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[shutters opening, light switch clicking]
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00:00:07,300 --> 00:00:10,479
Let's clean up this mess!
[clap clap clap clap]
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00:00:10,480 --> 00:00:12,729
Road to no compromise vibraphone!
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00:00:12,730 --> 00:00:14,419
[cheering sample][clap]
[♪ unreleased/Work ♪]
5
00:00:14,420 --> 00:00:19,569
Check this out: These are the 22 Matrix Sentinel
marble gates for the new vibraphone drops.
6
00:00:19,570 --> 00:00:24,899
In the last episode I built this vibraphone drop system
with all the metal rails.
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00:00:24,900 --> 00:00:27,009
[MMX playing a vibraphone scale]
8
00:00:27,010 --> 00:00:32,299
And then I took the angle grinder and
just removed like ten days work.
9
00:00:32,300 --> 00:00:37,679
In this video I will explain to you exactly
why I needed to make this redesign.
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00:00:37,680 --> 00:00:41,078
But before I explain that, I'm so excited
to actually start to build this,
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00:00:41,079 --> 00:00:43,899
so let's make some plywood pieces on the CNC.
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00:00:43,900 --> 00:00:47,924
Ever since I came up with matrix sentinels
for the drums of the Marble Machine X,
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I have been toying with the idea to
use them for the vibraphone as well.
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It took me a day to design this assembly in CAD,
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00:00:54,700 --> 00:00:58,979
and it consists of laser-cut metal parts
and CNC cut plywood parts.
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I'm going to start making these marble shuttles,
that feeds a marble every time a note is played.
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[♫]
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[boom]
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00:01:13,400 --> 00:01:18,219
When I was at ThinkerCon in Alabama
I met my maker idol Frank Howarth.
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He has the same CNC machine as I have, and I
asked him what end mills he's using for plywood,
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00:01:23,140 --> 00:01:25,539
and he was: "compression bits".
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00:01:25,540 --> 00:01:30,749
I had never heard of these kinds of end mills before,
they're also called "up and down", and the special thing
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00:01:30,750 --> 00:01:34,159
is that the flute direction is changing
in the middle of the end mill.
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So in the top of the end mill, it's cutting down,
and in the bottom, it's cutting up.
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00:01:38,640 --> 00:01:45,039
So on the top of the plywood the end mill will cut down,
and on the bottom of the plywood it will cut up,
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00:01:45,040 --> 00:01:47,479
which results in much less tear out.
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00:01:47,480 --> 00:01:52,479
Normally, I had a great finish on the top of the plywood,
but a little bit of tear out on the underside,
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which is expected when you're using
the down cutters that I normally use.
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I was really excited to see
if this made a difference.
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[♫]
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00:02:10,000 --> 00:02:12,090
[melody starts on vibraphone]
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To cut into tight corners you need to use
a smaller diameter tool,
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00:02:22,130 --> 00:02:24,679
and I only have this up cutter for metal.
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00:02:24,680 --> 00:02:29,309
And you can actually see how it's leaving
a little bit of tear out on the top there.
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Just because it's an up cutter.
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[♫]
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At this moment I realized I forgot tooolpaths for
some unique marble shutters that has a relief cut,
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00:02:45,380 --> 00:02:46,919
to clear these washers.
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00:02:46,920 --> 00:02:50,239
I also saw that I had some
interference on some relief cuts.
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00:02:50,240 --> 00:02:52,899
I needed to redesign them to make them longer.
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00:02:52,900 --> 00:02:59,020
And I checked the simulation for this extra cut,
very carefully, to not ruin my already cut pieces.
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00:02:59,021 --> 00:03:04,160
Today me and the CNC machine were kind of best friends
and it did exactly what I asked it to do.
