0:00:02.850,0:00:05.910
[shutters opening, light switch clicking]

0:00:07.300,0:00:10.480
Let's clean up this mess![br][clap clap clap clap]

0:00:10.480,0:00:12.730
Road to no compromise vibraphone!

0:00:12.730,0:00:14.420
[cheering sample] [clap][br][♪ unreleased/Work ♪]

0:00:14.420,0:00:19.570
Check this out: These are the 22 Matrix Sentinel [br]marble gates for the new vibraphone drops.

0:00:19.570,0:00:24.900
In the last episode I built this vibraphone drop system [br]with all the metal rails.

0:00:24.900,0:00:27.010
[MMX playing a vibraphone scale]

0:00:27.010,0:00:32.300
And then I took the angle grinder and [br]just removed like ten days work.

0:00:32.300,0:00:37.700
In this video I will explain to you exactly [br]why I needed to make this redesign.

0:00:37.710,0:00:40.919
But before I explain that, I'm so excited [br]to actually start to build this,

0:00:40.920,0:00:43.900
so let's make some plywood pieces on the CNC.

0:00:43.900,0:00:47.925
Ever since I came up with matrix sentinels [br]for the drums of the Marble Machine X,

0:00:47.925,0:00:52.160
I have been toying with the idea to [br]use them for the vibraphone as well.

0:00:52.160,0:00:54.700
It took me a day to design this assembly in CAD,

0:00:54.700,0:00:58.980
and it consists of laser-cut metal parts [br]and CNC cut plywood parts.

0:00:58.980,0:01:04.439
I'm going to start making these marble shuttles, [br]that feeds a marble every time a note is played.

0:01:04.439,0:01:07.209
[music continues]

0:01:09.260,0:01:11.620
[boom]

0:01:13.400,0:01:18.220
When I was at ThinkerCon in Alabama [br]I met my maker idol Frank Howard.

0:01:18.220,0:01:23.140
He has the same CNC machine as I have, and I [br]asked him what end mills he's using for plywood,

0:01:23.140,0:01:25.340
and he was: "compression bits".

0:01:25.540,0:01:30.750
I had never heard of these kinds of end mills before, [br]they're also called "up and down", and the special thing

0:01:30.750,0:01:34.000
is that the flute direction is changing [br]in the middle of the end mill.

0:01:34.152,0:01:38.620
So in the top of the end mill, it's cutting down,[br]and in the bottom, it's cutting up.

0:01:38.620,0:01:45.040
So on the top of the plywood the end mill will cut down, [br]and on the bottom of the plywood it will cut up,

0:01:45.040,0:01:47.480
which results in much less tear out.

0:01:47.480,0:01:52.480
Normally, I had a great finish on the top of the plywood, [br]but a little bit of tear out on the underside,

0:01:52.480,0:01:56.550
which is expected when you're using [br]the down cutters that I normally use.

0:01:56.550,0:01:59.440
I was really excited to see [br]if this made a difference.

0:01:59.960,0:02:02.560
[music continues]

0:02:10.000,0:02:12.090
[melody starts on vibraphone]

0:02:18.200,0:02:22.130
To cut into tight corners you need to use [br]a smaller diameter tool,

0:02:22.130,0:02:24.680
and I only have this up cutter for metal.

0:02:24.680,0:02:29.310
And you can actually see how it's leaving [br]a little bit of tear out on the top there.

0:02:29.310,0:02:31.660
Just because it's an up cutter.

0:02:31.660,0:02:34.220
[music continues]

0:02:39.260,0:02:46.720
At this moment I realized I forgot to pass for some unique [br]marble shutters that has a relief cut, to clear these washers.

0:02:46.720,0:02:52.780
I also saw that I had some interference on some relief cuts. [br]I needed to redesign them to make them longer.

0:02:52.900,0:02:58.940
And I checked the simulation for this extra cut very carefully, [br]to not ruin my already cut pieces.

0:02:59.080,0:03:04.160
Today me and the CNC machine were kind of best friends [br]and it did exactly what I asked it to do.

0:03:04.500,0:03:06.420
[music continues]

0:03:28.980,0:03:31.680
[part lands in box with a thud]

0:03:50.840,0:03:52.040
[music stops]

0:03:55.940,0:04:01.640
Okay, there's only one single operation left to do [br]for these marble shuttles before they're completed:

0:04:01.960,0:04:05.500
I need to pilot drill two holes for the L hooks.

