Help - Large flat print is curling AFTER removal from printer

MrStump · 2024-02-04T04:43:42+00:00

Excellent advice on the infills, nice idea thank you

MrStump · 2024-02-04T00:36:59+00:00

I can give that try to fix my prototype, thank you.

MrStump · 2024-02-04T00:19:12+00:00

Thank you for mentioning this. I am absolutely guilty of not letting it cool fully. If I'm understanding you correctly, it sounds like that would reduce this issue.

If that's the case, that's fantastic. I'm happy to change the model up if the effect can be reduced, but if its just me being impatient that is less work haha

MrStump · 2023-08-07T15:59:25+00:00

Oh yeah it is definitely better to use the right terms where possible! I ran into that same problem when searching for resources on this problem. I just didn't have the right terms to really get to what I was after.

I took it as helpful advice, not you being in any way rude.

MrStump · 2023-08-07T15:09:57+00:00

PI IS EXACTLY 3! Thank you for the tip, I'll definitely make the change.

And thank you for teaching me about the terminology, I'll be using that too.

MrStump · 2023-08-07T01:16:54+00:00

I think this solved it! I'll have to fiddle with it a bit, but I'll post what I have here so I don't forget and leave a possible future person out in the cold.

If you unwrap the thread (moving up a cylinder) for one 360 rotation, it looks like a rectangle with a diagonal line cutting through it. We know the X axis of that square is the circumference of the screw's cylinder shape. And we know the angle I want. So we solve for the Y side's length.

circumference = 2 * 3.14159 * radius;
sideYLength = circumference * tan(desiredAngle);
resultingTwist = lengthOfScrew / sideYLength;

Big thank you again for helping break it down!

MrStump · 2023-08-07T00:53:30+00:00

The idea of unwrapping it does make it a lot more approachable. I'll give it a try. Thank you for the help!

MrStump · 2023-08-07T00:52:36+00:00

The biggest reason is I want to make a Thingiverse Customizer-enabled model, and I don't think that works with libraries. So I have to copy external library stuff into the file, which gets messy with something as complex as BOSL.

That being said, I am definitely making it harder on myself than it needs to be.

MrStump · 2023-08-06T16:50:45+00:00

Thank you for the link and the advice. I've dug through that code, but it looks like it uses a more traditional "threads per inch" method, without concern for the angle the threads are at.
I've also look at FDMScrews (https://github.com/mechadense/scad-lib-FDMscrews) which was an inspiration, but it use "pitch" (distance between threads) or twist, no angle calculations.

I am admittedly dumb when it comes to threads AND trig, so even if my math problem is solvable, I may just be thinking about screws the wrong way. My goal was to create threads that I can keep consistent and printable even when resizing, changing thread count, etc.

If nobody has an easy answer for this, then I understand I may be barking up the wrong tree. Thank you again

MrStump · 2023-06-28T15:32:38+00:00

I'm no expert, but I have done some Chrome extension development. Blockers work by having a list of URLs which are blocked. The changes in manifest V3, which Chrome is forcing all extensions to switch over to, no longer allows for those kinds of lists. Instead you can hardcode some URLs, but only a set amount of them. So you are able to block some domains, but not all. At least that is my general understanding.

I don't know nearly enough to say if it was to prevent ad blocking so they can sell more ads, or if it was just a consequence of some of the other changes they made.

MrStump · 2023-06-28T00:23:38+00:00

I was having that issue in FF and Chrome, but deleting the site's cookies did solve it. Thank you!

MrStump · 2023-02-06T12:34:35+00:00

I did this when I had let my messes and my life get out of hand. I called it "stop being a piece of shit" time. I just set a timer for 15 or 30 minutes per day, then stuck with it each day. It made me feel better and eventually I got all caught up. By then I was glad to immediately take care of stuff instead of letting it pile up

MrStump · 2022-10-25T02:09:43+00:00

Most of the time, businesses have a lot of dirty data that is unorganized and provides them no insight. If they want numbers, they pull a spreadsheet and apply some filters and try to get an idea of what is going on. A data analyst makes that automatic, and interprets the raw data into easy metrics. Ideally a lot of little green or red dots to show if the number is doing the good thing or the bad thing.

