HAZAA! I got it. My diagonals are now within .25mm of each other and I’m sure that’s gonna be close enough for me.I added 1.75mm of pulloff to the rail side.
Now to get that second core back on…
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Shoot I am sorry. I was making a bad Assumption. I though that was AFTER you homed. That just how the machine was sitting…my bad, sorry dude.
Okay, normally to solve this with a LR, you can loosen the end brace and move it in the strut plate a bit. But heck, you know I love a good zip tie!
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Not sure if you guys have heard of the Red Green show down there. It was a long running comedy sketch show up here and was crazy funny. At least for Canadians that is. He ended every show with a reminder to all men out there - “Remember, if the women don’t find you handsome, they should at least find you handy”. The show was a huge proponent of the endless uses of duct tape.
The zip ties are the Red Green fix. Loosening the brace and adjusting that way is not Canadian enough. Hahaha
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The red green show was the best.
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What could possibly go wrong? I’ve been asked if I can make some rocks glasses - which we already know I can. But can I make them two at a time? I have literally just enough travel. 
Tomorrow…I’ll be sure to report back.
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Sorry. We’ll have to wait a bit here. Had some last minute ice cube orders come in out of the blue only to discover that the defrost cycle on my storage freezer (storage for the cubes) had buggered and ruined all the standing inventory 
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Well, I guess you got an answer to your question? Bummer.
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Ha! Good one! I’m happy if “what goes wrong” has nothing to do with the LR!
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Well, that didn’t go so well. I don’t know how many of you remember but I had to do something about increasing the oomph going to the Z steppers in order to carry two cores. Without doing so the heavy side would just buzz and not turn. It seems that when you freeze the steppers down to minus 13F they need even more oomph to operate.
I “helped” them along to get the job rolling but once it was time to lift the gantry again to move onto the next part of the cut I forogt I needed to “help” and all shit went sideways. Or angular at least - only one side of the gantry lifted. Hahahaha
I did manage to learn a few things though. First, my freezer is way to fricking cold. The new controller should be here in the next few weeks so maybe I can get the temperatures a little more bearable. Plus if I have a job for the machines upcoming I can bring it up to just below freezing while I’m working that job.
Second, 15mm DOC was a bit much for the machine I think. Not that It was too much but that it was technically 30mm DOC since the Y was trying to push two bits through the ice, not just one. I’ll try again slowing things down a bit next time I’m experimenting. It doesn’t matter how long the job takes really - it still saves me doing the work (which I had to do tonight but that’s okay).
I’m just taking a break warming up. I think I’ll still go back into the freezer here tonight with the LR32 to see if it does what I intended it to do for me for this project.
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I would expect that you’re running into issues with your Z screw nuts or linear bearings being tighter when cold, rather than the stepper motors tightening. Silcone spray lubricant might help.
Have you tried turning your Z accelerations down drastically? I’d start by cutting them down to a 1/4 of what they were. Perhaps your max Z speeds too.
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I wonder if the lubricant on the leadscrews performs worse at cold temps. Maybe there is a better grease that is spec’ed for cold temps that could help.
Unless there is some kind of condensation, or the magnets change strength at cold temps. I don’t know why the steppers would act any different.
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Good thought.
@macboy are you using Superlube?
From a supplier here:
This note:
Temperature range -65° to 500°F
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I agree with all these ideas.
Slower is stronger (keep the travel and cutting speeds a bit lower), slower accel really makes a difference to get things moving (once it is moving it takes a lot less), Stainless vs brass (brass moves 10% more), so it very well could be too tight (check by hand), some lube can freeze or get super thick.
I love this inside the box situation, what a unique scenario.
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Oh. That is thinking like a mechanical engineer!
I’m back at it. Somehow when I take a day off it turns into a week!
I’ve just ordered some of that SuperLube - I’ll pick it up on Tuesday. In the meantime I’ll be cleaning all the lube off of the leadscrews.
Are there non-brass lead screw nuts out there? And if I change things out to 2 start, 4mm pitch leadscrews will that help or hinder this issue? I feel like that would help a bit?
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Here’s where I disappeared to. One of our mountain resorts for a Michael Kors commercial/social/campaign shoot. I tried to use the LR32 to make the rocks glasses but found out I was pushing it too hard and didn’t have time that day to fiddle. I’ve got an order upcoming for some shot glasses though so I’ll be tinkering again. I did manage to engrave some MK ice cubes that got used in the shoot. I’ll engrave some more and show you all how they looked. (That ice purse is over eight feet tall!)
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Whoa!!! That is awesome. Any idea where these pics will end up?
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Wow!
I see these made out of POM (some kind of thermoplastic) in a different style. They kinda look 3D printed…
https://www.amazon.com/4-Pack-Printer-Trapezoid-Creality-Ender-3/dp/B0888DWRW8
They will hit television and social media (and their website maybe) in the fall when they launch the winter 2025 lines. Between now and then I’ll be frantically learning up on Instagram and TikTok so I can capitalize on the exposure. They have something like 18 million followers on Instagram. I can’t even wrap my brain around that…
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Great! Ordered a set. I’ll test the change in the brass ones before I commit to the swap but it’s an easy enough swap why not give it a go.
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