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

0:00:07.300,0:00:10.479
Let's clean up this mess![br][clap clap clap clap]

0:00:10.480,0:00:12.729
Road to no compromise vibraphone!

0:00:12.730,0:00:14.419
[cheering sample][clap][br][♪ unreleased/Work ♪]

0:00:14.420,0:00:19.569
Check this out: These are the 22 Matrix Sentinel[br]marble gates for the new vibraphone drops.

0:00:19.570,0:00:24.899
In the last episode I built this vibraphone drop system[br]with all the metal rails.

0:00:24.900,0:00:27.009
[MMX playing a vibraphone scale]

0:00:27.010,0:00:32.299
And then I took the angle grinder and[br]just removed like ten days work.

0:00:32.300,0:00:37.679
In this video I will explain to you exactly[br]why I needed to make this redesign.

0:00:37.680,0:00:41.078
But before I explain that, I'm so excited[br]to actually start to build this,

0:00:41.079,0:00:43.899
so let's make some plywood pieces on the CNC.

0:00:43.900,0:00:47.924
Ever since I came up with matrix sentinels[br]for the drums of the Marble Machine X,

0:00:47.925,0:00:52.159
I have been toying with the idea to[br]use them for the vibraphone as well.

0:00:52.160,0:00:54.699
It took me a day to design this assembly in CAD,

0:00:54.700,0:00:58.979
and it consists of laser-cut metal parts[br]and CNC cut plywood parts.

0:00:58.980,0:01:04.438
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
[♫]

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

0:01:13.400,0:01:18.219
When I was at ThinkerCon in Alabama[br]I met my maker idol Frank Howarth.

0:01:18.220,0:01:23.139
He has the same CNC machine as I have, and I[br]asked him what end mills he's using for plywood,

0:01:23.140,0:01:25.539
and he was: "compression bits".

0:01:25.540,0:01:30.749
I had never heard of these kinds of end mills before,[br]they're also called "up and down", and the special thing

0:01:30.750,0:01:34.159
is that the flute direction is changing[br]in the middle of the end mill.

0:01:34.160,0:01:38.639
So in the top of the end mill, it's cutting down,[br]and in the bottom, it's cutting up.

0:01:38.640,0:01:45.039
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,

0:01:45.040,0:01:47.479
which results in much less tear out.

0:01:47.480,0:01:52.479
Normally, I had a great finish on the top of the plywood,[br]but a little bit of tear out on the underside,

0:01:52.480,0:01:56.549
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
[♫]

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

0:02:18.200,0:02:22.129
To cut into tight corners you need to use[br]a smaller diameter tool,

0:02:22.130,0:02:24.679
and I only have this up cutter for metal.

0:02:24.680,0:02:29.309
And you can actually see how it's leaving[br]a little bit of tear out on the top there.

0:02:29.310,0:02:31.659
Just because it's an up cutter.

0:02:31.660,0:02:34.220
[♫]

0:02:39.260,0:02:45.379
At this moment I realized I forgot tooolpaths for[br]some unique marble shutters that has a relief cut,

0:02:45.380,0:02:46.919
to clear these washers.

0:02:46.920,0:02:50.239
I also saw that I had some[br]interference on some relief cuts.

0:02:50.240,0:02:52.899
I needed to redesign them to make them longer.

0:02:52.900,0:02:59.020
And I checked the simulation for this extra cut,[br]very carefully, to not ruin my already cut pieces.

0:02:59.021,0:03:04.160
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
[♫]

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;

0:04:14.120,0:04:16.919
To pilot drill 44 holes;[br]And I want them accurate

0:04:16.920,0:04:20.279
it's better to invest some time[br]in setting up the operation.

0:04:20.280,0:04:23.400
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.

0:04:38.080,0:04:40.859
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!

0:05:31.620,0:05:35.279
[laughing][br]Close!

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

0:06:05.840,0:06:07.360
[air blowing]

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

0:06:15.560,0:06:19.655
♪ 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.")

0:06:24.040,0:06:28.096
♪ 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.")

0:06:34.440,0:06:42.440
[bass beat start][br][♪ Spring Gang: You Left Behind (Instrumental) ♪]

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]

0:08:02.680,0:08:06.639
[arcade game achievement samples][br][music stops]

0:08:06.640,0:08:10.599
Me and Wilson has leveled up enough[br]to take on the mini-boss of the assembly;

0:08:10.600,0:08:12.919
The bottom plywood part here.

0:08:12.920,0:08:17.599
You can see that it has a seven degree tilt,[br]and that is because the marble shuttles

0:08:17.600,0:08:19.679
are moving perpendicular to the Marble Machine X.

0:08:19.680,0:08:22.939
But the vibraphone is mounted at a seven degree angle.

