WEBVTT 00:00:00.320 --> 00:00:05.359 ah you thought i meant a wireless router 00:00:03.439 --> 00:00:11.040 like for the internet get your mind out of the deep web 00:00:07.440 --> 00:00:12.559 today's video is about our fancy new cnc 00:00:11.040 --> 00:00:15.120 router that i hold on i know what you're about to 00:00:14.400 --> 00:00:21.760 say i will admit that here at Linus tech tips our track record for maker type 00:00:19.600 --> 00:00:25.519 projects isn't exactly pristine 00:00:26.240 --> 00:00:34.559 but the point is we want to get better now we could spend 00:00:31.279 --> 00:00:36.320 years honing our craft making mistakes 00:00:34.559 --> 00:00:40.160 learning from them and eventually becoming masters at working with our 00:00:38.559 --> 00:00:44.399 hands but instead of doing that we're going to 00:00:42.160 --> 00:00:51.039 build a robot to do all the difficult machining for us so here it is this is 00:00:47.760 --> 00:00:53.840 our four foot by four foot cnc router 00:00:51.039 --> 00:00:57.280 that cnc router part sent over to us and we're gonna walk you guys through 00:00:55.199 --> 00:01:01.359 how to build it and how to use it to do really cool stuff like make this memory 00:00:59.840 --> 00:01:04.879 express is the go-to place for your electronic needs and services in canada 00:01:03.600 --> 00:01:09.119 and they're opening a new store in victoria bc they're hiring for all 00:01:06.960 --> 00:01:15.760 positions so check them out at the link in the video description 00:01:18.799 --> 00:01:26.560 so here we've got 13 boxes that's maybe what like a ton worth of crap 00:01:24.560 --> 00:01:30.960 and we're gonna have to make all of that using 00:01:28.080 --> 00:01:35.840 a 244 page document and in the end hopefully we'll have a 00:01:32.400 --> 00:01:39.720 fully functional cnc router 00:01:35.840 --> 00:01:39.720 i guess we'll just start now 00:01:44.479 --> 00:01:50.720 they call this the industrial erector set and i don't know anyone who's an 00:01:48.640 --> 00:01:53.360 engineer definitely gets 80 20 boners so it makes sense 00:01:53.520 --> 00:02:00.079 this must be for the gantry that thing is huge 00:01:57.200 --> 00:02:04.960 so once this is tightened down on there that is not going to go 00:02:02.799 --> 00:02:08.239 anywhere at all putting the router table together is 00:02:06.640 --> 00:02:12.560 pretty straightforward thanks to the excellent included instructions you just 00:02:10.640 --> 00:02:15.360 join the extruded aluminum together using the anchor fasteners tighten them 00:02:14.480 --> 00:02:19.040 down and then repeat what feels like 10 000 00:02:18.080 --> 00:02:23.040 times extruded aluminum is actually great for 00:02:21.120 --> 00:02:28.560 machine frames because you can create extremely strong joints without giving 00:02:25.680 --> 00:02:32.800 up modularity so compared to a welded steel frame if we decided in the future 00:02:30.959 --> 00:02:38.560 that this router wasn't quite big enough for our needs expanding the bed is 00:02:35.440 --> 00:02:41.120 relatively simple this table is so 00:02:38.560 --> 00:02:47.120 freaking sturdy like holy crap i can like 00:02:43.120 --> 00:02:48.560 this thing is not going anywhere at all 00:02:47.120 --> 00:02:51.840 i guess that's why it's called the pro version holy crap 00:02:53.840 --> 00:03:00.080 precision linear rails are added to the sides of the table to give an excellent 00:02:58.000 --> 00:03:04.400 bearing surface then to make sure they run smoothly we just need to add a 00:03:02.400 --> 00:03:10.159 little bit of grease yay the gantry holds the spindle and moves 00:03:07.840 --> 00:03:13.840 around above whatever we decide we want to cut 00:03:11.120 --> 00:03:16.800 so from here we added the stepper motors and we were basically good to go 00:03:15.440 --> 00:03:19.840 mechanically onto the electronics 00:03:20.239 --> 00:03:26.319 so you guys have seen computer power supplies before but look at