0:04:05.840,0:04:09.609
And old Martin would just go to the [br]drill press and hope for the best,

0:04:09.960,0:04:14.080
but new Martin knows that when [br]you have a repetitive job like this;

0:04:14.120,0:04:16.780
to pilot drill 44 holes[br]- and I want them accurate -

0:04:16.900,0:04:20.280
it's better to invest some time in setting up the operation.

0:04:20.400,0:04:23.400
So I'm going to do this on the CNC machine,[br]do it properly.

0:04:23.620,0:04:30.700
I cut three locating slots with different tolerances [br]and found that the middle one had the perfect press fit.

0:04:30.780,0:04:37.980
And here I'm using a custom-made mallet that a [br]French maker and youtuber sent me: Olivier Verdier.

0:04:38.080,0:04:40.860
He has a fantastic channel, so check him out on YouTube!

0:04:40.860,0:04:46.700
It does feel very proper to locate these plywood pieces [br]with a custom plywood mallet.

0:04:47.060,0:04:51.500
Thank you, Olivier! I love the mallet, [br]and I love the "Puy lentils" as well.

0:05:13.030,0:05:18.740
Here I'm reaping the rewards from my upfront [br]time investment in making this into a CNC operation,

0:05:19.000,0:05:26.180
it's just to repeat the same tool path over and over [br]again, and the results are immaculate. Love it!

0:05:31.620,0:05:35.280
[laughing][br]Close!

0:05:35.280,0:05:39.080
[noises from the activities]

0:06:13.060,0:06:15.500
[Martin singing softly in Swedish:][br][♪ Allan Edvall: Du och jag ♪]

0:06:15.560,0:06:19.656
♪ Livet är en sand som i ett timglas rinner. ♪[br]("Life is the sand in an hourglass flowing.")

0:06:19.656,0:06:23.660
♪ Låt oss leva upp den lilla tid vi hinner. ♪[br]("Let us live the little time we are given.")

0:06:24.040,0:06:28.097
♪ Åh, du dyra liv som tynar och försvinner. ♪[br]("Oh, the precious life that fades and vanish.")

0:06:28.097,0:06:31.900
♪ Livet är en sand som i ett timglas rinner. ♪[br]("Life is the sand in an hourglass flowing.")

0:06:34.460,0:06:38.460
[bass beat start][br][♪ spring gang: You Left Behind ♪]

0:06:52.300,0:06:57.000
[arcade game achievement samples]

0:07:09.700,0:07:12.520
[music goes airy]

0:07:27.320,0:07:29.220
[bass reintroduced]

0:08:02.680,0:08:04.760
[arcade game achievement samples][br][music stops]

0:08:06.360,0:08:12.740
Me and Wilson has leveled up enough to take on [br]the mini-boss of the assembly; the bottom plywood part here.

0:08:12.820,0:08:19.520
You can see that it has a seven degree tilt, and that is because the [br]marble shuttles are moving perpendicular to the Marble Machine X.

0:08:19.600,0:08:22.660
But the vibraphone is mounted at a seven degree angle.

0:08:22.820,0:08:31.880
I started by drilling holes for M5 bolts and then I used a [br]ball-end cutter to cut these apple shaped marble grooves.

0:08:32.020,0:08:35.720
And then I used a two millimeter end mill [br]to cut the "internal walls" slot.

0:08:35.720,0:08:39.700
Those slots will separate the two marbles in each "apple".

0:08:39.840,0:08:46.740
Here I'm using a three millimeter bit to cut a thin groove for the [br]vertical L hook that will go straight through this plywood piece.

0:08:46.860,0:08:49.700
And I ran into a problem with this operation.

0:08:54.940,0:08:59.820
The wood chips had nowhere to go and they got [br]packed up and they broke off this little tool.

0:09:00.060,0:09:05.690
I tried redesigning the tool paths and using another tool, [br]but I ended up breaking that as well,

0:09:05.690,0:09:08.060
so I redesigned the tool paths again.

0:09:08.060,0:09:11.270
In the end I solved this by cutting only four millimeter deep,

0:09:11.270,0:09:16.140
and then pausing the machine and vacuum cleaning [br]out all the wood chips, out of the groove.

0:09:16.140,0:09:23.620
Then cutting four millimeter again, vacuum cleaning and then four [br]millimeter deeper and so on until I was through the whole plywood.

0:09:23.940,0:09:31.400
Definitely learned a lesson here to actually plan for proper [br]chip evacuation on tight operations like these.

0:09:31.600,0:09:36.560
Here I'm using that same compression bit, that I [br]talked about in the beginning of the video, again.

