I do not know why it is so strange for me to see a box I packed on the other end unpacked. Why do I remember them all, I have packed thousands of boxes?
I like to repurpose all the packing materials I can. I still recycle a absurd amount of material, but I reuse anything I can that is clean. Lots of filament bags. Still can’t find anything to do with old spools though.
Today’s amazon gift, screws! No more mixing whatever I could find in my parts bin. Philips, socket head, and button head of different lengths. Now everything is a stainless steel button head. Woohoo for consistency!
While experimenting with my jumble of screws, I found that M5 x 25mm worked better for most of the YZ assembles. The 30mm screws protruded a bit too much past the nut for my liking, but that’s just me being nit picky.
I couldn’t wait for the endstop screws to arrive. I put everything together this evening. I know that I will have to strip things down again, but I’m super happy with how this is all coming together so far.
This morning I migrated my klipper test setup (rat’s nest of wires on my desk) over to my work bench in preparation of stepper testing. I took this opportunity to re-wire the Pi to use the local UART and power from the “AUX-1” port of the SKR 1.3. I think this 350W PSU is overkill, but I had it on hand. Maybe I can power a 24vdc laser at some point.
Has anyone used a DIN rail on the back of the LR3? I think it would be both ridged and provide additional mounting options for controllers and power supplies.
While looking for ways to route cables from the far side of the gantry to the other, I found myself wishing there were built in routing channels inside the braces. I thought this was a perfect opportunity to contribute in to the project in a very small way. I modeled up a C channel that uses the open screw hole at the bottom of the brace to mount. It seems to work well.
I installed my endstops this morning and found that the Z axis endstops are not triggering. The instructions states that if that happens, you can bend the lever a bit. I feel like I would never get them bent consistently. Also, if I ever need to swap one out, I’d likely forget to bend it and grind something. I’ve remixed the endstop mounts to lengthen them by 3mm. The slot is also longer for additional adjustability.
Please don’t run that board on top of a conductive bag. It might never have an issue, or the electric pixies might decide they don’t like you and fry the board.
Hi Barry, thanks for the heads up. I know “I’ve been doing it for 20+ years” is not a good excuse, but that antistatic bag has a significantly lower chance of shorting something than the solder sprinkled silicon mat underneath it. I guess I should just clean my work bench.
I’ve now extended it to 6mm. I see how it fits after work.
The controller case is finished! The fitment between the base and the lid are a little loose, but I think once the screw is in the end, it should be fine. I was worried about extra noise from rattling, then I remembered what I’m building. #ThereWillBeNoise
Bending the tabs is fine, you will never adjust or bend either of them perfectly, that is why we adjust the endstop offset later. You will pretty easily get the Z level to under 0.2 mm over 4’ in a couple tries.
Oh absolutely, but I know me. If I have to ever replace it, I will forget to bend the new one then proceed to break off the lead screw holder as it overshoots on homing. The small modification to the endstop holder is better for my particular brand of forgetfulness. If I get it to work and others find utility in it, I can post it for public consumption, if your license allows (I still need to read it).
I’m not sure about generally available, but @jeffeb3 post a link to it in the thread below. I had to create an Onshape account to access the project and export the STLs.