this guy 00:03:24.400 --> 00:03:30.159 holy crap so i'm just making this up 00:03:29.120 --> 00:03:35.120 because i don't actually know what everything is but i'm guessing that these two are 00:03:33.120 --> 00:03:38.640 power supplies we've got a board here that's going to 00:03:37.280 --> 00:03:44.480 be the controller that goes to your computer 00:03:40.480 --> 00:03:46.400 and each one of these is a stepper motor 00:03:44.480 --> 00:03:51.280 or it'll be an output to a stepper motor so we'll connect one to each one of 00:03:48.319 --> 00:03:55.360 those and they probably take fairly high voltages i'm not totally 00:03:54.080 --> 00:03:59.599 sure but this power supply right here is for 00:03:57.519 --> 00:04:04.159 one motor only and it's good for 00:04:01.400 --> 00:04:07.680 2200 watts that's wow there's not even a whole lot in 00:04:05.439 --> 00:04:11.200 there that's crazy that they can get all of 00:04:09.680 --> 00:04:15.400 that power in that small of a thing 00:04:16.160 --> 00:04:19.440 oh god that's heavy 00:04:21.120 --> 00:04:27.360 so this is going to be the real business end of the 00:04:24.880 --> 00:04:34.720 cnc that's good for three horsepower and 24 00:04:32.320 --> 00:04:37.680 000 RPM oh 00:04:35.680 --> 00:04:41.040 okay okay hey don't don't be a show-off i don't want you hurting yourself jeez 00:04:39.919 --> 00:04:47.040 yeah we're gonna have to move it too that'll be fun we're gonna need like six seven people 00:04:44.880 --> 00:04:51.840 to move this like comfortably oh yeah it's not gonna be a great time 00:04:50.160 --> 00:04:58.560 this end's not so bad but like is this all manual assembly like every 00:04:55.520 --> 00:05:00.479 one of these plates yeah 00:04:58.560 --> 00:05:03.600 how are their instructions really good i guess we should probably close that door 00:05:01.680 --> 00:05:08.960 everyone's being loud yeah guys we're filming here 00:05:06.639 --> 00:05:12.240 yeah the spindle on its own has a 2.2 kilowatt power supply 00:05:12.880 --> 00:05:18.880 what holy crap so to put that in perspective 00:05:17.360 --> 00:05:22.720 this motor consumes more power than even the 00:05:20.720 --> 00:05:28.240 beefiest gaming rig including its monitor and peripherals 00:05:24.800 --> 00:05:28.240 i'm gonna hit it and see what happens 00:05:31.280 --> 00:05:37.440 it's alive is this wood here because we're 00:05:35.120 --> 00:05:41.680 sacrificing it or no it's just a table this is okay 00:05:39.440 --> 00:05:44.880 really this is a table i would never have known that you had a 00:05:43.199 --> 00:05:50.240 table based on how many of the tools 00:05:46.639 --> 00:05:51.520 for this project ended up on the ground 00:05:50.240 --> 00:05:55.840 there's a little light that's turning on on this okay that's good i guess 00:05:54.400 --> 00:06:00.800 so the sensor is definitely working but i don't know if it's inputting into that 00:05:58.800 --> 00:06:03.840 i was like oh it'd be nice to see this stuff a bit big 00:06:02.240 --> 00:06:08.080 no so it turns out that if all we wanted to 00:06:05.600 --> 00:06:13.520 do was turn it on there was a switch that we needed to flip but that wasn't 00:06:10.560 --> 00:06:17.440 our biggest problem anyway so basically what we're doing here is i 00:06:15.759 --> 00:06:22.960 was an idiot and put the spindle and the whole gantry 00:06:20.240 --> 00:06:26.960 assembly on the wrong way so when it homes over here it's like a good foot 00:06:25.680 --> 00:06:30.639 off the table so we need to pick up this whole piece 00:06:28.880 --> 00:06:36.160 right here and flip it and that's why we have four 00:06:32.840 --> 00:06:37.600 dudes okay so one person just stop it 00:06:36.160 --> 00:06:40.319 from tilting all right that looks like me all right 00:06:39.280 --> 00:06:44.800 picking up the feather the feather forward okay all 00:06:43.039 --> 00:06:48.520 right do the twist which way anti-clockwise 00:06:51.600 --> 00:06:59.479 okay so i