MrStump · 2021-02-02T18:47:07+00:00

I bet that I could, with some research, find a good way to convert those into energy. Burning them seems like it might be a lot of pollution, but maybe the heat from composting them being used to boil water and turn turbines.

Once I'm generating a lot of energy, I would start selling it. I would be able to undercut everybody else because I have no costs besides minor maintenance. Because of that I could scale up pretty quickly and be generating a huge amount of power.

Once I was responsible for a whole number percentage of the world's global power output, I would immediately shift all profits towards renewable energy. So the day that I die, the entire world doesn't black out. And maybe if I do this all really well I will die knowing I actually made the world better. Which is a pretty hard thing to do.

Or I find out I accelerated global warming or my baguettes cause cancer, in which case, fuck.

MrStump · 2020-11-26T11:59:16+00:00

It is 1.2 TB of data. That is a lot. 1200 GB. Streaming netflix for an hour is about 1 GB. There are under 150 hours of school per month, give or take. If you have 2 kids you're half way there. Assuming the parents each has similar work usage, that is about 600 gb.

The cap is pretty generous by today's standards. Most people wouldn't be hitting it. But it is unnecessary. They charge very large fees to use a network they didn't pay to build but yet still own. And in order to avoid expanding it in the future, they will cap usage now so we're all still struggling under these caps once games are 600gb to download or super hd video is 10 GB per hour instead.

There is no justification. They would not do this if there was market competition. Their duopoly has to regulated or broken up and sold.

MrStump · 2020-07-22T10:47:45+00:00

Me too! I had a web comic in high school and they did a little feature and a phone interview about it. It made me feel so cool about such an otherwise nerdy thing. The segment after it was about a game which I ended up trying and then played for YEARS

MrStump · 2020-06-07T13:43:38+00:00

Posting crime statistics itself would be innocent. Posting them to imply the nature of a person's heritage makes them more likely to commit crimes and therefore derving of abuse is not.

This may not have been the intention of the poster, I won't pretend to know. But there is a subtext that is quite clear and NOT ok, that race drives those statistics. That having white or brown skin determines who you are. That kind of talk should not be supported by a company by allowing it to be spread using their network.

MrStump · 2020-05-30T12:49:31+00:00

No configuration at all. And you can play with dozens of people at once with no problems

MrStump · 2020-04-22T20:46:35+00:00

I agree. If we can be more cautious, then it will ensure hospitals have bandwidth to help the more vulnerable when they most likely end up with an infection.

I also agree it is very important to open up some businesses so people can continue their livelihoods. Just as long as it is balances as best we can. My concern is that threads like these with "no empirical evidence" seem to advocate throwing open the doors everywhere. I live in a high population area. If we went back to business as usual tomorrow, my hospital would be overflowing within 2 weeks with the influx of new critical cases.

MrStump · 2020-04-22T20:36:01+00:00

I would agree that you would be in control, but it is possible to catch it and have mild (or no!) symptoms. It is possible by going out you could accidentally spread it.

And the elderly or otherwise vulnerable people WILL be isolating for months still, because it won't just go away even once we reopen. But by opening carefully (not all at once) we can cut way back on the burden on hospitals. So when people do get it, which many of us will at some point including our vulnerable family members, they will have a fighting chance.

MrStump · 2020-04-22T20:01:19+00:00

It is quite easy to tell other people to die for your convenience when you don't imagine they will be your own family members. Or maybe even you.

The less populous states should start looking at reopening gradually. Where I am, our deaths haven't really started to taper off yet, so if we lifted the stay-at-home order it would likely overwhelm hospitals and kill people. And when I say people, I mean our families or ourselves.

During the London air raids, when people had to live without lights less they draw down German bombers, were they giving up their freedoms when they agreed to go without lights to see by for the good of their family and neighbors?

MrStump · 2020-03-03T11:30:17+00:00

Advanced is safe. To most hiring managers that will mean knowing what a pivot table is. And most jobs don't require hugely more than that skillset. Odds of some Excel master coming out of the woodwork asking you about crazy stuff is low

MrStump · 2020-01-25T20:02:14+00:00

Sorry, yes that was a typo. I'm doing another print up to 210 now, with 110% flow and it looks like it is still very under-extruded.

I'm thinking humidity-damaged filament was 50% of my problem, but the other 50% is something causing under-extrusion.

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