Mistakes were made... Unipolar 3D printer part 15

Подписаться 11 тыс.

Просмотров 6 тыс.

50% 1

Get a last minute Christmas deal on prototyping PCBs and 3D printing at: www.pcbway.com/ !
Time to dish the dirt on my $50 DIY 3D printer! Some of the corners I cut to stay true to my promise of a printer that cheap were a bit too much I guess... I'll call this the final installment of phase 1 of this project, the next 2-3 parts will be dedicated to making the printer spit out decent parts, hopefully at a much more rapid pace than the rest of my videos have been so far. Many of the issues discussed here I've been aware of for a while, but decided against talking about it in the respective videos as it would have made them much longer, so I dedicated a full video to it instead.
The untested 90° duct for 4010 radial blower fans on my thingiverse just in case someone can use it (though it might not be good): www.thingiverse.com/thing:639...
And the duct by "unwohlpol" I ended up using: www.thingiverse.com/thing:404...
Here's some affiliate links* to parts I got for this printer:
5pcs A4988 stepper motor drivers: s.click.aliexpress.com/e/_Apv00b
Cheapy hotend kit: s.click.aliexpress.com/e/_A217Gn
Arduino mega 2560: s.click.aliexpress.com/e/_AnxG2B
Geeetech PLA filament: s.click.aliexpress.com/e/_DBW...
4010 turbine fan: s.click.aliexpress.com/e/_AnUid9
100k NTC temperature sensor for heated bed: s.click.aliexpress.com/e/_A9cOwJ
10m nylon coated fishing line: s.click.aliexpress.com/e/_9HKabt
Keep in mind I got a few of these items during sale, so the total might well be above $50 now (especially with inflation)
And link to the proper POM bearings I bought for my laser engraver:
s.click.aliexpress.com/e/_DCA...
* if you decide to purchase something through an affiliate link I may receive a small commission at no additional cost to you :)
-------------------------------------------------------------------------------------------------------
Support this channel on Patreon: www.patreon.com/user?u=81848920
Follow me on T̷w̷i̷t̷t̷e̷r̷ - X for random updates and personal opinions on different topics: / chronic_atronic
Join r/chronicmechatronic for occational peeks behind the scenes, or general project discussion!
My abandoned Shutterstock:
www.shutterstock.com/g/Floraf
Or download free stock photos from my profiles on Unsplash:
unsplash.com/@floraf
unsplash.com/@clicabout
-------------------------------------------------------------------------------------------------------
Additional graphics from: www.cleanpng.com/

Наука

Опубликовано:

23 дек 2023

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 83

@PasquinelOrtiz 6 месяцев назад

your failures teach you more than all your victories. Good job my friend.

@aaamott 6 месяцев назад

Seems my comment deleted itself when I edited. Anyway, well done so far! Three suggestions that may help: 1. Add G28 X Y to your layer change gcode. That will home those axes each layer and fix drift between layers while you work out the problem. 2. Check out past printers that have used cable/line driven axes. There was a sand table a while ago that used a series of pulleys to pull the filament off the shaft and onto a pulley and back to the shaft every wrap so the line couldn't walk. Said there was no drift. A robot actuator too. Actually, even the Apple ImageWriter and many old Dot Matrix printers used cables with steppers. I think the printers homed every line too. Even some old 3D printers did that. Some had sandpaper around the pulley. 3. Geared steppers have backlash, and those ones in particular were popular for tiny printers at one point. Marlin has backlash compensation built in. You might want to check that out. I know of a few printers that only used those steppers and fishing line. I'll try to find one and comment again.

@ChronicMechatronic 6 месяцев назад

Yeah something's up with comments at the moment, I also didn't receive a notification for this one. Thanks so much for the suggestions! Homing between every layer is pure genius! I'll immediately try it and post a short with the results!

@joetkeshub 5 месяцев назад

You combine two major qualities any engineer should have: intuition and a good analysis skill. The leveling knobs are cute. A happy end eventually.

