure i had a reason for going imperial on the leadscrews, i think it was simply availability, but im not 100% sure. it was a while ago. here's a render of what's inside that v-shaped motor bracket: Renby albatroopa - Mechanics
I've been working on a printer like this for a while. Here's a render of what i have so far Render and here's the bill of materials: BoM - How to make it wear resistant? I used bronze leadscrew nuts on precision ground leadscrews from mcmaster carr. bronze is very wear resistant, plus these can be machined into any shape that you want. - How to lubricate? powdered graphite might work, or aby albatroopa - Mechanics