0:09:36.720,0:09:41.120
I'm cutting the larger internal slots, [br]and then I'm cutting the contour.

0:09:41.280,0:09:45.700
And I have to say it works so much better [br]than a straight down cutter.

0:09:45.700,0:09:47.900
The result is actually perfect!

0:09:47.900,0:09:53.750
There's no fraying or no tear out on the bottom of the plywood, [br]and that saves me a lot of sanding,

0:09:53.750,0:09:56.960
and just generally leaves a more professional-looking part.

0:09:59.640,0:10:01.240
[camera shutter sound]

0:10:05.400,0:10:10.780
I don't remember when I made those burn marks, [br]I must have welded on top of this plywood or something.

0:10:10.860,0:10:15.240
But they will be hidden inside this assembly, so no worries!

0:10:15.240,0:10:18.460
[woosh][br][♪ unreleased/Helping Out ♪]

0:10:34.980,0:10:37.587
On the top of the assembly we have these PMMA pipes,

0:10:37.587,0:10:42.320
and the marbles come through them [br]into this 20 degree wedge transition piece.

0:10:42.320,0:10:47.580
And looking at the top of the piece we can see that [br]we have spaced the holes to fit the PMMA pipes,

0:10:47.760,0:10:51.920
but when the marbles go through this transition wedge,[br]they go closer to each other,

0:10:51.920,0:10:57.460
which means that I have to split this piece [br]to be able to machine this shape on a 3-axis CNC machine.

0:10:57.860,0:11:04.300
If we look from the front you can clearly see how the[br]transition from the PMMA pipes goes narrower,

0:11:04.300,0:11:06.560
in through the top metal piece.

0:11:06.560,0:11:10.340
Setting up the tool paths for this operation [br]was by far the most complicated,

0:11:10.340,0:11:12.997
because I had to indicate the pieces correctly,

0:11:12.997,0:11:17.037
and I had to be able to turn them 90 degrees [br]and machine them from different sides.

0:11:17.640,0:11:23.620
I started by cutting the two long plywood rectangles. [br]I plan to use the resulting pockets for indication.

0:11:23.620,0:11:28.400
I forgot to hog out the radius in the corners [br]so I'm just doing that manually here.

0:11:28.400,0:11:33.820
And now you can see that my plywood rectangles can [br]indicate perfectly into the corner of the pocket.

0:11:34.580,0:11:42.990
By doing it this way, the machine knows exactly where my plywood [br]rectangles are situated and I can start the machining of the shapes.

0:11:43.620,0:11:46.720
[music continues]

0:11:55.480,0:12:01.240
I left rectangular blocks on the side of the piece so I can [br]take them out when I'm done machining from one side,

0:12:01.240,0:12:03.340
turn them exactly 90 degrees,

0:12:03.340,0:12:07.340
indicate them towards the same corner, [br]and run the next tool path;

0:12:07.340,0:12:09.765
machining from a completely new direction.

0:12:09.765,0:12:14.595
This way I can achieve the quote unquote "impossible shapes" [br]on this three axis CNC.

0:12:14.860,0:12:16.740
[music continues]

0:12:21.320,0:12:27.520
So in this little plywood wedge there are 22 marble paths [br]that go at a compound angle,

0:12:27.520,0:12:33.177
and I really love the challenge to try to [br]make these kind of difficult 3D shapes

0:12:33.177,0:12:35.877
on a three-axis CNC machine from plywood.

0:12:35.877,0:12:37.640
I think it's really fun.

0:12:37.640,0:12:40.020
[music continues]

0:12:48.620,0:12:49.660
[music stops]

0:12:49.660,0:12:53.340
When I first heard about CNC machines, [br]I thought they worked like this:

0:12:53.340,0:12:58.740
You put the machine in your workshop. [br]You put the power on and you press Start.

0:12:59.070,0:13:02.800
While the machine is making your perfect part, you do this:

0:13:03.010,0:13:04.760
[birds singing]

0:13:04.760,0:13:10.300
That is not the case, in my case.[br]It actually feels more like this:

0:13:10.380,0:13:14.440
[panic alarm]

0:13:14.540,0:13:20.120
There's a lot of manual labor, the machine is actually [br]really really stupid in itself.

0:13:20.260,0:13:25.000
If you tell it to do something, it will do it[br]even if it's a bad idea! [chuckles]

0:13:25.260,0:13:29.980
And to figure out what is a good or bad idea [br]is entirely on your shoulders.

0:13:29.980,0:13:34.930
But this is a specific rabbit hole that I [br]really love in the Marble Machine X process.