@kokodin5895 6 месяцев назад

inteesting if you are going lead screw way remember few things 1, triangular thread is ment to have much more friction than square one so lubricate the screw to not get stuck in place 2. backlash will only grow so put a weak spring and another nut floating to remove backlash, because if you start getting backlash it may be bigger than single step 3. use normal length brass nuts instead of steel ones because it is easier to controll backlash and wear when you know what wears out faster. in other words steel on steel friction is no good because both surfaces wear out evenly , only they wear out only in places you move so you end up in wear out spots on a screw and flopy nut while parts of the screw are still fresh, this is where brass nut with backlash nut comes in you get most wear on the softer metal which is also partially self lubricating

@scottbaeder37 6 месяцев назад

use high temp epoxy if you want to be certain - they make stuff like that to "weld" things together. I tyhink you have analyzed things well. I really enjoy your work! Best wishes for 2024!

@ChronicMechatronic 6 месяцев назад

Thank you! Have great holidays! :)

@Elkarlo77 6 месяцев назад

Great Work, reminds me of my first Printer, a Teebot, where i only got some parts a Manual and no hole was at spec and had to be worked. It's a Mega 2560/Ramps 1.4 printer. It's janky but it works most of the time even after 9 years and 4 rebuilds, Zip ties were my friend when several parts broke and i had somehow to print the replacement parts. A Geetech Prusa Clone was my second printer and since then i use the filament of them, great quality for it's price. Now you got a working printer, keep improving it and reprint parts. To be honest i would get myself a used Vanilla Ender 3, for around $99 without upgrades in 2020, today they are around 80 USD, Ender 3 and Anycube Cobras. Those cheap Printers not realy beginner Friendly. Building your own is a whole other experience and helps to keep those printing. ATM i am rebuilding one Ender 3 Pro as Demonstration Printer for a School (Only have Core XY were nothing is to look at) and i will take other my Ender 3 Hulk and build a Voron Switchwire around it. Long story short, the first Ender 3 pro broke after 1800 hours, it was cheaper to buy another Ender 3 for 100€ new and putt all the Pro Parts on it, but those printers need a rebuild after 500 hours as well. 3 of the 4 Wheels for the Bed were broken after 500 hours ! Since 2014 i am building DIY Kit Printers and improving them, great work creating your own Printer !

@foosinn 6 месяцев назад

The Raspberry Pi Imager tool has a finished sd card image for Klipper. The hardest challenge will be compiling the firmware and flashing your controller, this - i think - is only in linux possible. But with lead screws Klipper will most likely not bring any performance advantages, even though the web interface would still be nice. Your print speed issues are most likely due to max volumetric flow limits and even more likely to minimal layer time. The slicer will slow down to ensure both values.

@joetkeshub 5 месяцев назад

Pretty instructive Ben! I do think that it's a prowess to make that wood-based unipolar 3D printer operate. A genuine achievement. Happy new year Ben! Looking forward to watching more and more surprising posts.

@ChronicMechatronic 5 месяцев назад

Hi Philibert! Happy 2024! Yeah it's definitely a challenge, even with the upgrades it'll require a lot of tuning to get right, something I'm generally too lazy to do 😂

@GarryHeard 6 месяцев назад

Great work on this printer with your innovative approach! This last video really is the most important of the series. It's great to see you make things, but your truthful analysis of the results is worth a lot! Keep on making things and teaching us all new things!

@fouzaialaa7962 6 месяцев назад

i converted my 3D printer into a lazer printer ,all i had to do is i printed a hot swappable mount for both the nozzle and the laser module ,so when i want to print i mount the nozzle and when i want to cut i mount the laser you can use Lasergrbl if you want free software , i use a ramps 1.4+arduino mega +Marlin, i use LightBurn since it has support for Marlin directly LightBurn is free for only 30 days but i refuse to pay for a software that i have to pay 60$ just to get an update

@joetkeshub 5 месяцев назад

That device is beautiful. If it was not working, you would have the consolation that you've made a nice piece of Art.😉

@Bruceanddenise 6 месяцев назад

I sure appreciate all the work you accomplished, on a project you had no interest in, with scraps, junk and spit! Learned a lot!

@antonventura6364 5 месяцев назад

Jeez man these videos are ultra outstanding. The overall traits of problem solving will really benefit engineering students now

@psygonzo7974 6 месяцев назад

Oh God this guy with his weird ideas and accent again XD Love this series!

@icey_projects 6 месяцев назад

Great video as always, hope you have a great end of the year and beginning of the next!