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[♫]
44
00:03:28,980 --> 00:03:31,680
[part lands in box with a thud]
45
00:03:50,840 --> 00:03:52,040
[music stops]
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00:03:55,940 --> 00:04:01,640
Okay, there's only one single operation left to do
for these marble shuttles before they're completed:
47
00:04:01,960 --> 00:04:05,500
I need to pilot drill two holes for the L hooks.
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00:04:05,840 --> 00:04:09,609
And old Martin would just go to the
drill press and hope for the best,
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00:04:09,960 --> 00:04:14,080
but new Martin knows that when
you have a repetitive job like this;
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00:04:14,120 --> 00:04:16,919
To pilot drill 44 holes;
And I want them accurate
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00:04:16,920 --> 00:04:20,279
it's better to invest some time
in setting up the operation.
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So I'm going to do this on the CNC machine,
do it properly.
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00:04:23,620 --> 00:04:30,700
I cut three locating slots with different tolerances
and found that the middle one had the perfect press fit.
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And here I'm using a custom-made mallet that a
French maker and youtuber sent me: Olivier Verdier.
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00:04:38,080 --> 00:04:40,859
He has a fantastic channel, so check him out on YouTube!
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It does feel very proper to locate these plywood pieces
with a custom plywood mallet.
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00:04:47,060 --> 00:04:51,500
Thank you, Olivier! I love the mallet,
and I love the "Puy lentils" as well.
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Here I'm reaping the rewards from my upfront
time investment in making this into a CNC operation,
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it's just to repeat the same tool path over and over
again, and the results are immaculate. Love it!
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[laughing]
Close!
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00:05:35,280 --> 00:05:39,080
[noises from the activities]
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00:06:05,840 --> 00:06:07,360
[air blowing]
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00:06:13,060 --> 00:06:15,500
[Martin singing softly in Swedish:]
[♪ Allan Edvall: Du och jag ♪]
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00:06:15,560 --> 00:06:19,655
♪ Livet är en sand som i ett timglas rinner. ♪
("Life is the sand in an hourglass flowing.")
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00:06:19,656 --> 00:06:23,660
♪ Låt oss leva upp den lilla tid vi hinner. ♪
("Let us live the little time we are given.")
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00:06:24,040 --> 00:06:28,096
♪ Åh, du dyra liv som tynar och försvinner. ♪
("Oh, the precious life that fades and vanish.")
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00:06:28,097 --> 00:06:31,900
♪ Livet är en sand som i ett timglas rinner. ♪
("Life is the sand in an hourglass flowing.")
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00:06:34,440 --> 00:06:42,440
[bass beat start]
[♪ Spring Gang: You Left Behind (Instrumental) ♪]
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00:06:52,300 --> 00:06:57,000
[arcade game achievement samples]
70
00:07:09,700 --> 00:07:12,520
[music goes airy]
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00:07:27,320 --> 00:07:29,220
[bass reintroduced]
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00:08:02,680 --> 00:08:06,639
[arcade game achievement samples]
[music stops]
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Me and Wilson has leveled up enough
to take on the mini-boss of the assembly;
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00:08:10,600 --> 00:08:12,919
The bottom plywood part here.
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00:08:12,920 --> 00:08:17,599
You can see that it has a seven degree tilt,
and that is because the marble shuttles
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00:08:17,600 --> 00:08:19,679
are moving perpendicular to the Marble Machine X.
77
00:08:19,680 --> 00:08:22,939
But the vibraphone is mounted at a seven degree angle.
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00:08:22,940 --> 00:08:26,499
I started by drilling holes for M5 bolts
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00:08:26,500 --> 00:08:31,699
and then I used a ball-end cutter
to cut these apple shaped marble grooves.
80
00:08:31,700 --> 00:08:35,759
And then I used a two millimeter end mill
to cut the "internal walls" slot.
81
00:08:35,760 --> 00:08:39,800
Those slots will separate the two marbles in each "apple".
82
00:08:39,801 --> 00:08:42,759
Here I'm using a three millimeter bit
to cut a thin groove
83
00:08:42,760 --> 00:08:46,999
for the vertical L hook that will go
straight through this plywood piece.