0:08:22.940,0:08:26.499
I started by drilling holes for M5 bolts

0:08:26.500,0:08:31.699
and then I used a ball-end cutter[br]to cut these apple shaped marble grooves.

0:08:31.700,0:08:35.759
And then I used a two millimeter end mill[br]to cut the "internal walls" slot.

0:08:35.760,0:08:39.800
Those slots will separate the two marbles in each "apple".

0:08:39.801,0:08:42.759
Here I'm using a three millimeter bit[br]to cut a thin groove

0:08:42.760,0:08:46.999
for the vertical L hook that will go[br]straight through this plywood piece.

0:08:47.000,0:08:49.679
And I ran into a problem with this operation.

0:08:49.680,0:08:54.999
[CNC whirring][br][vacuum cleaner noise]

0:08:55.000,0:08:59.880
The wood chips had nowhere to go and they got[br]packed up and they broke off this little tool.

0:09:00.060,0:09:05.689
I tried redesigning the toolpaths and using another tool,[br]but I ended up breaking that as well,

0:09:05.690,0:09:08.059
so I redesigned the tool paths again.

0:09:08.060,0:09:11.269
In the end I solved this[br]by cutting only four millimeter deep,

0:09:11.270,0:09:16.139
and then pausing the machine and vacuum cleaning[br]out all the wood chips, out of the groove.

0:09:16.140,0:09:18.459
Then cutting four millimeter again,

0:09:18.460,0:09:23.860
vacuum cleaning and then four millimeter deeper[br]and so on until I was through the whole plywood.

0:09:23.861,0:09:31.580
Definitely learned a lesson here to actually plan for[br]proper chip evacuation on tight operations like these.

0:09:31.581,0:09:36.879
Here I'm using that same compression bit,[br]that I talked about in the beginning of the video, again.

0:09:36.880,0:09:41.280
I'm cutting the larger internal slots,[br]and then I'm cutting the contour.

0:09:41.280,0:09:45.899
And I have to say it works so much better[br]than a straight down cutter.

0:09:45.900,0:09:47.899
The result is actually perfect!

0:09:47.900,0:09:52.099
There's no fraying or no tear[br]out on the bottom of the plywood,

0:09:52.100,0:09:57.380
and that saves me a lot of sanding, and just[br]generally leaves a more professional-looking part.

0:09:59.600,0:10:01.200
[camera shutter click]

0:10:05.400,0:10:10.859
I don't remember when I made those burn marks,[br]I must have welded on top of this plywood or something.

0:10:10.860,0:10:15.239
But they will be hidden inside this assembly,[br]so no worries! [♫]

0:10:15.240,0:10:16.240
[whoosh]

0:10:16.241,0:10:24.241
[♪ unreleased/Helping Out ♪]

0:10:32.567,0:10:34.979
[music fades to background]

0:10:34.980,0:10:37.586
On the top of the assembly we have these PMMA pipes,

0:10:37.587,0:10:42.319
and the marbles come through them[br]into this 20 degree wedge transition piece.

0:10:42.320,0:10:47.759
And looking at the top of the piece we can see that[br]we have spaced the holes to fit the PMMA pipes,

0:10:47.760,0:10:51.919
but when the marbles go through this transition wedge,[br]they go closer to each other,

0:10:51.920,0:10:57.839
which means that I have to split this piece[br]to be able to machine this shape on a 3-axis CNC machine.

0:10:57.840,0:11:04.319
If we look from the front you can clearly see how the[br]transition from the PMMA pipes goes narrower,

0:11:04.320,0:11:06.559
in through the top metal piece.

0:11:06.560,0:11:10.339
Setting up the tool paths for this operation[br]was by far the most complicated,

0:11:10.340,0:11:12.996
because I had to indicate the pieces correctly,

0:11:12.997,0:11:17.639
and I had to be able to turn them 90 degrees[br]and machine them from different sides.

0:11:17.640,0:11:23.619
I started by cutting the two long plywood rectangles.[br]I plan to use the resulting pockets for indication.

0:11:23.620,0:11:28.399
I forgot to hog out the radius in the corners[br]so I'm just doing that manually here.

0:11:28.400,0:11:33.920
And now you can see that my plywood rectangles can[br]indicate perfectly into the corner of the pocket.

0:11:34.880,0:11:40.639
By doing it this way, the machine knows[br]exactly where my plywood rectangles are situated

0:11:40.640,0:11:43.599
and I can start the machining of the shapes.[br][CNC whining]

0:11:43.600,0:11:46.700
[music continues]

0:11:55.480,0:11:58.479
I left rectangular blocks[br]on the side of the piece

0:11:58.480,0:12:01.359
so I can take them out when[br]I'm done machining from one side,

0:12:01.360,0:12:03.339
turn them exactly 90 degrees,

0:12:03.340,0:12:07.239
indicate them towards the same corner,[br]and run the next tool path;

0:12:07.240,0:12:09.719
Machining from a completely new direction.

