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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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Posted: Sun Apr 17, 2011 6:27 am Post subject:
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This is the first weekend in awhile that I haven't felt like my head was going to explode, so I got almost everything dimensioned down to 3/4" thickness yesterday. For the two internal shelves, I don't want to use $$$ walnut -- the only part that will be visible is the leading edge, so I'm gluing a walnut strip onto a pine board. I'll plane the pine down to final thickness today so the strip matches exactly.
_________________ MFOS Ultimate Expand-o-tron Build Log: http://www.electro-music.com/forum/post-308797.html#308797
MFOS Mini-Controller Build Log [FINISHED!]: http://www.electro-music.com/forum/topic-42968.html |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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iopop3
Joined: May 28, 2010 Posts: 94 Location: Malmö, Sweden
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Posted: Thu Jun 16, 2011 10:44 pm Post subject:
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Really nice to see that you are working on this again. Looking forward to see how your cabinet will end up like.
Somehow this thread contributed to my decision to get a Ultimate + Expander. Both are stuffed since a few months ago as well as the 16 step sequencer. My current excuse for not wrapping it up is that I'll move next month and a few pcbs needs less space than a complete cab. Will have the Ultimate + Expander as one complete unit, and the sequencer as a 5U module. |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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sompost
Joined: Aug 17, 2010 Posts: 58 Location: Switzerland
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Posted: Sat Jun 18, 2011 12:35 am Post subject:
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Isn't the C6 position right next to the R25 resistor where you could have soldered the 470pF capacitor in? I can just about see it on your photo. There's no need to piggyback it on the revision 2 boards. Just askin'....
Cheers, and great photo blog!
PS: I'm about to finish my own SoundLab U+E soon, and am looking forward to posting pictures. _________________ Built: MFOS SLMS plus, SL Ultimate & Expander, 10 step seq; SLMS MkII; PAiA FatMan, Mutable-Instruments Shruthi-1; Jasper Wasp Clone
Building: Maddox MonoWave; Auduino; ASM-2; Minimoog Clone
Backlogging: MFOS 16 step seq; TH SN Voice; Takeda One Board Farm; Okita Vocoder; Page TR-9090; TH GM Voice, AY Voice |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
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Posted: Mon Jun 20, 2011 5:44 pm Post subject:
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Keep on loydb - watching with interest... _________________ www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963) |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
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Posted: Thu Jun 23, 2011 6:37 pm Post subject:
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Props! That was the most painful part of the build to me. _________________ www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963) |
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iopop3
Joined: May 28, 2010 Posts: 94 Location: Malmö, Sweden
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Posted: Fri Jun 24, 2011 1:53 am Post subject:
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I usually find stuffing resistors a rather relaxing experience but on both the Ultimate and Expander it felt like too many and became stressful. |
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ashleym
Joined: Aug 20, 2009 Posts: 181 Location: uk
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Posted: Sat Jun 25, 2011 7:43 am Post subject:
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I agree with all above, this is consistently good work. As ever jealous of the wood working kit.
For some of the less regular values Ray chose I ended up using Welwyn resistors. The range I used have plain black bodies and the value printed on them numerically. These make the board look very neat, no endless stripes.
Resistors are one thing but what gets me is the board to pot and socket wiring. I ended up wiring and cable tying rather than other peoples twisted groups that look a lot better. That is my only issue with the 2 PCBs, I would have preferred a design that allowed PCB plugs to be used. I am sure this would mean a larger more expensive board but I feel we would gain a lot in trouble shooting and keeping our Ultimates/Expanders looking good and working. |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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Posted: Mon Jul 04, 2011 6:16 am Post subject:
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A note to anyone building an Expander -- the Mouser BOM on MFOS has an incorrect part. The 10 uF non-polarized aluminum capacitor for C38 is a normal polarized cap in the Mouser cart. I emailed Ray, he's changing it, but if you get to the end and wonder why you're missing a piece when you thought you ordered everything, that's why _________________ MFOS Ultimate Expand-o-tron Build Log: http://www.electro-music.com/forum/post-308797.html#308797
MFOS Mini-Controller Build Log [FINISHED!]: http://www.electro-music.com/forum/topic-42968.html |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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Posted: Thu Jul 28, 2011 3:41 pm Post subject:
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Back to the woodworking portion of things. It's 112 degrees in my shop today.