84
00:08:47,000 --> 00:08:49,679
And I ran into a problem with this operation.
85
00:08:49,680 --> 00:08:54,999
[CNC whirring]
[vacuum cleaner noise]
86
00:08:55,000 --> 00:08:59,880
The wood chips had nowhere to go and they got
packed up and they broke off this little tool.
87
00:09:00,060 --> 00:09:05,689
I tried redesigning the toolpaths and using another tool,
but I ended up breaking that as well,
88
00:09:05,690 --> 00:09:08,059
so I redesigned the tool paths again.
89
00:09:08,060 --> 00:09:11,269
In the end I solved this
by cutting only four millimeter deep,
90
00:09:11,270 --> 00:09:16,139
and then pausing the machine and vacuum cleaning
out all the wood chips, out of the groove.
91
00:09:16,140 --> 00:09:18,459
Then cutting four millimeter again,
92
00:09:18,460 --> 00:09:23,860
vacuum cleaning and then four millimeter deeper
and so on until I was through the whole plywood.
93
00:09:23,861 --> 00:09:31,580
Definitely learned a lesson here to actually plan for
proper chip evacuation on tight operations like these.
94
00:09:31,581 --> 00:09:36,879
Here I'm using that same compression bit,
that I talked about in the beginning of the video, again.
95
00:09:36,880 --> 00:09:41,280
I'm cutting the larger internal slots,
and then I'm cutting the contour.
96
00:09:41,280 --> 00:09:45,899
And I have to say it works so much better
than a straight down cutter.
97
00:09:45,900 --> 00:09:47,899
The result is actually perfect!
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00:09:47,900 --> 00:09:52,099
There's no fraying or no tear
out on the bottom of the plywood,
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00:09:52,100 --> 00:09:57,380
and that saves me a lot of sanding, and just
generally leaves a more professional-looking part.
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00:09:59,600 --> 00:10:01,200
[camera shutter click]
101
00:10:05,400 --> 00:10:10,859
I don't remember when I made those burn marks,
I must have welded on top of this plywood or something.
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But they will be hidden inside this assembly,
so no worries! [♫]
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00:10:15,240 --> 00:10:16,240
[whoosh]
104
00:10:16,241 --> 00:10:24,241
[♪ unreleased/Helping Out ♪]
105
00:10:32,567 --> 00:10:34,979
[music fades to background]
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00:10:34,980 --> 00:10:37,586
On the top of the assembly we have these PMMA pipes,
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00:10:37,587 --> 00:10:42,319
and the marbles come through them
into this 20 degree wedge transition piece.
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00:10:42,320 --> 00:10:47,759
And looking at the top of the piece we can see that
we have spaced the holes to fit the PMMA pipes,
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00:10:47,760 --> 00:10:51,919
but when the marbles go through this transition wedge,
they go closer to each other,
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00:10:51,920 --> 00:10:57,839
which means that I have to split this piece
to be able to machine this shape on a 3-axis CNC machine.
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00:10:57,840 --> 00:11:04,319
If we look from the front you can clearly see how the
transition from the PMMA pipes goes narrower,
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00:11:04,320 --> 00:11:06,559
in through the top metal piece.
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00:11:06,560 --> 00:11:10,339
Setting up the tool paths for this operation
was by far the most complicated,
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00:11:10,340 --> 00:11:12,996
because I had to indicate the pieces correctly,
115
00:11:12,997 --> 00:11:17,639
and I had to be able to turn them 90 degrees
and machine them from different sides.
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00:11:17,640 --> 00:11:23,619
I started by cutting the two long plywood rectangles.
I plan to use the resulting pockets for indication.
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00:11:23,620 --> 00:11:28,399
I forgot to hog out the radius in the corners
so I'm just doing that manually here.
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00:11:28,400 --> 00:11:33,920
And now you can see that my plywood rectangles can
indicate perfectly into the corner of the pocket.