0:12:09.720,0:12:14.560
This way I can achieve the quote unquote[br]"impossible shapes" on this three axis CNC.

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

0:12:21.320,0:12:27.519
So in this little plywood wedge there are 22 marble paths[br]that go at a compound angle,

0:12:27.520,0:12:33.176
and I really love the challenge to try to[br]make these kind of difficult 3D shapes

0:12:33.177,0:12:35.876
on a three-axis CNC machine from plywood.

0:12:35.877,0:12:37.639
I think it's really fun.

0:12:37.640,0:12:40.020
[♫]

0:12:48.620,0:12:49.659
[music stops]

0:12:49.660,0:12:53.339
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,[br]you do this:

0:13:03.010,0:13:04.759
[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.

0:13:20.260,0:13:25.259
If you tell it to do something, it will do it[br]even if it's a bad idea! [chuckles]

0:13:25.260,0:13:30.159
And to figure out what is a good or bad idea[br]is entirely on your shoulders.

0:13:30.160,0:13:35.039
But this is a specific rabbit hole that I[br]really love in the Marble Machine X process.

0:13:35.040,0:13:39.240
I never get tired of cutting[br]Baltic birch plywood on the CNC.

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

0:13:45.920,0:13:48.699
[laughing]

0:13:48.700,0:13:50.700
Great![br][marble rolls on the floor]

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

0:13:58.520,0:14:02.479
I have to wait for the metal parts[br]from the laser cutting place

0:14:02.480,0:14:05.359
until we can put this together and put it on the machine.

0:14:05.360,0:14:08.359
In the beginning of time I made an assumption.

0:14:08.360,0:14:10.799
In engineering you should not assume anything.

0:14:10.800,0:14:16.999
My assumption was that a vibraphone bar wants to be hit[br]in the middle, so we designed these holders for that.

0:14:17.000,0:14:23.619
Then you guys helped out by posting brilliant comments[br]saying that there's better sound off center:

0:14:23.620,0:14:25.779
[vibraphone notes]

0:14:25.780,0:14:30.639
When this information reached me, we had[br]already made these vibraphone holders,

0:14:30.640,0:14:34.239
so I made a video showing[br]that I'm gonna do a compromise.

0:14:34.240,0:14:37.959
It was hitting closer to the sweet spot,[br]but not <i>at</i> the sweet spot.

0:14:37.960,0:14:39.839
But I thought that was going to be ok.

0:14:39.840,0:14:43.099
You guys again, were like[br]screaming in the comment field:

0:14:43.100,0:14:46.639
"Why don't you just shift the bars like this?"[br]and I was like:

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

0:14:50.760,0:14:54.819
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:

0:14:57.260,0:15:00.050
[vibraphone notes, on an off center]

0:15:00.051,0:15:03.519
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.

0:15:09.510,0:15:13.710
I don't know if that is a trait for lead singers,[br]but anyway... [chuckles]

0:15:14.680,0:15:19.279
I'm a needy bastard band leader myself,[br]I just don't sing.

0:15:19.280,0:15:24.705
Your suggestion proved to be absolutely,[br]probably the best.

0:15:24.706,0:15:29.979
And I hope you understand why I assumed[br]what I assumed at the time.

0:15:29.980,0:15:34.939
And now when I have the whole picture[br]I can see this much more clearly.

0:15:34.940,0:15:39.479
The vibraphone was just screaming[br]for the matrix sentinels solution.

0:15:39.480,0:15:43.499
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,

0:15:49.100,0:15:53.479
all the new Wintergatan backers[br]who are supporting my dream.

0:15:53.480,0:15:58.439
I talk about it more and more, it's because it's growing[br]and becoming more and more important.

0:15:58.440,0:16:02.599
I can hire help around me:[br]It frees up my time

0:16:02.600,0:16:04.799
to actually think about

0:16:04.800,0:16:07.719
just where a marble should hit the vibraphone plate.

0:16:07.720,0:16:11.339
I could not live with this horrible harmonic!

0:16:11.340,0:16:16.829
When we could have[br]a clean transient with a good fundamental

0:16:16.830,0:16:19.099
of the singer of the Marble Machine X.

0:16:19.100,0:16:21.500
Thank you for watching. See you in the next video!

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

0:16:23.850,0:16:25.549
[thud][br]What?

0:16:25.550,0:16:29.700
[fanfare playing]

0:16:30.400,0:16:34.520
[scratching sounds from lighting a 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.

0:16:51.380,0:16:54.979
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]

0:16:59.859,0:17:02.851
[vibraphone tone][br]// Subtitled by Wintergatan Writers. Join our team on discord. //