think me and john are going to have to hold it and you guys will have 00:06:55.120 --> 00:06:59.479 to go under oh my god 00:07:02.080 --> 00:07:08.240 okay watch fingers everybody 00:07:08.240 --> 00:07:14.880 now that everything is assembled correctly time to fire it up so now that it's all 00:07:13.120 --> 00:07:18.639 working let's take a look at our finished router now i'm sure many of you 00:07:17.120 --> 00:07:22.479 haven't seen one of these things in operation before 00:07:20.400 --> 00:07:27.120 how the heck does it cut things how does it get to one 00:07:24.800 --> 00:07:32.240 thousandth of an inch of cutting resolution basically 00:07:29.680 --> 00:07:37.360 code is sent from the computer here and then executed by the stepper motors 00:07:34.160 --> 00:07:38.639 which you'll find here here here and 00:07:37.360 --> 00:07:43.199 over there so those are the ones i alluded to earlier now 00:07:40.560 --> 00:07:48.639 a normal dc motor will rotate continuously when a voltage is applied 00:07:46.160 --> 00:07:53.199 more voltage means more faster which is great if you just want to go 00:07:51.039 --> 00:07:57.759 but it doesn't give you any control of the position 00:07:55.120 --> 00:08:02.879 stepper motors contain a stationary magnet attached to the output shaft with 00:08:00.240 --> 00:08:07.919 magnetic windings all around it so by energizing these electromagnets the 00:08:05.199 --> 00:08:11.919 internal magnet is attracted and aligns with them to move the motor one step the 00:08:10.400 --> 00:08:16.319 next set of electromagnets gets energized moving the shaft however far 00:08:13.919 --> 00:08:23.039 it is between electromagnets so our stepper motors have 200 electromagnets 00:08:20.240 --> 00:08:26.800 meaning that each full step is 1.8 degrees 00:08:24.080 --> 00:08:31.840 then that resolution can actually be doubled with half steps so that's where 00:08:29.440 --> 00:08:36.880 two electromagnets are energized to have the shaft move only half as far and then 00:08:34.320 --> 00:08:41.919 beyond that microstepping which relies on multiple electromagnets at different 00:08:38.880 --> 00:08:44.080 ratios can be used to further increase 00:08:41.919 --> 00:08:49.920 our resolution all of that lovely precision can be ruined though and very 00:08:46.560 --> 00:08:52.399 quickly by bad gears so right here we 00:08:49.920 --> 00:08:57.519 have a 3.2 to 1 gear reduction to increase our torque from five foot 00:08:54.480 --> 00:08:59.360 pounds to 16. this allows us to remove 00:08:57.519 --> 00:09:04.800 more material at a time but anytime there's gears involved 00:09:02.000 --> 00:09:10.880 backlash can quickly become an issue so backlash is the slop between two gears 00:09:08.720 --> 00:09:15.200 that causes a loss in precision when you reverse the direction experiencing 00:09:12.800 --> 00:09:18.880 something like this once in a run might only result in a couple thousandth of an 00:09:17.040 --> 00:09:23.519 inch of accuracy being lost but on a machine that will normally be changing 00:09:21.279 --> 00:09:26.720 direction hundreds of times while making a part 00:09:24.480 --> 00:09:32.000 all of those little errors would really add up so to combat this our gears are 00:09:29.760 --> 00:09:37.200 actually pre-loaded with a high stiffness spring right here this 00:09:35.120 --> 00:09:42.080 smashes the gears together preventing them from shifting about willy-nilly now 00:09:39.519 --> 00:09:45.680 of course our previous explanation of the instructions come from the computer 00:09:43.839 --> 00:09:49.279 wasn't exactly the best so let's take a closer look at where those 00:09:47.200 --> 00:09:53.760 come from because it's not quite as easy as just hitting 00:09:51.040 --> 00:09:58.720 go like on a 3d printer for some of our parts we'll use solidworks and hsm 00:09:55.920 --> 00:10:03.600 express to create the cad and toolpaths but we will also be using vcarve pro for 00:10:01.839 --> 