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00:11:34,880 --> 00:11:40,639
By doing it this way, the machine knows
exactly where my plywood rectangles are situated
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00:11:40,640 --> 00:11:43,599
and I can start the machining of the shapes.
[CNC whining]
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00:11:43,600 --> 00:11:46,700
[music continues]
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00:11:55,480 --> 00:11:58,479
I left rectangular blocks
on the side of the piece
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00:11:58,480 --> 00:12:01,359
so I can take them out when
I'm done machining from one side,
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00:12:01,360 --> 00:12:03,339
turn them exactly 90 degrees,
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00:12:03,340 --> 00:12:07,239
indicate them towards the same corner,
and run the next tool path;
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00:12:07,240 --> 00:12:09,719
Machining from a completely new direction.
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00:12:09,720 --> 00:12:14,560
This way I can achieve the quote unquote
"impossible shapes" on this three axis CNC.
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00:12:14,860 --> 00:12:16,740
[music continues in foreground]
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00:12:21,320 --> 00:12:27,519
So in this little plywood wedge there are 22 marble paths
that go at a compound angle,
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00:12:27,520 --> 00:12:33,176
and I really love the challenge to try to
make these kind of difficult 3D shapes
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00:12:33,177 --> 00:12:35,876
on a three-axis CNC machine from plywood.
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00:12:35,877 --> 00:12:37,639
I think it's really fun.
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00:12:37,640 --> 00:12:40,020
[♫]
134
00:12:48,620 --> 00:12:49,659
[music stops]
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00:12:49,660 --> 00:12:53,339
When I first heard about CNC machines,
I thought they worked like this:
136
00:12:53,340 --> 00:12:58,740
You put the machine in your workshop.
You put the power on and you press Start.
137
00:12:59,070 --> 00:13:02,800
While the machine is making your perfect part,
you do this:
138
00:13:03,010 --> 00:13:04,759
[birds singing]
139
00:13:04,760 --> 00:13:10,300
That is not the case, in my case.
It actually feels more like this:
140
00:13:10,380 --> 00:13:14,440
[panic alarm]
141
00:13:14,540 --> 00:13:20,120
There's a lot of manual labor, the machine is actually
really really stupid in itself.
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00:13:20,260 --> 00:13:25,259
If you tell it to do something, it will do it
even if it's a bad idea! [chuckles]
143
00:13:25,260 --> 00:13:30,159
And to figure out what is a good or bad idea
is entirely on your shoulders.
144
00:13:30,160 --> 00:13:35,039
But this is a specific rabbit hole that I
really love in the Marble Machine X process.
145
00:13:35,040 --> 00:13:39,240
I never get tired of cutting
Baltic birch plywood on the CNC.
146
00:13:40,840 --> 00:13:42,840
[marbles dropping]
147
00:13:45,920 --> 00:13:48,699
[laughing]
148
00:13:48,700 --> 00:13:50,700
Great!
[marble rolls on the floor]
149
00:13:53,000 --> 00:13:58,000
We're done with the plywood parts procurement
of this assembly.
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00:13:58,520 --> 00:14:02,479
I have to wait for the metal parts
from the laser cutting place
151
00:14:02,480 --> 00:14:05,359
until we can put this together and put it on the machine.
152
00:14:05,360 --> 00:14:08,359
In the beginning of time I made an assumption.
153
00:14:08,360 --> 00:14:10,799
In engineering you should not assume anything.
154
00:14:10,800 --> 00:14:16,999
My assumption was that a vibraphone bar wants to be hit
in the middle, so we designed these holders for that.
155
00:14:17,000 --> 00:14:23,619
Then you guys helped out by posting brilliant comments
saying that there's better sound off center:
156
00:14:23,620 --> 00:14:25,779
[vibraphone notes]
157
00:14:25,780 --> 00:14:30,639
When this information reached me, we had
already made these vibraphone holders,
158
00:14:30,640 --> 00:14:34,239
so I made a video showing
that I'm gonna do a compromise.