@alejandrorivera478 6 месяцев назад

great video, merry christmas Ben!

@ChronicMechatronic 6 месяцев назад

Thanks, same to you!

@hardwareboy5079 6 месяцев назад

Finally finished this printer, good luck

@dekutree64 6 месяцев назад

My secret weapon for the final refinement of flat/parallel/square wood surfaces is an extra-extra-coarse DMT Dia-sharp stone. It's a bit tedious since you have to brush the dust off every 10-20 strokes and it still gets lumps of compacted wood dust after a while, but a quick wash with water gets it back to pristine condition. And it's only 8x3", so larger surfaces aren't guaranteed perfectly flat, but with regular straightedge/caliper/square checking you can get pretty darn close.

@ChronicMechatronic 6 месяцев назад

I think I'm too lazy for that 😂 Plus the straight edges on my steel rulers all have a curve to them

@Fejszi 6 месяцев назад

hey man! As I've said in my comment on your previous video. I love your channel. Just thought about any easy way to make the x axis almost bulletproof: You could just nick the X gantry from an inkjet printer, they come with built in belt, tensioner, they a re usually quite rigid, though you'd have to figure out a way to drive a DC motor from a signal that would be used with an A4988. on the plus side, this would mean that you have closed loop control of the X axis, thus eliminating layer shifting on the X axis...

@ChronicMechatronic 6 месяцев назад

Thanks :) So far I haven't come across an inkjet printer gantry that was any good of its own. But I am planning to work on using DC motors in closed loop control for 3D printing!

@aaamott 6 месяцев назад

I promise, I'll make a video to help with this! I haven't had a chance yet, but it will come! It uses a quadrature encoder, and I was surprised at how accurate it is.

@ChronicMechatronic 6 месяцев назад

@@aaamott I know, I recently checked your channel too see if you had already done it. That coreXY you built is insanely fast!! I had never seen 800mm/s before 😅

@ChronicMechatronic 6 месяцев назад

@@aaamott BTW take your time with the video, I won't immediately get around to the DC motor thing anyway. But thanks a lot for helping with it, I wouldn't be quite sure how to approach the feedback part in code!

@besenyeim 6 месяцев назад

Budget inkjet printers (ans scanners and so) evolved a lot over the decades. New ones are stripped down to pennies. Mechanical motion and structural functions are often integrated in injection molded plastic parts. Sadly, not that easy to reuse.

@alyl603 6 месяцев назад

I haven't finished the video yet, so maybe you get to it later but if you see that your speed is slow even when upping acceleration, then you probably have auto cooling (filament tab) set to automatically slow down to have a minimum layer time. so either change the "minimum speed" or "minimum layer time" or outright turn off the feature. ofc this could cost some print quality

@Sttreg 6 месяцев назад

Trust me, I was thinking similar, but klipper is just way better. I have always found kind of hard to understand what to do with marlin, where to edit the proper stuff and how, then to compile etc... but klipper is just so easy. Litteraly. I have been using windows all of my life too

@ChronicMechatronic 6 месяцев назад

I haven't even bothered to really try and tune anything yet... But I'll think about Klipper when I eventually want a camera to monitor prints, okay? :)

@narxic 6 месяцев назад

Thank you for sharing, the good and the bad.

@RCoryCollins 6 месяцев назад

Great series!

@TheRainHarvester 6 месяцев назад

Great iterative design techniques! I wanted those bottle cap vgroves to work! They are expensive. Maybe smashing 2 together with bearings on a shaft could form that inside ring? I mostly finished my CAM program. It's at the end of my latest video.

@ChronicMechatronic 6 месяцев назад

Making those sleeves with 2 bearings from bottle caps is possible, just a lot more work. I can show how to make one for the video, but really don't wanna do it 16+ times anymore 😬 Hence why I'll let the sponsor deal with them 😜 Thanks for letting me know, I'll take a look at it!

@JoaoCarlos-df1zw 3 месяца назад

Hey! Don't know if you know that, but i found a thing called 'Capstan and Bowstring' that, as far as i know, is the mechanism used for the X axis. Just putting it here if useful in the future

@ChronicMechatronic 3 месяца назад

No I didn't know, thanks!