00:10:09.760 other parts due to its greater ease of use in the software we end up having to 00:10:06.480 --> 00:10:12.160 define many parameters like how fast the 00:10:09.760 --> 00:10:14.720 router will cut for example we have to do this because 00:10:13.519 --> 00:10:19.920 well think about if you were using a handsaw 00:10:17.360 --> 00:10:24.560 you'd actually find yourself adjusting how fast you move your blade how hard 00:10:22.240 --> 00:10:30.160 you press and all kinds of little things intuitively based on how it feels 00:10:27.680 --> 00:10:34.720 but the thing is that this robot isn't going to back off if something's amiss 00:10:32.320 --> 00:10:39.040 and it will happily destroy a cutting tool or anything else in its way if you 00:10:37.519 --> 00:10:44.839 don't program it correctly that's actually one of the reasons that they have built-in safety stoppers that we 00:10:42.399 --> 00:10:49.680 have to wire up before we start doing anything so to make sure this doesn't 00:10:47.200 --> 00:10:53.600 happen the correct RPM for the cutter and how fast the spindle moves has to be 00:10:51.600 --> 00:10:58.480 calculated based on the force of the cutter from there those instructions are 00:10:56.160 --> 00:11:02.240 compiled and sent to the laptop that's connected to the router 00:11:00.480 --> 00:11:07.279 now down here we're running what's called mach3 which directly interfaces 00:11:04.959 --> 00:11:12.240 with the router and runs gcode a programming language for cnc machines 00:11:09.839 --> 00:11:16.720 and because this has all been pre-set up we should actually be able to just hit 00:11:14.160 --> 00:11:20.160 go once we are of course fully clear of the machine 00:11:18.079 --> 00:11:24.160 so right now what we're doing is we're giving it a known 00:11:22.000 --> 00:11:27.440 zero height is that correct yep okay cool 00:11:25.279 --> 00:11:31.760 i only know about these what my neighbor told me during scrapyard wars 2. next 00:11:29.600 --> 00:11:38.640 time it goes past and here it's going to be taking about a thou off so just clean 00:11:34.000 --> 00:11:38.640 this up are you ready yep boom 00:11:38.800 --> 00:11:44.399 i don't think what you're doing is really helping 00:11:42.880 --> 00:11:54.160 you might as well just get that out of there 00:11:54.160 --> 00:12:00.079 this poor laptop well hold on hold on at least get a shot 00:11:58.640 --> 00:12:03.600 of it if it's going to suffer it might as well all right go ahead 00:12:05.120 --> 00:12:11.680 well no don't scrape it back over it doesn't seem quite so you go through 00:12:09.279 --> 00:12:15.440 with the big bit yeah you get most of it done and then you come in and do the 00:12:13.120 --> 00:12:20.800 fine details got it the smaller one beautiful so where's our smaller bit 00:12:17.839 --> 00:12:20.800 uh it's in here 00:12:23.360 --> 00:12:29.120 and this is safe to just go right in there yep that's considered 00:12:27.680 --> 00:12:32.959 safe practice i want to make sure whatever we're doing in this video is what you're supposed to 00:12:32.000 --> 00:12:40.480 do it's pretty close okay 00:12:36.720 --> 00:12:43.040 yeah we definitely clearly need a better 00:12:40.480 --> 00:12:46.160 material capture solution here so is this the last thing on your wish list 00:12:44.880 --> 00:12:49.279 because this is one of the things you've been trying to get me to get since you 00:12:48.000 --> 00:12:54.560 started a metal lathe would really top it off 00:12:52.959 --> 00:12:58.720 and a tig welder we're at the point now where we can basically make anything out of acrylic 00:12:57.760 --> 00:13:03.760 though oh yeah okay 00:13:01.519 --> 00:13:06.720 or like any plastic like our dust collector is gonna be made out 00:13:05.279 --> 00:13:12.320 of this guy oh okay wow uh that sounds heavy 00:13:10.959 --> 00:13:16.240 is it considered safe for me to just reach in and grab this yep well you 00:13:14.240 --> 00:13:19.200 can't pick