159
00:14:34,240 --> 00:14:37,959
It was hitting closer to the sweet spot,
but not at the sweet spot.
160
00:14:37,960 --> 00:14:39,839
But I thought that was going to be ok.
161
00:14:39,840 --> 00:14:43,099
You guys again, were like
screaming in the comment field:
162
00:14:43,100 --> 00:14:46,639
"Why don't you just shift the bars like this?"
and I was like:
163
00:14:46,640 --> 00:14:50,500
"Ah, no, the resonator pipe has to be centered", I thought.
164
00:14:50,760 --> 00:14:54,819
And then I made a test and the resonator pipe
was super happy to be off center.
165
00:14:54,820 --> 00:14:57,200
So even moving a centimeter from:
166
00:14:57,260 --> 00:15:00,050
[vibraphone notes, on an off center]
167
00:15:00,051 --> 00:15:03,519
The vibraphone is the lead singer
of the Marble Machine X band.
168
00:15:03,520 --> 00:15:09,500
It requires very very special conditions
to perform. Basically a needy bastard.
169
00:15:09,510 --> 00:15:13,710
I don't know if that is a trait for lead singers,
but anyway... [chuckles]
170
00:15:14,680 --> 00:15:19,279
I'm a needy bastard band leader myself,
I just don't sing.
171
00:15:19,280 --> 00:15:24,705
Your suggestion proved to be absolutely,
probably the best.
172
00:15:24,706 --> 00:15:29,979
And I hope you understand why I assumed
what I assumed at the time.
173
00:15:29,980 --> 00:15:34,939
And now when I have the whole picture
I can see this much more clearly.
174
00:15:34,940 --> 00:15:39,479
The vibraphone was just screaming
for the matrix sentinels solution.
175
00:15:39,480 --> 00:15:43,499
Thank you for commenting and
thanks for helping out with this build!
176
00:15:43,500 --> 00:15:48,780
I'm really touched by the amazing support
from the crowdfunding campaign,
177
00:15:49,100 --> 00:15:53,479
all the new Wintergatan backers
who are supporting my dream.
178
00:15:53,480 --> 00:15:58,439
I talk about it more and more, it's because it's growing
and becoming more and more important.
179
00:15:58,440 --> 00:16:02,599
I can hire help around me:
It frees up my time
180
00:16:02,600 --> 00:16:04,799
to actually think about
181
00:16:04,800 --> 00:16:07,719
just where a marble should hit the vibraphone plate.
182
00:16:07,720 --> 00:16:11,339
I could not live with this horrible harmonic!
183
00:16:11,340 --> 00:16:16,829
When we could have
a clean transient with a good fundamental
184
00:16:16,830 --> 00:16:19,099
of the singer of the Marble Machine X.
185
00:16:19,100 --> 00:16:21,500
Thank you for watching. See you in the next video!
186
00:16:22,220 --> 00:16:23,220
[blows air]
187
00:16:23,850 --> 00:16:25,549
[thud]
What?
188
00:16:25,550 --> 00:16:29,700
[fanfare playing]
189
00:16:30,400 --> 00:16:34,520
[scratching sounds from lighting a match]
190
00:16:39,580 --> 00:16:41,580
[ignition spark]
191
00:16:45,920 --> 00:16:47,920
Yay.
[laughing]
192
00:16:48,160 --> 00:16:51,260
The milestone I never wanted to reach, okay.
193
00:16:51,380 --> 00:16:54,979
I just want to say seriously
thanks for following this journey.
194
00:16:54,980 --> 00:16:58,480
Click like on this video if you believe
I can avoid episode thousand.
195
00:16:58,590 --> 00:16:59,791
[blows air]
196
00:16:59,859 --> 00:17:02,851
[vibraphone tone]
// Subtitled by Wintergatan Writers. Join our team on discord. //