@llkurofoxll1013 6 месяцев назад

that's the most 2012 looking printer i've ever seen

@EngineerNick 6 месяцев назад

*claims not to understand micro-stepping*... *presents excellent diagrams illustrating how it works* I like your plywood printer :)

@ChronicMechatronic 6 месяцев назад

I love getting this type of comments on my own videos, usually I only see it on bigger channels 😅 Seriously though, the diagrams I showed were just a simplified visualization of the mechanical movement - the whole process from PWM sent to specific coils, to the magnetic field strength that builds up, getting turned into rotational movement dampened by the springiness of the magnets, plus all the various bending and flexing of the gantry until the motion actually reaches the nozzle, is a wonderfully complex system that's really hard to wrap one's head around. A lot of what I explained I only fully understood through the process of coming up with that explanation and the research I did for it!

@paragonrobotics 6 месяцев назад

You could probably mount the bed like lulzbot does on their taz series to avoid having to drill holes in it.

@ChronicMechatronic 6 месяцев назад

Yeah I've seen that, problem is I have nothing underneath to mount it to, since the glass is the only component of the bed

@goiiia3774 6 месяцев назад

20:48 Maybe not to use a wheel, but to make the bearings travel directly along the corner?

@ChronicMechatronic 6 месяцев назад

Wears down the aluminum in no time, plus it's harder to mount the bearings in that 90 degree angle without 3D printed parts. I toyed with the idea of running separate bearings on each side of the corner for the laser cutter, but ultimately the V-groove rollers save a lot of hassle and complex geometry for mounting the bearings.

@aminorinternet 6 месяцев назад

A creality engineer told me the cost to manufacture an OG ender 3 is $48 - below your hard limit!

@ChronicMechatronic 6 месяцев назад

Damn, let's swipe their warehouses then! 😂 I wonder how they do it though, that means those damn NEMA 17 stepper motors can't be more than 3 bucks even though they sell upwards of $7.00 everywhere. So they have like 75% profits, which is insane 😬

@besenyeim 6 месяцев назад

@@ChronicMechatronic 75%, no. Manufacturing is not the only cost of products. The development cost has to be spread, logistics, taxes, the company's other operational expenses, etc. 3 bucks? Maybe 2. The keyword is volume. Just look at electronic parts distributors' open offers: 1 piece = $1, 1 of 10000 pcs = $0,005. This may be exaggerated, but closed-doors deals of millions of parts can be unbelievable, if you're used to buy a few parts a time.

@ChronicMechatronic 6 месяцев назад

@@besenyeim right, how could I forget literally all the companies other operations are living off this revenue, given 20% of my own channel's income goes straight to social security... I do wonder how those stepper motors go from $2 to $8 though, is that really all added by the logistics of distributing it in small quantities? Because of the bulk pricing I try to buy things in quantity whenever possible to spread the cost. Even just a set of 10 A4988's is definitely worth it over a single one.

@boydmcree9085 2 месяца назад

this was good, you used a lot of my time.

@allanmusumba4053 4 месяца назад

you can add wifi or bluetooth functionality

@Yate669 5 месяцев назад

I will ask something, when I do something with these motors, cnc etc., there is a rattling from the motors, how did you solve this problem, for example, when I do left and right on an x-axis, there is a click during the brass and the calibration is broken, please help

@ChronicMechatronic 5 месяцев назад

I'm afraid I need more details to be able to help. I assume you have the same low-res steppers I used? Those inherently chatter during slow moves due to the large step angle, there's nothing that can really be done about that. My printer makes a lot of noise at lower speeds too. What do you mean by the calibration being broken?

@jeppelysebjerg8075 6 месяцев назад

Great vid, a cool perspective on budget building. Also good video/edit quality. I do think tho, a little less talking and more building could be nice.

@ChronicMechatronic 6 месяцев назад

Thanks, people rarely mention my editing! I understand where you're coming from with the "less talking" - my explainer videos are admittedly very dense by nature, due to me trying to fully explain the topic so nobody gets left behind. It might not be for everyone. My build videos are better in that regard though, and I am trying to slowly move away from talking so much because coming up with these dense explanations is pretty exhausting for me too!