it up i can't oh it's double-sided taped down yeah what the 00:13:18.240 --> 00:13:23.279 crap uh okay i think we need to use not that 00:13:21.839 --> 00:13:27.279 gopro tape because this is ridiculous 00:13:25.519 --> 00:13:30.480 that stuff like how much did you use you could have used just like a tiny amount 00:13:28.959 --> 00:13:35.839 of it the world's most spectacular 00:13:33.279 --> 00:13:39.440 you put that much on yeah well i could have told you that was 00:13:37.600 --> 00:13:43.440 gonna happen yeah it broke wait no it didn't it did 00:13:42.000 --> 00:13:45.839 oh this is just some cleanup that we need to do 00:13:46.000 --> 00:13:52.959 yeah you could have put like this much times four or five and it wouldn't have 00:13:50.399 --> 00:13:58.240 gone anywhere and that my friends 00:13:55.360 --> 00:14:03.279 is about how this whole thing goes down so it does take a little bit of cleanup 00:13:59.920 --> 00:14:05.440 to get it uh to you know quite this 00:14:03.279 --> 00:14:10.320 stage but surely you guys can kind of see how we get there so 00:14:07.760 --> 00:14:13.600 we are to say we're really excited to make some crazy things with this would 00:14:12.160 --> 00:14:16.959 be a gross understatement 00:14:15.440 --> 00:14:20.639 we do still have a little bit of work to do before we can really go ham like 00:14:18.720 --> 00:14:25.920 there's the dust collector that is highly necessary um we're going 00:14:24.079 --> 00:14:28.959 to attach that to the cutting head and we're going to be making a spoil board 00:14:27.519 --> 00:14:32.959 that goes on the table for easier mounting 00:14:30.800 --> 00:14:36.000 but we're well underway and that's pretty much it for this so huge thanks 00:14:34.399 --> 00:14:41.600 to nathan from cnc router parts for sending this guy over and to rod from bs 00:14:39.120 --> 00:14:45.360 mods for giving us some extra advice and big thanks in advance to you 00:14:43.680 --> 00:14:48.959 for the awesome suggestions that you'll be leaving in the comments for projects 00:14:47.279 --> 00:14:53.600 that you guys want to see while you're at it by the way we actually need a name for our friend here 00:14:51.760 --> 00:14:58.399 because uh that joke at the beginning of this video um the router video hahaha 00:14:56.800 --> 00:15:02.800 get it well it's actually really confusing referring to this as the 00:15:00.079 --> 00:15:07.360 router around here so the top upvoted name in the comments below we're going 00:15:04.720 --> 00:15:13.360 to cut out a sign with that name we're going to mount it to the machine have 00:15:09.040 --> 00:15:15.279 fun the massdrop xakg k7xx red edition 00:15:13.360 --> 00:15:19.680 open-backed headphones featured their predecessor's legendary sound and build 00:15:17.440 --> 00:15:24.240 quality which were both big hits with the audiophile community and some 00:15:21.839 --> 00:15:28.079 additional tweaks the highs were boosted by an innovative flat wire voice coil 00:15:26.639 --> 00:15:31.680 the mids were brought up to better balance the range and the lows were 00:15:29.920 --> 00:15:35.760 raised by three decibels for an immersive sound this collaborative 00:15:33.600 --> 00:15:39.440 design between mass drop and akg includes a custom ruby red colorway to 00:15:38.000 --> 00:15:44.480 help the aesthetic really pop from the competition as well as a 10 foot detachable cable 00:15:42.880 --> 00:15:47.839 check them out now at the link in the video description 00:15:46.320 --> 00:15:51.680 so thanks again for watching guys if you disliked this video you can hit that button but if you liked it hit like get 00:15:50.480 --> 00:15:55.839 subscribed or maybe consider checking out where to buy the stuff we featured at the link in the video description 00:15:54.399 --> 00:15:58.639 also down there is our merch store which has cool shirts like this one and our 00:15:57.519 --> 00:16:02.040 community forum which you should definitely join