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This is a weird thread. Neither is "better", because machine design is so nebulous and context-specific. A "moving spindle", as it's termed...
Screws not being straight is somewhat normal, really- maybe from shipping or storage, I dunno. If you have something that can serve as an arbor...
Yeah, the two machined ends and the length of the nut have to be taken away from the distance. In total it should be right around 100mm for 1605s...
The motors are natively 200 steps per rev. This is where they'll have the most torque and accuracy (ie. they'll stop where they say they're...
If you can go simple, go simple! I have some 74HC00 quad NAND gates on their way so that I can do single-wire active-switch active-low limits,...
Ah, gotcha. So have a switch exactly in line with one of the existing limit switches, so that both motors drive until the first one triggers, then...
I'm confused as to the utility of auto-squaring anyway. Unlike auto-levelling, it doesn't seem to serve a meaningful purpose. If you set your...
I'm looking at similar lengths of 1605 ballscrew at the minute. Very inexpensive, and IIRC backlash on the regular ones should be consistently...
On my actual mill, I use Lucas X-Tra Heavy Duty NLGI #2 grease (green) on the screws. Might be overkill for an extrusion machine that can't cut...
If you have the capacity to turn an internal trapezoidal thread (or tap one in a drilled hole, probably easier for multi-start unless you have a...
Get two nuts, put a spring between them and hold them together with enough slop to move back and forth a few millimeters. Boom, anti-backlash nut....
"...Let's kill the people who point out the socioeconomic biases, inequities and harms endemic in society wrought through lack of forethought or...
If it's gantry flex, your cutting forces are too high for the height of your gantry (ie. the leverage of your z-axis), and it isn't internally...
Cheapest option is to forego the 4th axis and run it as a traditional 3-axis machine, where you can get out for maybe $25-30 depending on how much...
Yep, a steel case with the entire case tied to ground is the way to go, for sure. You can also see that internally I have almost no mains wiring...
Yeah, I'm kinda dubious about that setup. There's a reason PC chassis are still big ol' hunks of sheet steel with separate compartments all over...
Not sure I like logic ground being connected to power ground on that schematic. It's not necessarily bad, but creating loops that don't need to be...
:D Just make them, I dunno, 0.5mm less than the V-Slot width, and bam. As long as one of the sides of the bosses is colinear within a column,...
Asked my friend from uni who's now a researcher at UNLV and spends way more time playing with CO2 lasers than I do, and he said this: In any...
*cough* Skimming through page two, it seems like a beat-for-beat rehash of page one, complete with lack of conclusion, so I'm just gonna address...