@jeppelysebjerg8075 6 месяцев назад

Arh, Got it. Keep it up tho! Would love to see more content from you :D

@ChronicMechatronic 6 месяцев назад

@@jeppelysebjerg8075 there will be! Barring some extreme circumstances I'm in for the long haul - I have so many ideas for cool projects, even in 3D printing where I thought everything was set and done with nothing left worth exploring 😅

@munifkhan5724 4 месяца назад

I can buy NEMA 17 motors for around 1 to 3 dollar (70 to 200tk in my country) from a junk shop nearby But I don't have the nessesary components and budget to build a printer 😅

@ChronicMechatronic 4 месяца назад

Ngl y'all have so much access to cool trash, over here I can't even pick up ewaste at the recycling center because it's "prohibited" 🥲

@ChronicMechatronic 4 месяца назад

The upfront cost of the printer isn't even the worst, the filament gets really expensive really quick

@haydenc2742 5 месяцев назад

Octoprint, Octoprint, Octoprint :)

@ChronicMechatronic 5 месяцев назад

-_-

@user-dt7ce5wv3n 6 месяцев назад

now its time to make a resin printer

@ChronicMechatronic 6 месяцев назад

Currently I'm leaning more towards a small high-res (0.1mm nozzle) FDM 🤔

@user-dt7ce5wv3n 6 месяцев назад

ithink it will clogue so fast because of dust and particales in the filament @@ChronicMechatronic

@mikejones-vd3fg 6 месяцев назад

lol Linux, tell me about it. I typed a million commands I didnt understand in terminal to setup a esp32 development environment then got an error. Thankfully there was another magical terminal command that fixed that error but had no idea what i was doing and it didnt give me much confidense my system would last without have to reinstall everything sooner or later after typing in the wrong command.

@ChronicMechatronic 6 месяцев назад

Pretty much perfectly sums up how I use Linux!

@mikejones-vd3fg 6 месяцев назад

Wait a second, 0:16 That star in the background there, looks 3d printed, your hiding a bambu labs x1 carbon in the closet arent you!! you dont need this wooden printer!

@ChronicMechatronic 6 месяцев назад

Haha no worries, theres no chance I'd spend that kind of money on a 3D printer! 😂 The star is actually an origami star made from paper. It's true I have another printer, but it's the SP5 from my "review" on Halloween and since then I haven't printed much on that either. It's safe to say, if I hadn't decided on a whim to build this wooden one which kind of derailed into this whole saga, I would still be as happy without a 3D printer as before 😅

@xXKisskerXx 6 месяцев назад

While Klipper is nice, it should NOT be on each and every printer. Everyone seems to have gone Klipper Krazy, and honestly, it's not even beneficial to most the printers people want to see it on. I support your choice to NOT put klipper on it. Until you see a need for it - stick with Marlin, because honestly most people don't realize just how much Marlin has - most the things people say you 'need' Klipper for... Marlin 2 supports....

@ChronicMechatronic 6 месяцев назад

Thank you :) There's definitely a lot of hype around Klipper, I think the average Joe probably won't even notice the difference - I certainly wouldn't, that's for sure. I also saw something called input shaping in the menus of the TwoTrees SP-5, no idea if that's the same thing Klipper does though

@amogusenjoyer 5 месяцев назад

But what's the upside of using marlin? I get that it can do almost everything klipper can, and more, and that klipper is not fundamentally better. But why not use klipper if it works too?

@ChronicMechatronic 5 месяцев назад

@@amogusenjoyer to me the advantage of Marlin is that, unlike Klipper, I can easily use it being familiar with GRBL. With so much of my time being taken up by making the videos I kinda need to spend as little time figuring out how to actually do things as possible, or else I'll get even fewer videos done...

@amogusenjoyer 5 месяцев назад

@@ChronicMechatronic ohhhh I didn't know that! I'm not familiar with marlin but that makes a lot of sense. Klipper is fun but just actually making stuff like you do is even more fun , instead of having to learn something for no reason😅

@ChronicMechatronic 5 месяцев назад

@@amogusenjoyer I don't mind learning stuff, I actually quite enjoy it and do so with almost every video, but with my primary objective being to make videos, I can't really spend days or weeks trying to figure out something I've never done before just for a 5 second remark, because that's all time I don't spend working on the actual video itself... I'm already slow and inefficient enough as is. Plus I genuinely loose interest as soon as something works for what I need it to do - which Marlin does 😂