0:13:34.930,0:13:39.560
I never get tired of cutting [br]Baltic birch plywood on the CNC.

0:13:40.840,0:13:42.840
[marbles dropping]

0:13:45.920,0:13:48.700
[laughing]

0:13:48.700,0:13:50.700
Great!

0:13:53.000,0:13:58.000
We're done with the plywood parts [br]procurement of this assembly.

0:13:58.340,0:14:02.560
I have to wait for the metal parts from the laser cutting place

0:14:02.560,0:14:05.248
until we can put this together and put it on the machine.

0:14:05.248,0:14:08.360
In the beginning of time I made an assumption.

0:14:08.360,0:14:10.620
In engineering you should not assume anything.

0:14:10.800,0:14:16.880
My assumption was that a vibraphone bar wants to be hit [br]in the middle, so we designed these holders for that.

0:14:17.000,0:14:23.620
Then you guys helped out by posting brilliant comments [br]saying that there's better sound off center:

0:14:23.620,0:14:25.780
[vibraphone notes]

0:14:25.780,0:14:30.480
When this information reached me, we had [br]already made these vibraphone holders,

0:14:30.480,0:14:34.220
so I made a video showing [br]that I'm gonna do a compromise.

0:14:34.220,0:14:37.840
It was hitting closer to the sweet spot, [br]but not <i>at</i> the sweet spot.

0:14:37.840,0:14:39.838
But I thought that was going to be ok.

0:14:39.840,0:14:43.100
You guys again, were like [br]screaming in the comment field:

0:14:43.100,0:14:46.640
"Why don't you just shift the bars like this?" and I was like:

0:14:46.640,0:14:50.500
"Ah, no, the resonator pipe has to be centered", I thought.

0:14:50.760,0:14:54.820
And then I made a test and the resonator pipe [br]was super happy to be off center.

0:14:54.820,0:14:57.200
So even moving a centimeter from:

0:14:57.260,0:15:00.020
[vibraphone notes, on an off center]

0:15:00.020,0:15:03.430
The vibraphone is the lead singer [br]of the Marble Machine X band.

0:15:03.520,0:15:09.500
It requires very very special conditions [br]to perform. Basically a needy bastard.

0:15:09.510,0:15:13.610
I don't know if that is a trait for lead singers, but anyway...[br][chuckles]

0:15:14.680,0:15:19.240
I'm a needy bastard band leader myself,[br]I just don't sing.

0:15:19.280,0:15:24.506
Your suggestion proved to be absolutely, probably the best.

0:15:24.506,0:15:29.980
And I hope you understand why I assumed [br]what I assumed at the time.

0:15:29.980,0:15:34.620
And now when I have the whole picture [br]I can see this much more clearly.

0:15:34.940,0:15:39.280
The vibraphone was just screaming [br]for the matrix sentinels solution.

0:15:39.480,0:15:43.500
Thank you for commenting and [br]thanks for helping out with this build!

0:15:43.500,0:15:48.780
I'm really touched by the amazing support [br]from the crowdfunding campaign,

0:15:49.100,0:15:53.480
all the new Wintergatan backers who are supporting my dream.

0:15:53.480,0:15:58.620
I talk about it more and more, it's because it's growing [br]and becoming more and more important.

0:15:58.620,0:16:04.040
I can hire help around me:[br]It frees up my time to actually think

0:16:04.100,0:16:07.840
about just where a marble should[br]hit the vibraphone plate.

0:16:07.840,0:16:11.340
I could not live with this horrible harmonic!

0:16:11.340,0:16:16.830
When we could have a clean transient with a good fundamental

0:16:16.830,0:16:21.440
of the singer of the Marble Machine X.[br]Thank you for watching. See you in the next video!

0:16:22.220,0:16:23.220
[blows air]

0:16:23.850,0:16:25.550
[thud][br]What?

0:16:25.550,0:16:29.640
[fanfare playing]

0:16:30.400,0:16:34.520
[noise from trying to light the match]

0:16:39.580,0:16:41.580
[ignition spark]

0:16:45.920,0:16:47.920
Yay.[br][laughing]

0:16:48.160,0:16:51.260
The milestone I never wanted to reach, okay.

0:16:51.380,0:16:54.980
I just want to say seriously [br]thanks for following this journey.

0:16:54.980,0:16:58.480
Click like on this video if you believe [br]I can avoid episode thousand.

0:16:58.590,0:16:59.791
[blows air]

0:17:00.000,0:17:02.000
[vibraphone tone]