First up are the Walnut boards for the case exterior. I won't cut them to final size until I finish the face frame (the rest of the pics). Like I did on my mini-controller (see signature), I'm going to use Ebony as the accent wood. The biggest part will be a face frame that will surround the synth front panels. You can see the before and after from resawing the board in half on the bandsaw. This gave me a pair of matching pieces that I cut into 3/4" strips. I cut them slightly oversize so that I could use a jointer on the edges.
I then used a small thickness sander (made for model shipbuilders to dimension planking lumber) to remove the bandsaw marks on the final strips (you can see the marks the bandsaw left on the opened bookmatch).
_________________ MFOS Ultimate Expand-o-tron Build Log: http://www.electro-music.com/forum/post-308797.html#308797
MFOS Mini-Controller Build Log [FINISHED!]: http://www.electro-music.com/forum/topic-42968.html |
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diablojoy
Joined: Sep 07, 2008 Posts: 809 Location: melbourne australia
Audio files: 11
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Posted: Thu Jul 28, 2011 4:55 pm Post subject:
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Quote: | It's 112 degrees in my shop today. |
damn thats not nice to work in thankfully we dont get those temps here very often, only a few days each year
very nice plank of macassar ebony i can see no obvious faults in that piece
last price i got on that stuff was ridiculous and what was on offer was no good for fret boards, too many shakes
swapped to using cocobolo for fret boards for a while but that too has become unobtainium now .I only have a small quantity left
don't know what i will use once its gone.
more than a little jealous of that mini thickness sander you have there
I have to do that sort of thing by hand .
good idea with the dust extraction too , sanding ebony is really bad
really like seeing this progress, nice thread |
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loydb
Joined: Feb 04, 2010 Posts: 393 Location: Providence, RI
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Posted: Fri Jul 29, 2011 8:44 am Post subject:
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Thanks!
Do you make archtops?
That's a piece from a longer ebony board that has been providing me with accent pieces for years. I'm going to be sad when I have to buy some more, it's so damn expensive these days.
Cocobolo used to be my favorite wood until I developed a skin allergy to it. Now I use it very sparingly, wearing long pants, socks and long-sleeve shirt, and immediately shower when I'm done surfacing/dimensioning it. Below is a jewelry box/table I made for my mom. The legs are cocobolo, the boxes zebrawood.
_________________ MFOS Ultimate Expand-o-tron Build Log: http://www.electro-music.com/forum/post-308797.html#308797
MFOS Mini-Controller Build Log [FINISHED!]: http://www.electro-music.com/forum/topic-42968.html |
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Skrog Productions
Joined: Jan 07, 2009 Posts: 1196 Location: Scottish Borders
Audio files: 155
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Posted: Sat Jul 30, 2011 8:38 am Post subject:
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Great work with the populating , and nice carpentry skills as well
I look forward to see how the synth Seq develops.
Dave. |
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diablojoy
Joined: Sep 07, 2008 Posts: 809 Location: melbourne australia
Audio files: 11
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Posted: Sun Jul 31, 2011 2:11 am Post subject:
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Quote: | Do you make archtops? |
any true hollow body archtops = nightmare challenge
alas i fear my skill level would be inadequate to do them
any justice , maybe one day i might try.
there was a local guy who ran courses Carson Crickmore. his archtops would have to be some of the best i have ever seen don't know if he's still going now though. really wish i could have done those courses but at the time I had other priorities .
Quote: | Cocobolo used to be my favorite wood until I developed a skin allergy to it. |
thats a real bummer , surprising you are ok with ebony then it started to give me nose bleeds now i have to use a full mask for sanding.
dust extraction isn't enough |
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